Katiuska Alexandrino; Katiuska Alexandrino; Rafael Bilbao; Ángela Millera; +1 AuthorsKatiuska Alexandrino
Harvested from ORCID Public Data FileKatiuska Alexandrino in OpenAIRE Katiuska Alexandrino; Katiuska Alexandrino; Rafael Bilbao; Ángela Millera;Katiuska Alexandrino
Harvested from ORCID Public Data FileKatiuska Alexandrino in OpenAIRE María U. Alzueta; María U. Alzueta
Harvested from ORCID Public Data FileMaría U. Alzueta in OpenAIREAlkylated furan derivatives, such as 2,5-dimethylfuran (2,5-DMF) and 2-methylfuran (2-MF), have shown, at laboratory scale, a relatively high tendency to form soot. However, soot emissions from die...
8 citations 8 popularity Top 10% influence Average impulse Top 10% 
Powered by BIP!add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.<script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1021/acs.energyfuels.9b01760&type=result"></script>'); --> </script>For further information contact us at helpdesk@openaire.eu- Katiuska Alexandrino; Katiuska Alexandrino; Rafael Bilbao; Ángela Millera; +1 Authors
Katiuska Alexandrino
Harvested from ORCID Public Data FileKatiuska Alexandrino in OpenAIRE Katiuska Alexandrino; Katiuska Alexandrino; Rafael Bilbao; Ángela Millera;Katiuska Alexandrino
Harvested from ORCID Public Data FileKatiuska Alexandrino in OpenAIRE María U. Alzueta; María U. Alzueta
Harvested from ORCID Public Data FileMaría U. Alzueta in OpenAIREAlkylated furan derivatives, such as 2,5-dimethylfuran (2,5-DMF) and 2-methylfuran (2-MF), have shown, at laboratory scale, a relatively high tendency to form soot. However, soot emissions from die...
8 citations 8 popularity Top 10% influence Average impulse Top 10% Powered by BIP!add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.<script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1021/acs.energyfuels.9b01760&type=result"></script>'); --> </script>For further information contact us at helpdesk@openaire.eu - Lyubov Pyha; Juraj Durove; Yevhen Ogorodnyk; Hennadii Haiko;
Hennadii Haiko
Harvested from ORCID Public Data FileHennadii Haiko in OpenAIREThe concept and a new method for the shielded development of bottom gas hydrates have been proposed, the technological phases and constructive elements of their implementation have been substantiated. The research provides for the realization of the idea suggesting the simultaneous dissociation of the vast areas of a gas hydrate deposit, management of the targeted process of the penetration of methane recovered from gas hydrates into water space and its accumulation under the extensive gas-collecting shield wherefrom it is removed by bottom pipe transportation facilities. To do hydraulic fracturing, a well is drilled into the plane of the junction of the surface of a gas hydrate deposit and the rocks of a roof, the open system of fissures in the rocks of a roof is made through which produced gas is released to a gas-collecting blanket in a water.
1 citations 1 popularity Average influence Average impulse Average Powered by BIP!add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.<script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.4028/www.scientific.net/ssp.277.27&type=result"></script>'); --> </script>For further information contact us at helpdesk@openaire.eu - Lyubov Pyha; Juraj Durove; Yevhen Ogorodnyk; Hennadii Haiko;
Hennadii Haiko
Harvested from ORCID Public Data FileHennadii Haiko in OpenAIREThe concept and a new method for the shielded development of bottom gas hydrates have been proposed, the technological phases and constructive elements of their implementation have been substantiated. The research provides for the realization of the idea suggesting the simultaneous dissociation of the vast areas of a gas hydrate deposit, management of the targeted process of the penetration of methane recovered from gas hydrates into water space and its accumulation under the extensive gas-collecting shield wherefrom it is removed by bottom pipe transportation facilities. To do hydraulic fracturing, a well is drilled into the plane of the junction of the surface of a gas hydrate deposit and the rocks of a roof, the open system of fissures in the rocks of a roof is made through which produced gas is released to a gas-collecting blanket in a water.
