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  • 13. Climate action
  • 11. Sustainability
  • Finnish

  • image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    Authors: Ronkainen, Sami;

    Tämän työn tarkoituksena on tarkastella tulevaisuuden kehitysnäkymien vaikutusta Vaasan kaukolämpötoimintaan. Komartekin Flowra 32 verkostolaskentaohjelman avulla tutkitaan kaukolämpöverkon siirtokykyä nykyisissä ja tulevaisuuden kuormitustilanteissa. Työn yhteydessä laaditaan kaukolämmityksen kasvuennuste seuraavalle kymmenelle vuodelle ja selvitetään mitoituslämpötilaa -29°C vastaava teho tilastollisen analyysin avulla. Lisäksi tutkitaan mahdollisia ratkaisuja huippu- ja varatehon tuottamiseksi. Tarkastelun kohteena on myös lämmön lyhytaikaisvarastoinnin kannattavuus energianhankintajärjestelmässä. Kaukolämpöverkon siirtokyky on tarkastelun perusteella kohtalaisen hyvä, mutta liittymistehojen kasvaessa paine-erot verkon häntäpäässä jäävät liian alhaisiksi. Paras ratkaisu paine-ero ongelmaan on rakentaa välipumppaamo Hovioikeudenpuistoon. Tarkastelun perusteella kaukolämmön varatehon lisätarve on kymmenen vuoden kuluttua noin 40 MW ja varatehoksi on kannattavinta rakentaa raskasta polttoöljyä käyttävä lämpökeskus. Lämmön lyhytaikaisvarastointi on nykyisillä energianhinnoilla kohtalaisen kannattavaa varsinkin, jos Kauppa- ja teollisuusministeriö myöntää hankkeelle täyden 30%:n investointiavustuksen. The purpose of this thesis is to examine the effects of future prospects on district heating in the town of Vaasa. Using Komartek`s Flowra 32 network computation software application, the transfer capacity of the district heating network is studied in current and future load situations. A growth forecast for the next ten years is prepared in connection with this thesis and the power that corresponds to a dimensioning temperature of -29°C obtained using statistical analysis. In addition, possible solutions for generating peak and back-up power are examined. The economic viability of the short-term heat storage in the energy purchasing system is also focus of the study. On the basis of the analysis, the transfer capacity of the district heat network is rather good, although as the connection power increases, pressure differences at the end of the network remain too low. The best solution for the pressure difference problem is to construct a booster pumping station in Hovioikeudenpuisto. The analysis showed that after ten years, the need for back-up district heating energy will be 40 MW and the most economically viable way of providing back-up energy will be to build a heating centre that runs on heavy fuel oil. At current energy prices, the short-term heat storage is economically viable, especially if the Ministry of Trade and Industry grants the project 30% of its value in the form of investment support.

    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao LUTPubarrow_drop_down
    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    LUTPub
    2002
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      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao LUTPubarrow_drop_down
      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
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      2002
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  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: Martikainen, Antti;

    Tässä diplomityössä tutkittiin ilmastonmuutoksen vaikutusta sähköverkkoliiketoimintaan. Ilmastonmuutosennusteet laadittiin RCAOilmastomallin antamien laskelmien perusteella. Ilmastomuuttujien ennusteet tehtiin ajanjaksolle 2016 - 2045 ja ennusteiden vertailujaksona käytettiin ajanjaksoa 1960 - 1990. Ennusteet laadittiin sadannalle, lämpötilalle, kuuraantumiselle, huurteelle, ukkoselle, routaantumiselle ja tuulisuudelle. Ilmastomuuttujien vaikutukset arvioitiin sekä tekniseltä että taloudelliselta kannalta. Ilmastonmuutoksen myötä on odotettavissa, että ilmastomuuttujien aiheuttamat rasitukset verkkoliiketoimintaa kohtaan tulevat olemaan niistä saatuja hyötyjä suuremmat. Vikamäärien kasvu on merkittävin ja haastavin ilmastonmuutoksen aiheuttama haitta. Ukkonen, lumikuormat ja tuuli tulevat aiheuttamaan nykyistä enemmän vikoja erityisesti keskijänniteverkoissa avojohdoille ellei verkkoja kehitetä vikavarmemmiksi. Lämpötilan nousun seurauksena lämmitystarve laskee ja jäähdytystarve nousee. Tämä näkyy merkittävimmin voimakkaasti lämpötilariippuvaisten käyttäjäryhmien sähkönkulutuksessa ja huippukuormissa. In this paper the effect of climate change on electricity network business is presented. The results are based on RCAO climate model scenarios. The climate predictions were composed to the period 2016 - 2045. The period 1960 - 1990 was used as a control period. The climate predictions were composed for precipitation, temperature, hoarfrost, thunder, ground frost and wind. The effects of the change of the climate variables on electricity network business were estimated from technical and economical points of view. The estimationwas based on the change predictions of the climate variables. It is expected that the climate change will cause more damages than benefits on electrical network business. The increase of the number of network fault will be the most important and demanding disadvantage caused by the climate change. If networks are not developed more resistant for faults, thunder, heavy snow and wind will cause more damages especially to overhead lines in medium voltage network. As a consequence of increasing temperature the demand of heating energy will decrease and the demand of cooling energy will increase. This is significant for the electricity consumption and the peak load of temperaturedependent electricity users.

    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ LUTPubarrow_drop_down
    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    LUTPub
    2005
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      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ LUTPubarrow_drop_down
      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
      LUTPub
      2005
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  • image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    Authors: Puupponen, Tero;

    Työn tavoitteena oli luoda menetelmä leijukerroskattilan petin lämpötilojen ja toiminta-alueen arvioimiseksi annetuilla lähtötiedoilla. Toimintatapana oli tutkia polttoaineen ominaisuuksien ja kattilan geometrian vaikutuksia petin energiataseeseen ja tätä kautta petin lämpötilaan kattilan ajotapa huomioiden. Työn teoriaosassa esitellään aluksi biopolttoaineiden ominaisuuksia ja leijukerroskattilan toimintaa petin toimintaympäristön selvittämiseksi. Teoriaosan lopussa käsitellään perusteellisesti petin hydrodynamiikkaa ja reaktiokinettikkaa sekä petin alueen mekaanista mitoitusta. Lisäksi polttoaineen syöttötapa ja palaminen petissä tuodaan esille. Tutkimusosassa selvitetään petin energiatasemallin määrittämistä teoriaan ja diplomityön aikana eri kattiloilla suoritettuihin mittauksiin perustuen. Mittauksista on erillinen selvitys seitsemännessä kappaleessa. Lopuksi kuvaillaan petin energiatasetta mallintavan menetelmän toimintaa sekä siihen syötettäviä lähtötietoja. Tuloksena on saatu suppealla alueella toimiva laajennettavissa oleva petin energiataseen malli. Menetelmän testaamiseen käytetään mittaustietoa kahdelta kattilalta, joita ei olla käytetty petin energiatasemallin virityksessä. The purpose of this study was to create a method to estimate bed temperatures and thereby the range of action of the bubbling fluidized bed. The development is based on the effects of the fuel properties and boiler's geometry to bed's energy balance and and thus bed temperature. Also, boiler's operational conditions were involved with the development of the method. Biofuel's properties and the combustion conditions in the BFB boiler are de-scribed at the beginning of the theory part. This has to be done in order to figure out the operational conditions of the bubbling fluidized bed. In the latter part reaction kinetics and hydrodynamics of the bed and also the mechanical dimensioning of bed area are described. In addition, fuel feeding procedure and the combustion of fuel in the bubbling fluidized bed are introduced. In the research part the energy balance of bed on the basis of theory and measurements is defined. There is account of the measurements in the seventh part of the study. Finally, procedure of the model is presented with the input data, which is needed for proper function of the model. As a result, a model of the energy balance of the bubbling fluidized bed has been created. The area of operation of the model is not wide, but it can be expanded in the further development. Process data from two different boilers is used for testing the model. The process data from these boilers were not used when the model was created.

