Thermal impact of solar envelopes on zero energy buildings – a case study in warm climate
DOI:
https://doi.org/10.46421/encacelacac.v18i1.7209Keywords:
BIPV, Thermal impact, Architectural envelopes, NZEBAbstract
A central concern regarding photovoltaic integration in architectural envelopes is related to the heating of the modules, which, when receiving solar radiation, can reach high temperatures and transfer heat to indoor environments, affecting their energy efficiency and thermal comfort. To investigate the thermal influence of photovoltaic integration in buildings, the LabZero – UnB building, a state-of-the-art example of BIPV, located in Brasília (Bioclimatic Zone 4), was used as a case study. The study is based on a literature review on the thermal impact of photovoltaic systems in BIPV buildings and an investigation of products available in the Brazilian market. Photovoltaic integration alternatives were developed and evaluated through thermo-energy simulations using DesignBuilder. The results indicate that photovoltaic integration solutions with a shading function can positively contribute to reducing heat gains from direct irradiation on the envelope, significantly impacting energy demands for air conditioning and potentially guiding future photovoltaic integration projects.
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