1 citations 1 popularity Average influence Average impulse Average Powered by BIP!add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.<script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.4028/www.scientific.net/ssp.277.27&type=result"></script>'); --> </script>For further information contact us at helpdesk@openaire.eu - Claus Uwe Matzer;
Claus Uwe Matzer
Harvested from ORCID Public Data FileClaus Uwe Matzer in OpenAIRE Zamir Mera; Zamir Mera; Stefan Hausberger; +1 AuthorsZamir Mera
Harvested from ORCID Public Data FileZamir Mera in OpenAIRE Claus Uwe Matzer; Claus Uwe Matzer
Harvested from ORCID Public Data FileClaus Uwe Matzer in OpenAIRE Zamir Mera; Zamir Mera; Stefan Hausberger;Zamir Mera
Harvested from ORCID Public Data FileZamir Mera in OpenAIRE Natalia Fonseca; Natalia Fonseca
Harvested from ORCID Public Data FileNatalia Fonseca in OpenAIREAbstract In this study, the influence of real-world conditions on the performance of a selective catalytic reduction (SCR) system in a Euro-6 diesel passenger car was analysed. NOx emissions and exhaust gas temperatures were recorded before and after the SCR system during real-world driving tests. The results showed that engine-out NOx emissions were positively correlated with vehicle specific power (VSP). The average NOx reductions (deNOx) of the SCR were 82.8%, 91.7%, and 85.5% for SCR-inlet gas temperatures below, within, and above the thermal window of 220–340 °C, respectively. The 92% of the tailpipe NOx peaks appeared under high power (VSP ≥ 10 W kg−1) and an insufficient deNOx level. Urban driving and long downhill sections in rural conditions caused cooling down of the SCR-inlet gas to below 200 °C, where the deNOx efficiency decreased and became dependent on the exhaust mass flow rate. To estimate the NOx benefit and CO₂ penalty via electrical heating of the SCR-inlet exhaust gas, the vehicle, the real driving dynamics, and the heating were simulated in Passenger car and heavy-duty emission model (PHEM). The minimum threshold of 200 °C resulted in the best NOx/CO₂ trade-off, reducing on average 4.7 mg of NOx per gram of CO₂.
23 citations 23 popularity Top 10% influence Top 10% impulse Top 10% Powered by BIP!add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.<script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.applthermaleng.2020.115983&type=result"></script>'); --> </script>For further information contact us at helpdesk@openaire.eu - Claus Uwe Matzer;
Claus Uwe Matzer
Harvested from ORCID Public Data FileClaus Uwe Matzer in OpenAIRE Zamir Mera; Zamir Mera; Stefan Hausberger; +1 AuthorsZamir Mera
Harvested from ORCID Public Data FileZamir Mera in OpenAIRE Claus Uwe Matzer; Claus Uwe Matzer
Harvested from ORCID Public Data FileClaus Uwe Matzer in OpenAIRE Zamir Mera; Zamir Mera; Stefan Hausberger;Zamir Mera
Harvested from ORCID Public Data FileZamir Mera in OpenAIRE Natalia Fonseca; Natalia Fonseca
Harvested from ORCID Public Data FileNatalia Fonseca in OpenAIREAbstract In this study, the influence of real-world conditions on the performance of a selective catalytic reduction (SCR) system in a Euro-6 diesel passenger car was analysed. NOx emissions and exhaust gas temperatures were recorded before and after the SCR system during real-world driving tests. The results showed that engine-out NOx emissions were positively correlated with vehicle specific power (VSP). The average NOx reductions (deNOx) of the SCR were 82.8%, 91.7%, and 85.5% for SCR-inlet gas temperatures below, within, and above the thermal window of 220–340 °C, respectively. The 92% of the tailpipe NOx peaks appeared under high power (VSP ≥ 10 W kg−1) and an insufficient deNOx level. Urban driving and long downhill sections in rural conditions caused cooling down of the SCR-inlet gas to below 200 °C, where the deNOx efficiency decreased and became dependent on the exhaust mass flow rate. To estimate the NOx benefit and CO₂ penalty via electrical heating of the SCR-inlet exhaust gas, the vehicle, the real driving dynamics, and the heating were simulated in Passenger car and heavy-duty emission model (PHEM). The minimum threshold of 200 °C resulted in the best NOx/CO₂ trade-off, reducing on average 4.7 mg of NOx per gram of CO₂.