    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao LUTPubarrow_drop_down
    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    LUTPub
    2001
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      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao LUTPubarrow_drop_down
      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
      LUTPub
      2001
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  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: Aaltonen, Jenni;

    Tämän diplomityön tarkoituksena on selvittää Suomen poliittisten päättäjien sekä heidän sidosryhmien mielipiteitä energiatehokkuuden lisäämisestä erityisesti yritysten näkökulmasta. Tämän lisäksi työssä selvitetään poliittisten päättäjien tärkeimpiä sidosryhmiä energiapoliittisia asioita käsiteltäessä. Tutkimuksen teoriaosassa keskitytään energiatehokkuuden kehittymiseen, energiatehokkuuden hyötyihin, keinoihin energiatehokkuuden edistämiseksi sekä uusimpiin energiatehokkuutta koskeviin strategioihin, lainsäädäntöihin ja sopimuksiin. Tutkimusaineisto kerätään laadullisella ja määrällisellä tutkimusmenetelmällä. Tarvittavan informaation saamiseksi suoritetaan eduskunnan talous-, tulevaisuus- ja ympäristövaliokunnalle kysely, joka toteutetaan Internetin välityksellä. Sidosryhmiltä tieto kerätään haastatteluilla. Tutkimustuloksien mukaan energiatehokkuuteen ei ole panostettu tarpeeksi Suomessa ja se on yksi keskeisimmistä keinoista torjua ilmastonmuutos. Yleisesti ottaen asenteet energiatehokkuuden lisäämiseksi ovat selvästi parantuneet viimevuosien aikana. Tärkeimmäksi sidosryhmäksi nousi selkeästi Työ- ja elinkeinoministeriö, mutta myös Energiateollisuus ry sekä kansalais- ja ympäristöjärjestöt koettiin tärkeiksi. The purpose of this Master’s thesis is to find out Finnish political decision-makers and their interest groups opinions of energy efficiency especially from companies’ point of view. This work also determines political decision-makers most importants interest groups when discussing about energy politics. The theory part in this thesis focus on improving energy efficiency, benefits of energy efficiency, resorts to improve energy efficiency and the newest strategies, laws and contracts that aim to improve energy efficiency. Research data is gathered with qualitative and quantitative research methods. This thesis performs a questioning to parliaments economy-, future- and environment committee to gather the information. The questioning is conducted through Internet. Interest groups opinions are collected with an interview. Research result reveals that in Finland hasn’t been invested enough for energy efficiency and that energy efficiency is an important way to reject climate change. Political decision-makers attitudes for improving energy efficiency have gotten better during last years. The most important political decision-makers are Ministry of Employment and the Economy, but also Finnish Energy Industries and civil and environmental organizations.

    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ LUTPubarrow_drop_down
    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    LUTPub
    2009
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      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ LUTPubarrow_drop_down
      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
      LUTPub
      2009
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  • image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    Authors: Hansson, Henri;

    Diplomityössä tarkasteltiin lentoaseman terminaalirakennuksen energia- ja ainevirtoja sekä sisäilman ominaisuuksia. Esimerkkikohteena oli Helsinki-Vantaan lentoaseman keskiterminaalirakennus, jonka 1. ja 2. rakennusvaiheen ulkovaippa muodosti taserajan. Taseen ulkopuolisista tekijöistä tarkasteltiin jäähdytysenergian tuotantoa ja ulkoilman laatua. Työn yhtenä tavoitteena oli muodostaa rakennukselle energiatase. Taseen avulla saatiin tietoa energian jakautumisesta eri toimintoihin ja löydettiin tekijät, joita suunnittelussa tulee painottaa. Terminaalin lähiympäristössä tutkittiin ulkoilman laatua mittausten avulla. Mittaustietoja käytetään apuna tulevaisuuden ilmanottosuunnittelussa. Työssä tarkasteltiin energia- ja ainevirtoina lämpö-, jäähdytys- ja sähköenergian sekä veden ostoa, tuotantoa ja kulutusta sekä prosessointia. Terminaalin lämpötarpeesta hieman yli puolet katettiin kaukolämmöllä. Loput noin 45 % lämpöenergiasta saatiin ns. ilmaisenergioista. Näistä merkittävimmäksi havaittiin sähkölaitteiden luovuttama lämpömäärä. Lämpöhäviöiden kannalta merkittäviä energiavirtoja olivat ilmanvaihdon ja vuotoilmojen kautta siirtyvät energiavirrat, joiden osuuden todettiin olevan noin 80 % terminaalin kokonaislämpöhäviöistä. Vaipan lämmöneristyskyky ja kyky absorboida auringon säteilyä todettiin hyviksi. Tulevaisuudessa tärkeitä suunnittelunäkökohtia tulevat olemaan ilmanvaihdon ja vuotoilman kautta siirtyvien energiavirtojen hallinta sekä sähköenergian ominaiskulutuksen pienentäminen. Ulkoilma todettiin mittauksin hyvätasoiseksi. Lento- ja maaliikenteen päästöarvot olivat lähellä toisiaan ja selvästi ohjearvoja alemmalla tasolla. Päästöjen sijaintiin vaikuttivat liikennemääriä enemmän tuuliolosuhteet. Tulevaisuudessa tuloilma voidaan johtaa terminaaliin yhtä hyvin joko lento- tai maaliikenteen puolelta. The aim of this study was to examine energy flows, material flows and indoor climate in an airport terminal building. The middle terminal building at Helsinki-Vantaa airport was used as an example object in the study. The exterior surface of the first and the second phases in the terminal building formed an energy balance border of the study. Cooling system and quality of open air were examined as exterior factors of the balance border. The object of this study was to create an energy balance for the terminal building. With the help of the formed energy balance has gotten information about distribution of energy flows into different functions and about factors which should be emphasized in planning. The quality of open air was measured in the surroundings of the terminal building. The results of the measurements will be used in ventilation planning. In this study heating, cooling, electric energy and water flows were examined from the perspectives of buying, producing, distributing and consuming these energy and material flows. Over 50 % of the heating needed in the terminal building was supplied by district heating. The rest of the heating need was covered by so called free energy. The most noticeable of these free energy forms was the heating energy submitted by electrical devices. From the aspect of thermal losses, ventilation and leak air were the most notable energy flows. Their amount of the total thermal losses in the terminal building was found to be about 80 %. Facade’s heat insulation and ability to absorb radiation from the sun were found to be good. In the future, control of energy flows in ventilation and leak air will be important designing aspects. Reduction of the specific consumption in electric energy is also worthy of consideration. The quality of open air was measured to be good. The quantities of emissions both in air traffic and land traffic sides were found to be close to each other and clearly below the guide lines. Wind conditions were observed to affect more to the location of emissions than the amount or quality of traffic in the airport area. In the future incoming air can be taken as well either from the air traffic side or from the land traffic side of the terminal building.

