Study on Power Generation and Heating Characteristics of Solar Photovoltaic Cooling and Hot Air Interior Wall Heat Storage
This paper presents a heating system coupling photovoltaic waste heat and hollow ventilation interior wall(PV/T-HVIW system),which can effectively improve photovoltaic power generation efficiency and indoor temperature.TRNSYS software was used to establish the simulation model of the system,and the cumulative power generation,collector heat,indoor air temperature and heating load were simulated and analyzed.The results show that compared with the independent photovoltaic power generation system,the power generation capacity of the system is increased by 8.2%and the average power generation efficiency is increased by about 1.6%in the heating season.The recovered waste heat can effectively improve indoor thermal comfort.Compared with ordinary residential buildings without this system and buildings with direct hot air heating,the minimum indoor air temperature at night is increased by 6.3℃and 2.7℃respectively,ensure that the minimum indoor temperature is 15℃,the night heating load is reduced by 88.0%and 61.1%.