According to the energy characteristics of a college dormitory in a hot summer and cold winter area,based on two ways of solar energy utilization,the solar thermal energy supply system and solar photovoltaic energy supply system are designed respectively.TRNSYS simulation software is utilized to simulate the operating characteristics of the two energy supply systems,and the component performance,economy and emission reduction of the two systems are compared.The results show that:except the holiday time,the solar energy supply system heat collection efficiency is maintained at about 40%,the annual solar guarantee rate can reach 58%;the annual generating capacity of grid-connected photovoltaic power generation system is 311394 kW·h,with the self-utilization rate of generating capacity reaching 70.5%.The annual energy consumption cost of the solar photovoltaic energy supply system is110000 yuan less than that of the solar thermal energy supply system,the annual cost is reduced by 49000 yuan,and the annual carbon emission is reduced by 166 t.According to the optimization analysis of photovoltaic installation area,the annual cost of photovoltaic energy supply system will decrease by 2111 yuan when the photovoltaic installation area increases by 52 m2.The research results will provide reference and basis for choosing the appropriate form of solar energy utilization in university dormitory buildings.
college dormitorymulti-energy complementarysolar energyair source heat pumpenergy-saving economy
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