23 citations 23 popularity Top 10% influence Top 10% impulse Top 10% Powered by BIP!add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.<script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.applthermaleng.2020.115983&type=result"></script>'); --> </script>For further information contact us at helpdesk@openaire.eu - Aleksandr Sokolyanskii; Anzhelika Parkhomenko;
Anzhelika Parkhomenko
Harvested from ORCID Public Data FileAnzhelika Parkhomenko in OpenAIRE Artem Tulenkov; Artem Tulenkov
Harvested from ORCID Public Data FileArtem Tulenkov in OpenAIREIn this paper, the functional features of IoT services, as well as the criteria for their evaluation and selection were investigated. Existing international standards of cloud services quality for IoT systems have been analysed. A recommendation technique has been developed for selecting an IoT service for storing, processing and visualizing data from the Smart House system. Practical examples of IoT services and cloud platforms usage for the remote laboratory Smart House & IoT are shown.
2 citations 2 popularity Average influence Average impulse Average Powered by BIP!add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.<script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1109/stc-csit.2019.8929810&type=result"></script>'); --> </script>For further information contact us at helpdesk@openaire.eu - Aleksandr Sokolyanskii; Anzhelika Parkhomenko;
Anzhelika Parkhomenko
Harvested from ORCID Public Data FileAnzhelika Parkhomenko in OpenAIRE Artem Tulenkov; Artem Tulenkov
Harvested from ORCID Public Data FileArtem Tulenkov in OpenAIREIn this paper, the functional features of IoT services, as well as the criteria for their evaluation and selection were investigated. Existing international standards of cloud services quality for IoT systems have been analysed. A recommendation technique has been developed for selecting an IoT service for storing, processing and visualizing data from the Smart House system. Practical examples of IoT services and cloud platforms usage for the remote laboratory Smart House & IoT are shown.
2 citations 2 popularity Average influence Average impulse Average Powered by BIP!add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.<script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1109/stc-csit.2019.8929810&type=result"></script>'); --> </script>For further information contact us at helpdesk@openaire.eu - Jesus R. Melendez; Bence Mátyás;
Jesus R. Melendez
Harvested from ORCID Public Data FileJesus R. Melendez in OpenAIRE Sufia Hena; Sufia Hena
Harvested from ORCID Public Data FileSufia Hena in OpenAIRE Daniel A. Lowy; +1 AuthorsDaniel A. Lowy
Harvested from ORCID Public Data FileDaniel A. Lowy in OpenAIRE Jesus R. Melendez; Bence Mátyás;Jesus R. Melendez
Harvested from ORCID Public Data FileJesus R. Melendez in OpenAIRE Sufia Hena; Sufia Hena
Harvested from ORCID Public Data FileSufia Hena in OpenAIRE Daniel A. Lowy; Daniel A. Lowy
Harvested from ORCID Public Data FileDaniel A. Lowy in OpenAIRE
Ahmed El Salous; Ahmed El Salous
Derived by OpenAIRE algorithms or harvested from 3rd party repositoriesAhmed El Salous in OpenAIRE96 citations 96 popularity Top 1% influence Top 10% impulse Top 1% Powered by BIP!add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.<script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.rser.2022.112260&type=result"></script>'); --> </script>For further information contact us at helpdesk@openaire.eu - Jesus R. Melendez; Bence Mátyás;
Jesus R. Melendez
Harvested from ORCID Public Data FileJesus R. Melendez in OpenAIRE Sufia Hena; Sufia Hena
Harvested from ORCID Public Data FileSufia Hena in OpenAIRE Daniel A. Lowy; +1 AuthorsDaniel A. Lowy
Harvested from ORCID Public Data FileDaniel A. Lowy in OpenAIRE Jesus R. Melendez; Bence Mátyás;Jesus R. Melendez
Harvested from ORCID Public Data FileJesus R. Melendez in OpenAIRE Sufia Hena; Sufia Hena
Harvested from ORCID Public Data FileSufia Hena in OpenAIRE Daniel A. Lowy; Daniel A. Lowy
Harvested from ORCID Public Data FileDaniel A. Lowy in OpenAIRE Ahmed El Salous; Ahmed El Salous
