Photovoltaic-Thermal (PVT) Collectors With Heat Pump Systems for Heating Supply in Multi-Family Houses
Abstract
Photovoltaic-thermal (PVT) collector combines a solar thermal collector and a photovoltaic module in a single component, generating power and heat from the same area simultaneously. Hence PVT can be a crucial technology for the future energy supply of buildings. The paper presents a simulative study of PVT as source in heat pump systems for heat supply in multi-family houses. Results show that combining PVT collectors with borehole heat exchangers (BHE) offers the possibility of reducing and even eliminating BHE while achieving a high performance. The heat pump with a combination of PVT (80 m2) with one BHE with 150 m achieves a seasonal performance factor 𝑆𝑃𝐹 (𝐺𝑟𝑖𝑑) of 3.76. Additionally, the results confirm the good performance of PVT as a single 𝑏𝑆𝑡 heat source. Compared to PV with air-source heat pump, a PVT heat pump with 80 m2 accomplishes 𝑆𝑃𝐹 (𝐺𝑟𝑖𝑑) of 𝑏𝑆𝑡 3.45, whereas the maximum 𝑆𝑃𝐹 (𝐺𝑟𝑖𝑑) of PV (80 m2) to air source heat pump is 3.12.
Keywords
Photovoltaic-thermal (pvt) collector, Heat pump system, Trnsys simulation, Multi-family house