    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao LUTPubarrow_drop_down
    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
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    2001
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      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao LUTPubarrow_drop_down
      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
      LUTPub
      2001
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  • image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    Authors: Mehto, Maija;

    EU:n päästökaupan ensimmäinen jakso alkoi 1.1.2005. Päästökauppa on aiheuttanut sen piiriin kuuluvalle teollisuudelle monia haasteita ja riskejä kasvavien kustannusten muodossa. Massa- ja paperiteollisuus on päästökaupanpiiriin kuuluva teollisuudenala, johon päästökaupan kustannukset vaikuttavat haitallisesti globaalin hinnoittelun vuoksi. Massa- ja paperiteollisuudelle päästökaupasta voi koitua kustannuksia päästöoikeuksien ostamisesta, sähkön, polttoaineiden ja kemikaalien hinnan noususta sekä raaka-ainehuollon vaikeutumisesta. Toisaalta tehtaat voivat hyötyä päästökaupasta alittaessaan päästöoikeutensa tai myydessään sähköä ulkopuoliseen verkkoon. Massa- ja paperiteollisuudessa sähköä kuluu enimmäkseen pumppauksiin eli massan siirtoon ja mekaanisen massan valmistukseen. Suurimpia sähköenergian kuluttajia sellun valmistuksessa ovat soodakattila, puunkäsittely, valkaisu ja lajittelu. Lämpöä tarvitaan haihdutus-, kuivaus- ja keittoprosesseissa. Kemikaaleista klooridioksidin valmistuksessa käytettävä natriumkloraatti on kustannusten kannalta merkittävin kemikaali. Tässä työssä tutkittiin päästökaupan aiheuttamien kustannusten vähentämismahdollisuuksia kohdetehtaalla. Suurin potentiaali liittyy meesauunissa poltettavan maakaasun korvaamiseen mäntyöljyllä tai biomassan kaasutuskaasulla. Kemikaalikulutuksen osalta happidelignifiointi on merkittävin mahdollisuuskustannusten alentamiseksi. Lisäksi päästökaupan kustannuksia voidaan alentaa muun muassa oikealla mitoituksella ja sekundäärilämpöjen optimaalisella käytöllä. The first period of EU's emission trading scheme started 1.1.2005. Since then industries subjected to emission trading have faced many challenges and risks in the form of increasing costs. The pulp and paper industry is a part of emission trading scheme to which the costs associated with emission trading could have a negative effect due to global pricing ofit's products. The pulp and paper industry may face the costs of purchasing emission allowances, the increase in the prices of electricity, fuels and chemicalsand the negative effects on raw material deliveries. On the other hand mills may benefit from emission trading if they can go under their allowances or sell electricity outside the mill. In the pulp and paper industry electricity is consumed mostly by pumping and thus conveying materials and for the manufacture of mechanical pulp. The major electricity consumers in pulp mills are recovery boilers, wood handling, bleaching and screening operations. Heat isconsumed in evaporation, drying and cooking processes. Sodium chlorate used in the manufacture of chlorine dioxide is the most significant chemical when considering the costs of emission trading. In this thesis the possibilities to reduce the costs of emission trading were examined. The greatest potential to reduce these costs is to replace the natural gas burned in lime kilns for tall oil or biomass gasification gas. Chemical consumption can be significantly reduced with oxygen delignification. In addition the costs can be reduced byproper sizing of equipment and optimal utilization of secondary heat sources.

    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao LUTPubarrow_drop_down
    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
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    2006
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      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao LUTPubarrow_drop_down
      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
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      2006
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  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: Rantala, Olavi;

    This paper describes the main features of a model developed for fore-casting economic developments, energy demand and greenhouse gas emissions in the EU area and Finland as well as for simulating the economic impacts of EU climate policy. Climate policy analysis necessitates a model of the whole EU area, because CO2 emissions of the EU area emission trading sector determine the demand and price of emission allowances. The main conclusion from model simulations is that output and employment losses induced by EU climate policy in 2008-2012 will be more se-vere in a small open energy intensive economy like Finland than in the rest of the EU area. The negative impacts of EU climate policy on export competitiveness, exports and output volume in Finland will be strongest in the energy intensive industrial sec-tors which belong to the EU emission trading sector.

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    EconStor
    Research . 2008
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      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ EconStorarrow_drop_down
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      EconStor
      Research . 2008
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  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: Vinokurov, Mihail; Hammo, Simo; Hupponen, Mari; Luoranen, Mika;