Derived by OpenAIRE algorithms or harvested from 3rd party repositoriesAhmed El Salous in OpenAIRE96 citations 96 popularity Top 1% influence Top 10% impulse Top 1% Powered by BIP!add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.<script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.rser.2022.112260&type=result"></script>'); --> </script>For further information contact us at helpdesk@openaire.eu 53 citations 53 popularity Top 1% influence Top 10% impulse Top 10% Powered by BIP!add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.<script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.jobe.2018.07.021&type=result"></script>'); --> </script>For further information contact us at helpdesk@openaire.eu53 citations 53 popularity Top 1% influence Top 10% impulse Top 10% Powered by BIP!add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.<script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.jobe.2018.07.021&type=result"></script>'); --> </script>For further information contact us at helpdesk@openaire.eu4 citations 4 popularity Average influence Average impulse Average Powered by BIP!add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.<script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1007/s00267-015-0449-5&type=result"></script>'); --> </script>For further information contact us at helpdesk@openaire.eu4 citations 4 popularity Average influence Average impulse Average Powered by BIP!add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.<script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1007/s00267-015-0449-5&type=result"></script>'); --> </script>For further information contact us at helpdesk@openaire.eu- Fausto Posso Rivera; Javier Zalamea; Juan L. Espinoza;
Fausto Posso Rivera
Harvested from ORCID Public Data FileFausto Posso Rivera in OpenAIRE Luis G Gonzalez; Luis G Gonzalez
Derived by OpenAIRE algorithms or harvested from 3rd party repositoriesLuis G Gonzalez in OpenAIREThe incorporation of Energy Storage Systems (ESS) in an electrical power system is studied for the application of Energy Time Shift (ETS) or energy arbitrage, taking advantage of the turbinable energy discharged in hydroelectric plants. For this, three storage systems were selected: Lithium-Ion Batteries (LIB), Vanadium Redox Flow Battery (VRFB), and Hydrogen Storage Systems (H2SS). The spilled turbinable energy available at the Paute Integral hydropower complex in the Republic of Ecuador is taken as the case study. Based on real data from the operation of these plants, a distinctive element of the study, the performance of the selected energy storage systems was analyzed applying the Analytic Hierarchy of Process for decision-making, where technical, economic, and environmental criteria were considered. Electrical energy stored during the early morning seeks to displace the thermal generation during peak hours, close to the demand centers. The results show that all the storage systems analyzed satisfy the required demand, although VRFB is recommended for the ETS. From an economic point of view, LIB represents the best alternative. From a technical point of view, H2SS is slightly superior, while prioritizing environmental aspects, VRFB technology prevails. However, the selection of the best ESS alternative must be continually evaluated, due to permanent technological changes. It is concluded that ESS represent a viable alternative to improve the operational performance of hydroelectric plants, meet the variability of demand, improve the quality of the electrical energy delivered, and displace the pollution-generation plants. Ingeniería y Tecnología Digital
18 citations 18 popularity Top 10% influence Average impulse Top 10% Powered by BIP!add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.<script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.rser.2021.112005&type=result"></script>'); --> </script>For further information contact us at helpdesk@openaire.eu - Fausto Posso Rivera; Javier Zalamea; Juan L. Espinoza;
Fausto Posso Rivera
Harvested from ORCID Public Data FileFausto Posso Rivera in OpenAIRE Luis G Gonzalez; Luis G Gonzalez
