24 June 2014

Photovoltaic Thermal (PVT) Integrated Ground Source Heat Pump System Annual Energy Performance Simulation for A Multi-load Case

One way to improve the efficiency of renewable energy system is by integrating two or more devices or so called the hybrid system. In this study, the change of the Ground Source Heat Pump (GSHP) seasonal performance factor will be observed when it is
integrated with Photovoltaic-Thermal (PVT) to meet the multiple loads of house and office. Basically, the strategy to get this efficiency improvement is by combining the water outlet of GSHP which firstly heated by desuperheater and the output of PVT in one (preheat) tank. In the solar preheat tank, the heat from PVT will be added through heat exchanger as the supplementary to the hot water which is previously from city water passing desuperheater of GSHP. The final output of GSHP with the heat addition from PVT and the efficiency of standalone GSHP will be compared. GSHP-PVT hybrid system has the lowest energy consumption followed by GSHP stand-alone and reference case (simple sum of house and office) with 31.8kWh/m2-yr, 78.7kWh/m2-yr and 107.6kWh/m2-yr respectively.