Thermal Behavior of a BIPV Combined with Water Storage: An Experimental Analysis

José Marco Lourenço, Laura Aelenei, Miguel Sousa, Jorge Facão and Helder Gonçalves
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José Marco Lourenço: Laboratório Nacional de Energia e Geologia (LNEG), 1649-038 Lisboa, Portugal
Laura Aelenei: Laboratório Nacional de Energia e Geologia (LNEG), 1649-038 Lisboa, Portugal
Miguel Sousa: Laboratório Nacional de Energia e Geologia (LNEG), 1649-038 Lisboa, Portugal
Jorge Facão: Laboratório Nacional de Energia e Geologia (LNEG), 1649-038 Lisboa, Portugal
Helder Gonçalves: Laboratório Nacional de Energia e Geologia (LNEG), 1649-038 Lisboa, Portugal

Energies, 2021, vol. 14, issue 9, 1-19

Abstract: 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 °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.

Keywords: water storage; nZEB; integrated façades; building-integrated photovoltaic system; buildings (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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