    Hanke tähtää Lappeenrannan julkisen rakennuskannan energiatehokkuuden ja kokonaistaloudellisuuden parantamiseen. Energiatehokkuutta ja kokonaistaloudellisuutta kunnallisessa rakentamisessa kannustavat mm. kansainvälisten ja kansallisten sopimusten energiansäästötavoitteet, sekä kuntien tiukka budjettitilanne. Hankkeen yhteydessä on laadittu arviointikriteeristö rakennusinvestoinneista vastaavien viranomaisten käyttöön, mikä helpottaa tunnistamaan energiatehokkaita, kokonaistaloudellisia sekä laadukasta sisäilmastoa tukevia rakennusinvestointien toteutuskäytäntöjä. Kriteeristö on suunniteltu erityisesti kasvatus- ja opetustarkoituksiin suunnattuja rakennuksia varten. Jotta kokonaistaloudellisuustavoitteet täyttyisivät, työssä käytettiin hyväksi elinkaariajattelutapaa. Kriteerit laadittiin rakennuksen kolmelle tavoitteiden toteutumisen kannalta merkittävälle elinkaaren vaiheelle, eli suunnittelu-, toteutus- ja käyttövaiheelle. Kriteeristö on laadittu kirjallisuuden ja ammattilaisten haastattelujen tarjoaman tiedon pohjalta. Laadittua kriteeristöä koekäytettiin Myllymäen päiväkoti -hankkeen yhteydessä, jotta voitaisiin tunnistaa kriteeristön kehitystarpeita. Koekäytön yhteydessä toteutettiin myös mielipidekysely, jonka avulla kerättiin kriteeristön kehitysehdotuksia rakennushankkeen eri osapuolilta. Koekäytön tarjoaman tiedon nojalla kriteeristöä jatkokehitettiin vastaamaan paremmin käytännön tarpeita. Koekäyttö kohdistui kohteen suunnitteluvaiheeseen. Hankkeessa saavutettiin asetetut tavoitteet. Voidaan kuitenkin todeta, että kriteeristön jatkokehittämistä on syytä jatkaa. Koekäytön ulottaminen toteutus ja käyttövaiheeseen on tärkeää. Kriteeristön käsittelyalueen laajentamiselle korjausrakentamiseen sekä alueellisen tarkastelutavan käyttöönotolle olisi myös tarvetta. The aim of this project is the creation of a tool to improve the energy efficiency, overall economy and indoor climate quality in the public building stock of Lappeenranta. The motivation to improve the energy and cost efficiency in public buildings related to inter alia the energy saving targets set by international and national agreements and the economic challenges of municipalities. In the frames of this project, a set of evaluation criteria was created to help the officials responsible for building investments to identify methods for the implementation of new construction projects that promote energy and cost efficiency as well as indoor climate quality. The primary targets of the criteria are educational buildings. Life-cycle approach was used in this work in terms to ensure overall economy targets. The criteria were created for three phases of buildings’ life-cycle that were identified to be important from the perspective of the set targets. These phases were the design phase, construction phase and operational phase. The creation of criteria was based on the information gained from literature, interviews of professionals and the trial phase of criteria. In terms to identify the functionality of criteria, they were exposed for trial at the building project of Myllymäki kindergarten in Lappeenranta. The trial focused on the design phase of the object. In addition, the survey was conducted in terms to receive feedback and development proposals on the criteria from different parties of the building project. By using the new experience gained from the trial phase, the criteria were further developed. The targets set for this projects were met. However, it should be mentioned that there is a need to continue the further development of the criteria in the future. In addition to the design phase, it is important to extend the trial to the construction and operational phases. The extension of the scope of criteria to renovation projects and the implementation of a regional approach would also be important development steps. Loppuraportti

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    LUTPub
    2014
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      2014
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  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: Arposalo, Ari; Liedes, Matti;

    This research is part of a TRAKET-project which concentrates on the competitiveness of the transit routes to North-West Russia. This research report analyses the environmental and traffic safety effects of the transit traffic and the changes in their external cost effects as the traffic increases. Recommendations for the improvement of the environmental effects and the traffic accident rates are given in the report. In addition, measures to the development of new service concepts for the operators in transit traffic are presented. Tämätutkimus on osa TRAKET -hanketta, jossa keskitytään Luoteis-Venäjälle vievien transitoreittien kilpailukyvyn selvittämiseen. Tässä osatutkimuksessa tarkastellaan Suomen kautta kulkevan transitoliikenteen ympäristövaikutuksia ja turvallisuusnäkökohtia sekä niiden aiheuttamien kustannusten muuttumista liikennemäärän kasvaessa. Raportissa annetaan kehityssuosituksia ympäristö- ja onnettomuustilanteen parantamiseksi. Lisäksi tutkimuksessa esitetään uusien, transitoliikenteen osapuolille tarkoitettujen, lisäpalvelujen synnyttämiseen tarvittavia toimia.

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    LUTPub
    2007
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      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ LUTPubarrow_drop_down
      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
      LUTPub
      2007
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  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: Kärkkäinen, Petteri;

    Uusiutuvan energian osuutta maailman energiantuotannossa halutaan kasvattaa, ja yksi sopiva energialähde on tuulienergia. Tuuliturbiinien rakentaminen on Suomessa ollut kasvussa, mikä tarkoittaa, että turbiineja rakennetaan entistä enemmän sisämaahan metsäiseen maastoon. Tämä tuo haasteita turbiinien rakentamiselle ja valinnalle sekä tuotannon optimoinnille. Metsäinen maasto, tai mikä tahansa virtauksien tielle osuva este, hidastaa tuulen nopeutta ja aiheuttaa tuuleen turbulenssia. Tässä työssä analysoidaan metsäisessä maastossa mitatusta tuulidatasta tuuligradientin ja tuulen turbulenssin jaksottaisuutta ja tilastollisuutta. Turbulenssin osalta käytetään turbulenssin intensiteettiä. Jaksottaisuutta tarkastellaan vuorokauden ja vuodenajan mukaan. Tutkimusaineistona toimii Lappeenrannassa TuuliMuukon tuulipuistossa LiDAR-tutkalla (Light Detection And Ranging) mitattu tuulidata. Datan analysointiin käytetään Matlab-ohjelmaa. Analysoinnissa havaittiin tuuligradientilla ja turbulenssin intensiteetillä olevan vuorokausijaksottaisuutta. Tuuligradientti vaihtelee vuorokauden aikana siten, että se on pienempää päivän aikana ja suurempaa yön aikana. Turbulenssin intensiteetti vaihtelee päinvastaisesti. Tilastollisesti suurin osa tuuligradientin eksponenttiarvon arvoista on välillä 0,2-0,6. Tuuligradientin potenssiarvo vaihtelee vuodenajan mukaan hieman, ja pienimpänä potenssiarvo on lämpiminä kuukausina kuten toukokuussa. Graafisen tarkastelun perusteella tuuligradientti poikkeaa selvästi standardin mukaisesta arvosta ainakin maaliskuussa. Turbulenssin intensiteetin arvot jakautuvat välille 0,02-0,2, joista suurin osa on välillä 0,10-0,16. Turbulenssin intensiteetin jakaumien perusteella tuuliolosuhteet näyttävät olevan standardien mukaisia, pois lukien tarkastelluista kuukausista syyskuun jakauman, joka poikkesi standardin mukaisesta. There is a need to increase the share of renewable energy in the world’s energy production and one suitable energy source is wind energy. The construction of wind turbines in Finland has been growing, which means that the turbines are built more and more inland where the terrain is forested. This brings challenges for the construction, selection and optimization of production of the wind turbines. Forested terrain, or any other obstacle, slows down the wind and causes turbulence to the wind. This bachelor’s thesis analyzes the wind conditions’, wind shear and turbulence, periodicity and statisticality from wind data that has been measured in forested area. Turbulence intensity is chosen to represent turbulence. Periodicity is viewed from the point of diurnal and seasonal variation. The research material used is wind data measured in Lappeenranta in TuuliMuukko wind farm with a LiDAR-radar (Light Detection and Ranging). Matlab-software is used to analyze the data. The wind shear and turbulence intensity were observed to have periodicity in diurnal time interval. The wind shear varies such as it is smaller during day and bigger during night. The turbulence intensity varies the other way around. Statistically the biggest share of the wind shear exponent’s values are between 0.2 and 0.6. The wind shear exponent varies a little by the season and the smallest it is during the warmest months like in May. Based on graphical review, the wind shear diverges clearly from the standard value at least during March. The values of turbulence intensity divide between 0.02 and 0.2, and the greater part are between 0.10 and 0.16. Based on the distribution of the turbulence intensity, the wind conditions look to be in accordance with standards, excluding September’s distribution which diverged from the standard values.

