Economic and environmental analysis of the optimum design for the integrated system with air source heat pump and PVT

Recently, research on a hybrid heat pump system that combines photovoltaic-thermal (PVT) and air source heat pump (ASHP) technologies has been actively conducted. However, there is a lack of research on validating the integrated ASHP-PVT system model based on real buildings and designing the integrated system optimally. In this study, a prediction model was constucted using dynamic simulation, validated based on a real building. The integrated system was optimally designed for real application, and a comprehensive performance evaluation was conducted using the conventional model. The payback period of the optimum model was 9.42 years, 3 years shorter than the conventional model. The optimum model showed an increase in power consumption by approximately 4% compared to the conventional model. However, power consumption was still observed to decrease by up to 43% when compared to a model that does not utilize PVT. This study shows that the proposed system promotes decarbonization of the building sector and provides considerable economic benefits through optimum design implementation.