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Pòster presentat a l'European Energy Research Alliance Conference 2016

Nowadays, it is increasingly common to hear about environmental issues. This fact keep us to continually try to improve energy optimization, either through new storage devices that pollute less or improvements in the environmental energy generation systems. Recent new types of devices under study are those called supercapacitors. Supercapacitors are electronic devices able to store charge in form of electrical energy. This energy is stored as an electric field, so supercapacitors are less polluting than standard batteries, which obtained its energy by chemical reactions. Their name is determinate by the high capacity that can achieve (up to 1000 F). The aim of this project is to find a model to characterize the behaviour of supercapacitors from their charge and discharge, analyze the efficiency of these devices and try to find if the energy losses could be represented only by a series resistance or not. The steps that have been followed to achieve the main aim were to design a charge-discharge circuit based on two methods (constant current source and pulse current source); collect and process the measurements obtained and analyze the supercapacitors behaviour during the process of charge-discharge. Finally, a model of an equivalent circuit for supercapacitors have been found and characterize whit the values obtained from the results of charge-discharge process. In order to validate the model searched, it has been simulated with a simulation program.

The back-contact back-junction BC-BJ solar cell concept is a promising photovoltaic structure for both laboratory and industrial c-Si solar cells. High efficiency devices based on this concept have been reported in the past using either diffused regions or applying the heterojunction with intrinsic thin layer HIT concept to perform both base and emitter contacts. In this work we use 3D numerical simulations to study the impact of technological parameters on device performance of c-Si(p) BC-BJ solar cells with point-like doped contacts. Numerical simulations allow us to optimize rear contact geometry as a trade-off between recombination and base resistive losses, leading to photovoltaic efficiencies higher than 18.3% and up to 22.3% on 2.2 cm FZ substrates depending on the back contact pattern and the passivation quality of base contacts. 28th European Photovoltaic Solar Energy Conference and Exhibition; 1607-1610

Energy is a precious resource, and yet it is often wasted due to processes using it not being optimal. Process integration addresses this problem by trying to use potentially wasted resources, such as mass or energy, which would be sent outside the system. By using as an energy source internal elements of the process that otherwise would be wasted, we can reduce energy dependency on external sources, thus reducing energy costs. The problem is that modifications to achieve this goal come at a price, and then It is hard to decide if is worth reducing costs on external utilities at the expense of investing in new equipment for process integration. The objective of this project is to develop a software tool capable of doing Pinch Analysis on an industrial process. The tool is meant to assist the engineer, making easier to analyze a process involving hot and cold streams, displaying graph data to visualize possible energy recovery, helping to make decisions by estimating costs on utilities and on new equipment in order to find an optimal solution for process integration. Furthermore, the tool is not simply programmed in classic functional way, but it is made using class based OOP (object oriented programming) and heavily documented so it can be easily modified and further upgraded to add more and more capabilities to it. Outgoing

Electrification systems based on the use of renewable energies can provide much needed electricity to isolated communities, particularly those living in poverty in rural areas. Designs that combine wind and photovoltaic (PV) technologies as well as individual systems and microgrids have proven advantageous. In this context, the aim of this case study is that students develop a Mixed Integer Linear Programming (MILP) model to design such projects. The model is based on the one presented by Ferrer-Martí et al. [2013] and allows minimizing the project cost, while considering the detail of the community, the energy resources and the available equipment. As a result, the size and location of all the equipment to install are defined. Case study prepared as teaching material for engineering courses, aiming students to use linear programming to solve a real problem in developing countries: to extend access to electricity in rural areas through renewable energy systems.

This document corresponds to Task 5.2 NZEB pilot projects development, Deliverable 5.2 Basic project conceptual design with feasibility analysis for eight pilot project of the SUSTAINCO project and should present a structure of pre-feasibility studies for eight NZEB projects implementation. It aims to give an overview of how SUSTAINCO project implementation is to be prepared and which technical and financial parameters to concern.

The aim of this project is to create a collaborative tool, a wiki, which can be used together by professors, researchers, administrative employees and students of any of the Universities who are committed to experimentation on Sustainable Development. Sustainable Development is growing up thanks to different researchers and conscientious people who start careers committed to social and environment aspects by their own. If these kind of persons contribute worldwide with their best to this wiki, it will be very advantageous for everyone. Each of them can see the work of other developers and can contribute with their own investigations, simultaneous helping and getting help from other participants of the wiki. Returning to the wiki, it is important not only to connect people but to collect, exhibit, permit voting and selection of the best entries exposed in the database of the wiki. It is a collaborative web. More precisely, it is an open website to visit and to collect information but not to contribute on it. People who are interested in participating have to create an account and, from this moment, they can contribute with new entries, modify existing ones or participate in surveys about the best one study of the year. The most important reason to force user identification is to avoid any harm to the web. Each change can be controlled and reverted, if necessary, by the responsible of the wiki. This operation will be explained with more details during the project. During this exposition all the contents of this website will be detailed, and also the choice and use of the software that was selected to create it. Finally, after working with the project, both the improvements that it will need, and the final solution to the detected problems will be explained. Of course this project can continue with other students, and many possible improvements to the original page are outlined and prepared.

Com a part de l'equip d'Ecoserveis (http://www.ecoserveis.net), el treball consistirà en desenvolupar diferents estudis enmarcats dins del projecte europeu TESSe2B (http://tesse2b.eu), que forma part del programa H2020, i és finançat per la Comisió Europea. El projecte tracta d'una prova pilot en un habitatge unifamiliar aïllat situat a Calonge de Segarra, que inclou la instal·lació d'un sistema de geotèrmia utilitzant materials de canvi de fase i solar tèrmica, tot plegat per a cobrir les necessitats de climatització i ACS de l'habitatge. Hi ha diversos aspectes a analitzar: - Dissenyar el sistema hidràulic i el diagrama de control (és la fase en la que es troba actualment el projecte). - Introducció als materials de canvi de fase i analitzar aquest cas práctic. - Caracterizació de la demanda energètica del edifici, a partir d'un model 3D. - Dimensionar la bomba de calor i els pous a partir de dades del terreny ja preses. - Dimensionar les plaques tèrmiques per cobrir un 30% de la demanda, i com situar-les. - Integració del sistema i pèrdues de càrrega. - Apartat de divulgació