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    LUTPub
    2018
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      2018
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  • image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    Authors: Ronkainen, Sami;

    Tämän työn tarkoituksena on tarkastella tulevaisuuden kehitysnäkymien vaikutusta Vaasan kaukolämpötoimintaan. Komartekin Flowra 32 verkostolaskentaohjelman avulla tutkitaan kaukolämpöverkon siirtokykyä nykyisissä ja tulevaisuuden kuormitustilanteissa. Työn yhteydessä laaditaan kaukolämmityksen kasvuennuste seuraavalle kymmenelle vuodelle ja selvitetään mitoituslämpötilaa -29°C vastaava teho tilastollisen analyysin avulla. Lisäksi tutkitaan mahdollisia ratkaisuja huippu- ja varatehon tuottamiseksi. Tarkastelun kohteena on myös lämmön lyhytaikaisvarastoinnin kannattavuus energianhankintajärjestelmässä. Kaukolämpöverkon siirtokyky on tarkastelun perusteella kohtalaisen hyvä, mutta liittymistehojen kasvaessa paine-erot verkon häntäpäässä jäävät liian alhaisiksi. Paras ratkaisu paine-ero ongelmaan on rakentaa välipumppaamo Hovioikeudenpuistoon. Tarkastelun perusteella kaukolämmön varatehon lisätarve on kymmenen vuoden kuluttua noin 40 MW ja varatehoksi on kannattavinta rakentaa raskasta polttoöljyä käyttävä lämpökeskus. Lämmön lyhytaikaisvarastointi on nykyisillä energianhinnoilla kohtalaisen kannattavaa varsinkin, jos Kauppa- ja teollisuusministeriö myöntää hankkeelle täyden 30%:n investointiavustuksen. The purpose of this thesis is to examine the effects of future prospects on district heating in the town of Vaasa. Using Komartek`s Flowra 32 network computation software application, the transfer capacity of the district heating network is studied in current and future load situations. A growth forecast for the next ten years is prepared in connection with this thesis and the power that corresponds to a dimensioning temperature of -29°C obtained using statistical analysis. In addition, possible solutions for generating peak and back-up power are examined. The economic viability of the short-term heat storage in the energy purchasing system is also focus of the study. On the basis of the analysis, the transfer capacity of the district heat network is rather good, although as the connection power increases, pressure differences at the end of the network remain too low. The best solution for the pressure difference problem is to construct a booster pumping station in Hovioikeudenpuisto. The analysis showed that after ten years, the need for back-up district heating energy will be 40 MW and the most economically viable way of providing back-up energy will be to build a heating centre that runs on heavy fuel oil. At current energy prices, the short-term heat storage is economically viable, especially if the Ministry of Trade and Industry grants the project 30% of its value in the form of investment support.

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    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
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    2002
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      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
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      2002
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    Authors: Martikainen, Antti;

    Tässä diplomityössä tutkittiin ilmastonmuutoksen vaikutusta sähköverkkoliiketoimintaan. Ilmastonmuutosennusteet laadittiin RCAOilmastomallin antamien laskelmien perusteella. Ilmastomuuttujien ennusteet tehtiin ajanjaksolle 2016 - 2045 ja ennusteiden vertailujaksona käytettiin ajanjaksoa 1960 - 1990. Ennusteet laadittiin sadannalle, lämpötilalle, kuuraantumiselle, huurteelle, ukkoselle, routaantumiselle ja tuulisuudelle. Ilmastomuuttujien vaikutukset arvioitiin sekä tekniseltä että taloudelliselta kannalta. Ilmastonmuutoksen myötä on odotettavissa, että ilmastomuuttujien aiheuttamat rasitukset verkkoliiketoimintaa kohtaan tulevat olemaan niistä saatuja hyötyjä suuremmat. Vikamäärien kasvu on merkittävin ja haastavin ilmastonmuutoksen aiheuttama haitta. Ukkonen, lumikuormat ja tuuli tulevat aiheuttamaan nykyistä enemmän vikoja erityisesti keskijänniteverkoissa avojohdoille ellei verkkoja kehitetä vikavarmemmiksi. Lämpötilan nousun seurauksena lämmitystarve laskee ja jäähdytystarve nousee. Tämä näkyy merkittävimmin voimakkaasti lämpötilariippuvaisten käyttäjäryhmien sähkönkulutuksessa ja huippukuormissa. In this paper the effect of climate change on electricity network business is presented. The results are based on RCAO climate model scenarios. The climate predictions were composed to the period 2016 - 2045. The period 1960 - 1990 was used as a control period. The climate predictions were composed for precipitation, temperature, hoarfrost, thunder, ground frost and wind. The effects of the change of the climate variables on electricity network business were estimated from technical and economical points of view. The estimationwas based on the change predictions of the climate variables. It is expected that the climate change will cause more damages than benefits on electrical network business. The increase of the number of network fault will be the most important and demanding disadvantage caused by the climate change. If networks are not developed more resistant for faults, thunder, heavy snow and wind will cause more damages especially to overhead lines in medium voltage network. As a consequence of increasing temperature the demand of heating energy will decrease and the demand of cooling energy will increase. This is significant for the electricity consumption and the peak load of temperaturedependent electricity users.

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    2005
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      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
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      2005
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  • image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    Authors: Puupponen, Tero;

    Työn tavoitteena oli luoda menetelmä leijukerroskattilan petin lämpötilojen ja toiminta-alueen arvioimiseksi annetuilla lähtötiedoilla. Toimintatapana oli tutkia polttoaineen ominaisuuksien ja kattilan geometrian vaikutuksia petin energiataseeseen ja tätä kautta petin lämpötilaan kattilan ajotapa huomioiden. Työn teoriaosassa esitellään aluksi biopolttoaineiden ominaisuuksia ja leijukerroskattilan toimintaa petin toimintaympäristön selvittämiseksi. Teoriaosan lopussa käsitellään perusteellisesti petin hydrodynamiikkaa ja reaktiokinettikkaa sekä petin alueen mekaanista mitoitusta. Lisäksi polttoaineen syöttötapa ja palaminen petissä tuodaan esille. Tutkimusosassa selvitetään petin energiatasemallin määrittämistä teoriaan ja diplomityön aikana eri kattiloilla suoritettuihin mittauksiin perustuen. Mittauksista on erillinen selvitys seitsemännessä kappaleessa. Lopuksi kuvaillaan petin energiatasetta mallintavan menetelmän toimintaa sekä siihen syötettäviä lähtötietoja. Tuloksena on saatu suppealla alueella toimiva laajennettavissa oleva petin energiataseen malli. Menetelmän testaamiseen käytetään mittaustietoa kahdelta kattilalta, joita ei olla käytetty petin energiatasemallin virityksessä. The purpose of this study was to create a method to estimate bed temperatures and thereby the range of action of the bubbling fluidized bed. The development is based on the effects of the fuel properties and boiler's geometry to bed's energy balance and and thus bed temperature. Also, boiler's operational conditions were involved with the development of the method. Biofuel's properties and the combustion conditions in the BFB boiler are de-scribed at the beginning of the theory part. This has to be done in order to figure out the operational conditions of the bubbling fluidized bed. In the latter part reaction kinetics and hydrodynamics of the bed and also the mechanical dimensioning of bed area are described. In addition, fuel feeding procedure and the combustion of fuel in the bubbling fluidized bed are introduced. In the research part the energy balance of bed on the basis of theory and measurements is defined. There is account of the measurements in the seventh part of the study. Finally, procedure of the model is presented with the input data, which is needed for proper function of the model. As a result, a model of the energy balance of the bubbling fluidized bed has been created. The area of operation of the model is not wide, but it can be expanded in the further development. Process data from two different boilers is used for testing the model. The process data from these boilers were not used when the model was created.

