EAC - Artigos em revistas internacionais
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Browsing EAC - Artigos em revistas internacionais by Subject "BIPVT"
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- Techno-economic analysis of a renewable energy based multigeneration system for zero energy buildingsPublication . Aelenei, Laura Elena; Rodrigues, Carlos; Brites, Maria João de Sousa; Viana, SusanaABSTRACT: The present study explores the contribution and benefits of a renewable energy based multigeneration prototype integrating a luminescent compound parabolic concentrator, a photovoltaic/thermal system and thermal storage using phase change materials. A numerical model was developed for assessing the energy performance of the prototype and the results are presented for three different European locations. A simplified economic analysis was also developed and presented for two different scenarios and the same European locations. The results reveal that the installation of the IDEAS system in Lisbon, with a total estimated yearly use of solar energy of 1215 kWh and an amount of energy sold to the grid of 40.6 kWh, results in savings of 266 (26 % of energy bill). For the Ferrara location, with a total estimated yearly use of solar energy of 967 kWh and 19.8 kWh of energy sold to the grid of, results on 229 (16 % of energy bill) of annual savings. In Dublin, with a total estimated yearly use of solar energy of 862 kWh and an amount of energy sold to the grid of 20.5 kWh, results on annual savings of 257 (14 % of energy bill).
- Thermal behavior of a BIPV combined with water storage: an experimental analysisPublication . Lourenço, José Marco; Aelenei, Laura Elena; Sousa, Miguel; Facão, Jorge; Goncalves, HelderABSTRACT: Buildings play an active role in the global energy consumption and are required to not only minimize their energy use, but also generate energy in a sustainable manner. The integration of renewable energies in building elements can improve their overall performance, as they are able to replace common construction materials, while offering both electrical and thermal energy. The scope of this paper is to present the first results of an experimental study of a Building-Integrated Photovoltaic system combined with a water storage tank (BIPV-WS), a combined integration not extensively studied yet. Both layers are separated by a ventilated air cavity, and the thermal behavior of the system was analyzed experimentally in real functioning conditions. The water tank performs as a thermal storage, maintaining a regular temperature of about 20-30 degrees C during a typical winter day of Lisbon for a period of 11 h. Moreover, through the ventilation of the air cavity, the heat provided by the solar panel was naturally recovered to the indoors of the building, while keeping the temperature high enough to heat up the water. During summer, the ventilated BIPV-WS enabled beneficial nocturnal heat loss while delaying diurnal space heating.