Research on BIPVT-Wastewater Source Heat Pump System for Bathroom Hot Water Supply

This study proposes a new BIPV/T-sewage source heat pump coupled energy supply scheme to address the high energy consumption problem of bathroom heating systems in universities in cold regions. Based on the measured data of a university bathroom in Shenyang, an integrated system was constructed, which includes a photovoltaic electric heating integrated roof, a layered thermal storage water tank, a sewage source heat pump, and an intelligent control device. Through TRNSYS dynamic simulation and multi-objective optimization using genetic algorithm, the system achieved an annual heating capacity of 216909 kWh and a solar energy contribution rate of 56% −85%. The research results show that after optimization, the COP of the system operation has been improved to 4.92, with a conventional energy substitution of 52.4 tons of standard coal compared to the traditional gas boiler scheme.