    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao LUTPubarrow_drop_down
    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    LUTPub
    2001
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      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao LUTPubarrow_drop_down
      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
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      2001
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  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: Aaltonen, Jenni;

    Tämän diplomityön tarkoituksena on selvittää Suomen poliittisten päättäjien sekä heidän sidosryhmien mielipiteitä energiatehokkuuden lisäämisestä erityisesti yritysten näkökulmasta. Tämän lisäksi työssä selvitetään poliittisten päättäjien tärkeimpiä sidosryhmiä energiapoliittisia asioita käsiteltäessä. Tutkimuksen teoriaosassa keskitytään energiatehokkuuden kehittymiseen, energiatehokkuuden hyötyihin, keinoihin energiatehokkuuden edistämiseksi sekä uusimpiin energiatehokkuutta koskeviin strategioihin, lainsäädäntöihin ja sopimuksiin. Tutkimusaineisto kerätään laadullisella ja määrällisellä tutkimusmenetelmällä. Tarvittavan informaation saamiseksi suoritetaan eduskunnan talous-, tulevaisuus- ja ympäristövaliokunnalle kysely, joka toteutetaan Internetin välityksellä. Sidosryhmiltä tieto kerätään haastatteluilla. Tutkimustuloksien mukaan energiatehokkuuteen ei ole panostettu tarpeeksi Suomessa ja se on yksi keskeisimmistä keinoista torjua ilmastonmuutos. Yleisesti ottaen asenteet energiatehokkuuden lisäämiseksi ovat selvästi parantuneet viimevuosien aikana. Tärkeimmäksi sidosryhmäksi nousi selkeästi Työ- ja elinkeinoministeriö, mutta myös Energiateollisuus ry sekä kansalais- ja ympäristöjärjestöt koettiin tärkeiksi. The purpose of this Master’s thesis is to find out Finnish political decision-makers and their interest groups opinions of energy efficiency especially from companies’ point of view. This work also determines political decision-makers most importants interest groups when discussing about energy politics. The theory part in this thesis focus on improving energy efficiency, benefits of energy efficiency, resorts to improve energy efficiency and the newest strategies, laws and contracts that aim to improve energy efficiency. Research data is gathered with qualitative and quantitative research methods. This thesis performs a questioning to parliaments economy-, future- and environment committee to gather the information. The questioning is conducted through Internet. Interest groups opinions are collected with an interview. Research result reveals that in Finland hasn’t been invested enough for energy efficiency and that energy efficiency is an important way to reject climate change. Political decision-makers attitudes for improving energy efficiency have gotten better during last years. The most important political decision-makers are Ministry of Employment and the Economy, but also Finnish Energy Industries and civil and environmental organizations.

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    LUTPub
    2009
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      2009
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  • image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    Authors: Hansson, Henri;

    Diplomityössä tarkasteltiin lentoaseman terminaalirakennuksen energia- ja ainevirtoja sekä sisäilman ominaisuuksia. Esimerkkikohteena oli Helsinki-Vantaan lentoaseman keskiterminaalirakennus, jonka 1. ja 2. rakennusvaiheen ulkovaippa muodosti taserajan. Taseen ulkopuolisista tekijöistä tarkasteltiin jäähdytysenergian tuotantoa ja ulkoilman laatua. Työn yhtenä tavoitteena oli muodostaa rakennukselle energiatase. Taseen avulla saatiin tietoa energian jakautumisesta eri toimintoihin ja löydettiin tekijät, joita suunnittelussa tulee painottaa. Terminaalin lähiympäristössä tutkittiin ulkoilman laatua mittausten avulla. Mittaustietoja käytetään apuna tulevaisuuden ilmanottosuunnittelussa. Työssä tarkasteltiin energia- ja ainevirtoina lämpö-, jäähdytys- ja sähköenergian sekä veden ostoa, tuotantoa ja kulutusta sekä prosessointia. Terminaalin lämpötarpeesta hieman yli puolet katettiin kaukolämmöllä. Loput noin 45 % lämpöenergiasta saatiin ns. ilmaisenergioista. Näistä merkittävimmäksi havaittiin sähkölaitteiden luovuttama lämpömäärä. Lämpöhäviöiden kannalta merkittäviä energiavirtoja olivat ilmanvaihdon ja vuotoilmojen kautta siirtyvät energiavirrat, joiden osuuden todettiin olevan noin 80 % terminaalin kokonaislämpöhäviöistä. Vaipan lämmöneristyskyky ja kyky absorboida auringon säteilyä todettiin hyviksi. Tulevaisuudessa tärkeitä suunnittelunäkökohtia tulevat olemaan ilmanvaihdon ja vuotoilman kautta siirtyvien energiavirtojen hallinta sekä sähköenergian ominaiskulutuksen pienentäminen. Ulkoilma todettiin mittauksin hyvätasoiseksi. Lento- ja maaliikenteen päästöarvot olivat lähellä toisiaan ja selvästi ohjearvoja alemmalla tasolla. Päästöjen sijaintiin vaikuttivat liikennemääriä enemmän tuuliolosuhteet. Tulevaisuudessa tuloilma voidaan johtaa terminaaliin yhtä hyvin joko lento- tai maaliikenteen puolelta. The aim of this study was to examine energy flows, material flows and indoor climate in an airport terminal building. The middle terminal building at Helsinki-Vantaa airport was used as an example object in the study. The exterior surface of the first and the second phases in the terminal building formed an energy balance border of the study. Cooling system and quality of open air were examined as exterior factors of the balance border. The object of this study was to create an energy balance for the terminal building. With the help of the formed energy balance has gotten information about distribution of energy flows into different functions and about factors which should be emphasized in planning. The quality of open air was measured in the surroundings of the terminal building. The results of the measurements will be used in ventilation planning. In this study heating, cooling, electric energy and water flows were examined from the perspectives of buying, producing, distributing and consuming these energy and material flows. Over 50 % of the heating needed in the terminal building was supplied by district heating. The rest of the heating need was covered by so called free energy. The most noticeable of these free energy forms was the heating energy submitted by electrical devices. From the aspect of thermal losses, ventilation and leak air were the most notable energy flows. Their amount of the total thermal losses in the terminal building was found to be about 80 %. Facade’s heat insulation and ability to absorb radiation from the sun were found to be good. In the future, control of energy flows in ventilation and leak air will be important designing aspects. Reduction of the specific consumption in electric energy is also worthy of consideration. The quality of open air was measured to be good. The quantities of emissions both in air traffic and land traffic sides were found to be close to each other and clearly below the guide lines. Wind conditions were observed to affect more to the location of emissions than the amount or quality of traffic in the airport area. In the future incoming air can be taken as well either from the air traffic side or from the land traffic side of the terminal building.

