Performance analysis of PVT systems applicable to apartment housing structures: experiment and simulation

Since Korean apartments are high-rise structures, the only renewable energy that can be applied for ZEB advantage is in fact solar energy. The CO₂ reduction effect of PVT, which can produce heat and electricity at the same time, has already been noted, and is 2.1 times greater than that of PV alone. Like the solar thermal system, the PVT requires a differential temperature controller (mode 1), which can increase the price. In the present work, the new methods, mode 2 and mode 3, that eliminates the costly differential temperature controller was proposed and the experiment was conducted. While electricity is generated from PV, mode 2 operating the circulation pump with this electricity, has some heat loss during weak solar radiation. Mode 3, which supplemented mode 2, showed equivalent performance compared to the existing method, mode 1. The simulation results for these Modes were consistent with the experimental results to within 5 %, and from this, the validity of the existing simulation research results was verified. The annual simulation showed a CO2 reduction effect of about 158 kg_CO₂/m² year regardless of the method.