Volume 18: Sustainable Energy Solutions for a Post-COVID Recovery towards a Better Future: Part I

Study on the performance of solar coupled heat pump cogeneration zero carbon energy system for villa Dengxin Ai, Ke Xu, Zhiyong Gan, Ye Li, Han Yue

Abstract

In this paper, a cogeneration system coupled with low concentrating photovoltaic/thermal (LCPV/T) technology and heat pump is proposed to meet the energy consumption of villa. The system is mainly composed of low concentrating photovoltaic/thermal module (LCPV/T), water source heat pump and capillary network radiation ceiling. LCPV/T generates clean electric energy and thermal energy by absorbing solar radiation, the system can achieve self-sufficiency in electricity / heat and achieve the goal of zero carbon building with appropriate operation mode. Taking the real weather data of Tianjin as the input parameters, the system performance is simulated by using the simulation software TRNSYS. The results show that the electric energy and heat energy produced by the system can fully meet the annual power consumption and the heat load in the heating season of the villa. LCPV/T system can also improve the cop of heat pump and save energy. Overall, the comprehensive utilization efficiency of solar energy of the system can reach 75%, including electric efficiency of 12% and thermal efficiency of 65%.

Keywords Low concentrating, photovoltaic/thermal (PVT), heat pump, cogeneration