Abstract
The experimental investigation of building-integrated photovoltaic thermal (BIPVT) solar systems is essential to characterise the operation of these elements under real conditions of use according to the climate and building type they pertain. BIPVT systems can increase and ensure energy performance and readiness without jeopardising the occupant comfort if correctly operated. The present work presents a case study’s experimental analysis composed of a BIPVT system for heat recovery located in a controlled test room. This work contribution focuses on the presentation of the obtained measured value results that correspond to the BIPVT main boundary conditions (weather and room characteristics) and the thermal behaviour and performance of the BIPVT system, located in the Solar XXI Building, a nZEB exposed to the mild Mediterranean climate conditions of Portugal.
Highlights
In [41], there is an extensive review for the energy assessment through experimental analysis—in which it is highlighted that the accuracy and long-time period of data are essential to bringing reliability to the study
The building in which the case study is based is the Solar XXI building from the National Laboratory for Energy and Geology (LNEG, Lisbon, Portugal), which is recognised for having implemented a wide range of strategies to reduce the cooling and heating loads through solar control strategies and passive systems as buried pipes
The main building façade is composed of building-integrated photovoltaic thermal (BIPVT) systems that aim to generate electrical energy and act as a heat recovery system
Summary
The use of solar energy systems integrated into buildings is an urgent need, considering the impacts of the building sector on energy use and the usual non-renewable sources of energy [1]. The increase of building energy demands and shrinking resources has significantly impacted the standard of living for future generations. The development of solutions and alternative energy sources in the built environment has gained attention and became a priority in the last years. Buildings have to be prepared to respond to both heating and cooling challenging demands, and an example of a case study in this context may be found in [2]. The design of energy-efficient and affordable integrated solutions in buildings represents a very ambitious target
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