Derived by OpenAIRE algorithms or harvested from 3rd party repositoriesLuis G Gonzalez in OpenAIREThe incorporation of Energy Storage Systems (ESS) in an electrical power system is studied for the application of Energy Time Shift (ETS) or energy arbitrage, taking advantage of the turbinable energy discharged in hydroelectric plants. For this, three storage systems were selected: Lithium-Ion Batteries (LIB), Vanadium Redox Flow Battery (VRFB), and Hydrogen Storage Systems (H2SS). The spilled turbinable energy available at the Paute Integral hydropower complex in the Republic of Ecuador is taken as the case study. Based on real data from the operation of these plants, a distinctive element of the study, the performance of the selected energy storage systems was analyzed applying the Analytic Hierarchy of Process for decision-making, where technical, economic, and environmental criteria were considered. Electrical energy stored during the early morning seeks to displace the thermal generation during peak hours, close to the demand centers. The results show that all the storage systems analyzed satisfy the required demand, although VRFB is recommended for the ETS. From an economic point of view, LIB represents the best alternative. From a technical point of view, H2SS is slightly superior, while prioritizing environmental aspects, VRFB technology prevails. However, the selection of the best ESS alternative must be continually evaluated, due to permanent technological changes. It is concluded that ESS represent a viable alternative to improve the operational performance of hydroelectric plants, meet the variability of demand, improve the quality of the electrical energy delivered, and displace the pollution-generation plants. Ingeniería y Tecnología Digital
18 citations 18 popularity Top 10% influence Average impulse Top 10% Powered by BIP!add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.<script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.rser.2021.112005&type=result"></script>'); --> </script>For further information contact us at helpdesk@openaire.eu - Jesús Casanova; Zamir Mera; José-María López;
Zamir Mera
Harvested from ORCID Public Data FileZamir Mera in OpenAIRE Natalia Fonseca; Natalia Fonseca
Harvested from ORCID Public Data FileNatalia Fonseca in OpenAIREAbstract Exhaust aftertreatment systems are crucial to ensuring real-world NOx emission limits for motor vehicles. Operating conditions constrain the NOx reduction performance of aftertreatment devices. This study analysed real-world NOx emissions, tailpipe exhaust gas temperatures, and air-fuel ratios during cold start in a closed-loop urban route, followed by hot-start real driving emissions (RDE) tests. Five Euro-6b sport utility vehicles (SUV) were tested: two gasoline vehicles with three-way catalyst (TWC), namely, one gasoline direct injection (G-DI) and one hybrid electric vehicle (HEV); three diesel vehicles with different NOx control systems, namely, only exhaust gas recirculation (EGR), lean-burn NOx trap (LNT), and selective catalytic reduction (SCR). The only-EGR- and LNT-equipped diesel vehicles and the G-DI vehicle surpassed the NOx Euro 6 limits in all tested sections. For the same vehicles, the total RDE emission factors were 9.0, 7.4, and 5.0 times the Euro 6 limits, respectively. In contrast, the diesel vehicle with SCR had an RDE emission factor 1.0 times the limit, and the HEV exhibited very low emissions at approximately 2 mg NOx km−1. However, during the cold start phase (first 5 min), the emission levels of the SCR and HEV vehicles surpassed the Euro 6 limits by 2.7 and 1.1 times, respectively. Based on the measurements at the tailpipe, the results indicate that cold start, urban driving, and cooling conditions of aftertreatment devices can lead to a decrease in the NOx conversion efficiency of TWC and SCR systems. The air-fuel ratio was key for the NOx conversion in TWC aftertreatment. The large differences between G-DI and HEV vehicles were primarily attributed to the lean and rich operations of the G-DI and HEV engines, respectively. To comply with stringent future regulations, lean-burn engines would require diesel-like aftertreatment. SCR and hybrid vehicles would require a careful aftertreatment thermal management or heating to further exploit their potential for reducing emissions in urban areas.