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    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
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    2001
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      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
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      2001
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  • image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    Authors: Mehto, Maija;

    EU:n päästökaupan ensimmäinen jakso alkoi 1.1.2005. Päästökauppa on aiheuttanut sen piiriin kuuluvalle teollisuudelle monia haasteita ja riskejä kasvavien kustannusten muodossa. Massa- ja paperiteollisuus on päästökaupanpiiriin kuuluva teollisuudenala, johon päästökaupan kustannukset vaikuttavat haitallisesti globaalin hinnoittelun vuoksi. Massa- ja paperiteollisuudelle päästökaupasta voi koitua kustannuksia päästöoikeuksien ostamisesta, sähkön, polttoaineiden ja kemikaalien hinnan noususta sekä raaka-ainehuollon vaikeutumisesta. Toisaalta tehtaat voivat hyötyä päästökaupasta alittaessaan päästöoikeutensa tai myydessään sähköä ulkopuoliseen verkkoon. Massa- ja paperiteollisuudessa sähköä kuluu enimmäkseen pumppauksiin eli massan siirtoon ja mekaanisen massan valmistukseen. Suurimpia sähköenergian kuluttajia sellun valmistuksessa ovat soodakattila, puunkäsittely, valkaisu ja lajittelu. Lämpöä tarvitaan haihdutus-, kuivaus- ja keittoprosesseissa. Kemikaaleista klooridioksidin valmistuksessa käytettävä natriumkloraatti on kustannusten kannalta merkittävin kemikaali. Tässä työssä tutkittiin päästökaupan aiheuttamien kustannusten vähentämismahdollisuuksia kohdetehtaalla. Suurin potentiaali liittyy meesauunissa poltettavan maakaasun korvaamiseen mäntyöljyllä tai biomassan kaasutuskaasulla. Kemikaalikulutuksen osalta happidelignifiointi on merkittävin mahdollisuuskustannusten alentamiseksi. Lisäksi päästökaupan kustannuksia voidaan alentaa muun muassa oikealla mitoituksella ja sekundäärilämpöjen optimaalisella käytöllä. The first period of EU's emission trading scheme started 1.1.2005. Since then industries subjected to emission trading have faced many challenges and risks in the form of increasing costs. The pulp and paper industry is a part of emission trading scheme to which the costs associated with emission trading could have a negative effect due to global pricing ofit's products. The pulp and paper industry may face the costs of purchasing emission allowances, the increase in the prices of electricity, fuels and chemicalsand the negative effects on raw material deliveries. On the other hand mills may benefit from emission trading if they can go under their allowances or sell electricity outside the mill. In the pulp and paper industry electricity is consumed mostly by pumping and thus conveying materials and for the manufacture of mechanical pulp. The major electricity consumers in pulp mills are recovery boilers, wood handling, bleaching and screening operations. Heat isconsumed in evaporation, drying and cooking processes. Sodium chlorate used in the manufacture of chlorine dioxide is the most significant chemical when considering the costs of emission trading. In this thesis the possibilities to reduce the costs of emission trading were examined. The greatest potential to reduce these costs is to replace the natural gas burned in lime kilns for tall oil or biomass gasification gas. Chemical consumption can be significantly reduced with oxygen delignification. In addition the costs can be reduced byproper sizing of equipment and optimal utilization of secondary heat sources.

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    2006
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      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
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      2006
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    Authors: Rantala, Olavi;

    This paper describes the main features of a model developed for fore-casting economic developments, energy demand and greenhouse gas emissions in the EU area and Finland as well as for simulating the economic impacts of EU climate policy. Climate policy analysis necessitates a model of the whole EU area, because CO2 emissions of the EU area emission trading sector determine the demand and price of emission allowances. The main conclusion from model simulations is that output and employment losses induced by EU climate policy in 2008-2012 will be more se-vere in a small open energy intensive economy like Finland than in the rest of the EU area. The negative impacts of EU climate policy on export competitiveness, exports and output volume in Finland will be strongest in the energy intensive industrial sec-tors which belong to the EU emission trading sector.

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    Research . 2008
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      Research . 2008
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    Authors: Vinokurov, Mihail; Hammo, Simo; Hupponen, Mari; Luoranen, Mika;

