| 요약2 |
A photovoltaic/thermal(PVT) collector technique maximize the effectiveness of solar radiation energy, producing electricity and heat simultaneously. It prevents a power drop due to PV surface temperature with a temperature coefficient in the range from -0.3 %/K to -0.65%/K. Also, an absorbed solar thermal energy can be applied on heating in the winter and dehumidification cooling system in the summer respectively. Air flow in the collector plays a crucial role in the thermal and electrical performance of air type PVT, depending on the figuration and orientation of fin inside collector. In this study, PVT shapes were designed as three types(basic type, horizontal type, vertical type) and analyzed by CFD(Computational Fluid Dynamics). Based on results of flow analysis, three air type PVT systems were experimented, and the thermal and electrical performance of those was investigated. The horizontal fins break the laminar airflow and forms a vortex flow pattern, which improve heat exchange rate. As its effect, horizontal type PVT showed the highest electrical performance by cooling, and equivalent heat performance in experimental result. |