41 citations 41 popularity Top 10% influence Top 10% impulse Top 1% Powered by BIP!add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.<script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.atmosenv.2020.117878&type=result"></script>'); --> </script>For further information contact us at helpdesk@openaire.eu - Jesús Casanova; Zamir Mera; José-María López;
Zamir Mera
Harvested from ORCID Public Data FileZamir Mera in OpenAIRE Natalia Fonseca; Natalia Fonseca
Harvested from ORCID Public Data FileNatalia Fonseca in OpenAIREAbstract Exhaust aftertreatment systems are crucial to ensuring real-world NOx emission limits for motor vehicles. Operating conditions constrain the NOx reduction performance of aftertreatment devices. This study analysed real-world NOx emissions, tailpipe exhaust gas temperatures, and air-fuel ratios during cold start in a closed-loop urban route, followed by hot-start real driving emissions (RDE) tests. Five Euro-6b sport utility vehicles (SUV) were tested: two gasoline vehicles with three-way catalyst (TWC), namely, one gasoline direct injection (G-DI) and one hybrid electric vehicle (HEV); three diesel vehicles with different NOx control systems, namely, only exhaust gas recirculation (EGR), lean-burn NOx trap (LNT), and selective catalytic reduction (SCR). The only-EGR- and LNT-equipped diesel vehicles and the G-DI vehicle surpassed the NOx Euro 6 limits in all tested sections. For the same vehicles, the total RDE emission factors were 9.0, 7.4, and 5.0 times the Euro 6 limits, respectively. In contrast, the diesel vehicle with SCR had an RDE emission factor 1.0 times the limit, and the HEV exhibited very low emissions at approximately 2 mg NOx km−1. However, during the cold start phase (first 5 min), the emission levels of the SCR and HEV vehicles surpassed the Euro 6 limits by 2.7 and 1.1 times, respectively. Based on the measurements at the tailpipe, the results indicate that cold start, urban driving, and cooling conditions of aftertreatment devices can lead to a decrease in the NOx conversion efficiency of TWC and SCR systems. The air-fuel ratio was key for the NOx conversion in TWC aftertreatment. The large differences between G-DI and HEV vehicles were primarily attributed to the lean and rich operations of the G-DI and HEV engines, respectively. To comply with stringent future regulations, lean-burn engines would require diesel-like aftertreatment. SCR and hybrid vehicles would require a careful aftertreatment thermal management or heating to further exploit their potential for reducing emissions in urban areas.
41 citations 41 popularity Top 10% influence Top 10% impulse Top 1% Powered by BIP!add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.<script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.atmosenv.2020.117878&type=result"></script>'); --> </script>For further information contact us at helpdesk@openaire.eu - Ponce Jara, Marcos A.; Castro, M m;
Ponce Jara, Marcos A.
Harvested from ORCID Public Data FilePonce Jara, Marcos A. in OpenAIRE Peláez Samaniego, Manuel Raúl; Peláez Samaniego, Manuel Raúl
Harvested from ORCID Public Data FilePeláez Samaniego, Manuel Raúl in OpenAIRE Espinoza Abad, Juan Leonardo; +1 AuthorsEspinoza Abad, Juan Leonardo
Harvested from ORCID Public Data FileEspinoza Abad, Juan Leonardo in OpenAIRE Ponce Jara, Marcos A.; Castro, M m;Ponce Jara, Marcos A.