    Hanke tähtää Lappeenrannan julkisen rakennuskannan energiatehokkuuden ja kokonaistaloudellisuuden parantamiseen. Energiatehokkuutta ja kokonaistaloudellisuutta kunnallisessa rakentamisessa kannustavat mm. kansainvälisten ja kansallisten sopimusten energiansäästötavoitteet, sekä kuntien tiukka budjettitilanne. Hankkeen yhteydessä on laadittu arviointikriteeristö rakennusinvestoinneista vastaavien viranomaisten käyttöön, mikä helpottaa tunnistamaan energiatehokkaita, kokonaistaloudellisia sekä laadukasta sisäilmastoa tukevia rakennusinvestointien toteutuskäytäntöjä. Kriteeristö on suunniteltu erityisesti kasvatus- ja opetustarkoituksiin suunnattuja rakennuksia varten. Jotta kokonaistaloudellisuustavoitteet täyttyisivät, työssä käytettiin hyväksi elinkaariajattelutapaa. Kriteerit laadittiin rakennuksen kolmelle tavoitteiden toteutumisen kannalta merkittävälle elinkaaren vaiheelle, eli suunnittelu-, toteutus- ja käyttövaiheelle. Kriteeristö on laadittu kirjallisuuden ja ammattilaisten haastattelujen tarjoaman tiedon pohjalta. Laadittua kriteeristöä koekäytettiin Myllymäen päiväkoti -hankkeen yhteydessä, jotta voitaisiin tunnistaa kriteeristön kehitystarpeita. Koekäytön yhteydessä toteutettiin myös mielipidekysely, jonka avulla kerättiin kriteeristön kehitysehdotuksia rakennushankkeen eri osapuolilta. Koekäytön tarjoaman tiedon nojalla kriteeristöä jatkokehitettiin vastaamaan paremmin käytännön tarpeita. Koekäyttö kohdistui kohteen suunnitteluvaiheeseen. Hankkeessa saavutettiin asetetut tavoitteet. Voidaan kuitenkin todeta, että kriteeristön jatkokehittämistä on syytä jatkaa. Koekäytön ulottaminen toteutus ja käyttövaiheeseen on tärkeää. Kriteeristön käsittelyalueen laajentamiselle korjausrakentamiseen sekä alueellisen tarkastelutavan käyttöönotolle olisi myös tarvetta. The aim of this project is the creation of a tool to improve the energy efficiency, overall economy and indoor climate quality in the public building stock of Lappeenranta. The motivation to improve the energy and cost efficiency in public buildings related to inter alia the energy saving targets set by international and national agreements and the economic challenges of municipalities. In the frames of this project, a set of evaluation criteria was created to help the officials responsible for building investments to identify methods for the implementation of new construction projects that promote energy and cost efficiency as well as indoor climate quality. The primary targets of the criteria are educational buildings. Life-cycle approach was used in this work in terms to ensure overall economy targets. The criteria were created for three phases of buildings’ life-cycle that were identified to be important from the perspective of the set targets. These phases were the design phase, construction phase and operational phase. The creation of criteria was based on the information gained from literature, interviews of professionals and the trial phase of criteria. In terms to identify the functionality of criteria, they were exposed for trial at the building project of Myllymäki kindergarten in Lappeenranta. The trial focused on the design phase of the object. In addition, the survey was conducted in terms to receive feedback and development proposals on the criteria from different parties of the building project. By using the new experience gained from the trial phase, the criteria were further developed. The targets set for this projects were met. However, it should be mentioned that there is a need to continue the further development of the criteria in the future. In addition to the design phase, it is important to extend the trial to the construction and operational phases. The extension of the scope of criteria to renovation projects and the implementation of a regional approach would also be important development steps. Loppuraportti

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    LUTPub
    2014
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      2014
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    Authors: Arposalo, Ari; Liedes, Matti;

    This research is part of a TRAKET-project which concentrates on the competitiveness of the transit routes to North-West Russia. This research report analyses the environmental and traffic safety effects of the transit traffic and the changes in their external cost effects as the traffic increases. Recommendations for the improvement of the environmental effects and the traffic accident rates are given in the report. In addition, measures to the development of new service concepts for the operators in transit traffic are presented. Tämätutkimus on osa TRAKET -hanketta, jossa keskitytään Luoteis-Venäjälle vievien transitoreittien kilpailukyvyn selvittämiseen. Tässä osatutkimuksessa tarkastellaan Suomen kautta kulkevan transitoliikenteen ympäristövaikutuksia ja turvallisuusnäkökohtia sekä niiden aiheuttamien kustannusten muuttumista liikennemäärän kasvaessa. Raportissa annetaan kehityssuosituksia ympäristö- ja onnettomuustilanteen parantamiseksi. Lisäksi tutkimuksessa esitetään uusien, transitoliikenteen osapuolille tarkoitettujen, lisäpalvelujen synnyttämiseen tarvittavia toimia.

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    LUTPub
    2007
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      2007
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    Authors: Kärkkäinen, Petteri;

    Uusiutuvan energian osuutta maailman energiantuotannossa halutaan kasvattaa, ja yksi sopiva energialähde on tuulienergia. Tuuliturbiinien rakentaminen on Suomessa ollut kasvussa, mikä tarkoittaa, että turbiineja rakennetaan entistä enemmän sisämaahan metsäiseen maastoon. Tämä tuo haasteita turbiinien rakentamiselle ja valinnalle sekä tuotannon optimoinnille. Metsäinen maasto, tai mikä tahansa virtauksien tielle osuva este, hidastaa tuulen nopeutta ja aiheuttaa tuuleen turbulenssia. Tässä työssä analysoidaan metsäisessä maastossa mitatusta tuulidatasta tuuligradientin ja tuulen turbulenssin jaksottaisuutta ja tilastollisuutta. Turbulenssin osalta käytetään turbulenssin intensiteettiä. Jaksottaisuutta tarkastellaan vuorokauden ja vuodenajan mukaan. Tutkimusaineistona toimii Lappeenrannassa TuuliMuukon tuulipuistossa LiDAR-tutkalla (Light Detection And Ranging) mitattu tuulidata. Datan analysointiin käytetään Matlab-ohjelmaa. Analysoinnissa havaittiin tuuligradientilla ja turbulenssin intensiteetillä olevan vuorokausijaksottaisuutta. Tuuligradientti vaihtelee vuorokauden aikana siten, että se on pienempää päivän aikana ja suurempaa yön aikana. Turbulenssin intensiteetti vaihtelee päinvastaisesti. Tilastollisesti suurin osa tuuligradientin eksponenttiarvon arvoista on välillä 0,2-0,6. Tuuligradientin potenssiarvo vaihtelee vuodenajan mukaan hieman, ja pienimpänä potenssiarvo on lämpiminä kuukausina kuten toukokuussa. Graafisen tarkastelun perusteella tuuligradientti poikkeaa selvästi standardin mukaisesta arvosta ainakin maaliskuussa. Turbulenssin intensiteetin arvot jakautuvat välille 0,02-0,2, joista suurin osa on välillä 0,10-0,16. Turbulenssin intensiteetin jakaumien perusteella tuuliolosuhteet näyttävät olevan standardien mukaisia, pois lukien tarkastelluista kuukausista syyskuun jakauman, joka poikkesi standardin mukaisesta. There is a need to increase the share of renewable energy in the world’s energy production and one suitable energy source is wind energy. The construction of wind turbines in Finland has been growing, which means that the turbines are built more and more inland where the terrain is forested. This brings challenges for the construction, selection and optimization of production of the wind turbines. Forested terrain, or any other obstacle, slows down the wind and causes turbulence to the wind. This bachelor’s thesis analyzes the wind conditions’, wind shear and turbulence, periodicity and statisticality from wind data that has been measured in forested area. Turbulence intensity is chosen to represent turbulence. Periodicity is viewed from the point of diurnal and seasonal variation. The research material used is wind data measured in Lappeenranta in TuuliMuukko wind farm with a LiDAR-radar (Light Detection and Ranging). Matlab-software is used to analyze the data. The wind shear and turbulence intensity were observed to have periodicity in diurnal time interval. The wind shear varies such as it is smaller during day and bigger during night. The turbulence intensity varies the other way around. Statistically the biggest share of the wind shear exponent’s values are between 0.2 and 0.6. The wind shear exponent varies a little by the season and the smallest it is during the warmest months like in May. Based on graphical review, the wind shear diverges clearly from the standard value at least during March. The values of turbulence intensity divide between 0.02 and 0.2, and the greater part are between 0.10 and 0.16. Based on the distribution of the turbulence intensity, the wind conditions look to be in accordance with standards, excluding September’s distribution which diverged from the standard values.

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    LUTPub
    2018
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      2018
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