Harvested from ORCID Public Data FilePonce Jara, Marcos A. in OpenAIRE Peláez Samaniego, Manuel Raúl; Peláez Samaniego, Manuel Raúl
Harvested from ORCID Public Data FilePeláez Samaniego, Manuel Raúl in OpenAIRE Espinoza Abad, Juan Leonardo; Ruiz, Elena;Espinoza Abad, Juan Leonardo
Harvested from ORCID Public Data FileEspinoza Abad, Juan Leonardo in OpenAIREAbstract The Ecuadorian electricity sector has undergone several changes during the past decade. The objective of this paper is twofold: a) to show how the Ecuadorian electricity sector has evolved from 2007 to 2017, and b) to discuss the relationship between energy policies and their impacts on electricity supply, management, tariffs, and the country's economy. Although oil remains as the main energy source and the leading driver for economic revenue, several hydropower projects have been built or are under construction intending in part to reduce the country's dependence on oil. The installed hydropower capacity in the country in 2017 is approximately 81% higher than in 2007 and it is expected that, by 2018, approximately 93% of the electricity will be produced from hydropower. Currently, biomass and biogas contribute with 1.8% of the total electricity generation, but only 0.6% of the electricity is produced in wind and solar farms. Adoption of smart grid technologies is key to transform the Ecuadorian electricity network and to positively impact the quality of the electricity supply. The future of the Ecuadorian electricity sector relies on the successful implementation of the new Organic Law of Public Service of Electricity and on external financing for new energy projects.
62 citations 62 popularity Top 1% influence Top 10% impulse Top 1% Powered by BIP!add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.<script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.enpol.2017.11.036&type=result"></script>'); --> </script>For further information contact us at helpdesk@openaire.eu - Ponce Jara, Marcos A.; Castro, M m;
Ponce Jara, Marcos A.
Harvested from ORCID Public Data FilePonce Jara, Marcos A. in OpenAIRE Peláez Samaniego, Manuel Raúl; Peláez Samaniego, Manuel Raúl
Harvested from ORCID Public Data FilePeláez Samaniego, Manuel Raúl in OpenAIRE Espinoza Abad, Juan Leonardo; +1 AuthorsEspinoza Abad, Juan Leonardo
Harvested from ORCID Public Data FileEspinoza Abad, Juan Leonardo in OpenAIRE Ponce Jara, Marcos A.; Castro, M m;Ponce Jara, Marcos A.
Harvested from ORCID Public Data FilePonce Jara, Marcos A. in OpenAIRE Peláez Samaniego, Manuel Raúl; Peláez Samaniego, Manuel Raúl
Harvested from ORCID Public Data FilePeláez Samaniego, Manuel Raúl in OpenAIRE Espinoza Abad, Juan Leonardo; Ruiz, Elena;Espinoza Abad, Juan Leonardo
Harvested from ORCID Public Data FileEspinoza Abad, Juan Leonardo in OpenAIREAbstract The Ecuadorian electricity sector has undergone several changes during the past decade. The objective of this paper is twofold: a) to show how the Ecuadorian electricity sector has evolved from 2007 to 2017, and b) to discuss the relationship between energy policies and their impacts on electricity supply, management, tariffs, and the country's economy. Although oil remains as the main energy source and the leading driver for economic revenue, several hydropower projects have been built or are under construction intending in part to reduce the country's dependence on oil. The installed hydropower capacity in the country in 2017 is approximately 81% higher than in 2007 and it is expected that, by 2018, approximately 93% of the electricity will be produced from hydropower. Currently, biomass and biogas contribute with 1.8% of the total electricity generation, but only 0.6% of the electricity is produced in wind and solar farms. Adoption of smart grid technologies is key to transform the Ecuadorian electricity network and to positively impact the quality of the electricity supply. The future of the Ecuadorian electricity sector relies on the successful implementation of the new Organic Law of Public Service of Electricity and on external financing for new energy projects.
62 citations 62 popularity Top 1% influence Top 10% impulse Top 1% Powered by BIP!add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.<script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.enpol.2017.11.036&type=result"></script>'); --> </script>For further information contact us at helpdesk@openaire.eu
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