Simulation Study On Solar Absorption Air-conditioning System In Hot Summer And Cold Winter Zone

This article focused on a solar absorption air-conditioning system in hot summer and cold winter zone, which can supply the villa air-conditioning, heating and hot water. Analyzing the solar energy resources in hot summer and cold winter zone , hourly variation of temperature and solar radiation by changes of hours in three typical cities, Wuhan, Nanchang, Shanghai, in spring, summer, autumn and winter typical days.The cycle work processes and thermal calculation model was developed to simulate the performance of the system of the single-stage lithium bromide absorption refrigeration. taking three typical districts, Wuhan, Nanchang, Shanghai for examples, according to their weather conditions, calculate a villa building cooling and heating load,and simulate the system performance on typical summer and typical winter day to obtain the system performance parameters by the change. By studying the relationship between solar collector efficiency, the coefficient of performance of absorption chiller, total system efficiency and solar collector outlet temperature, the reason-able temperature of solar heat source was obtained.It is found that solar absorption refrigeration system match well with the regional air Ear, the higher the environmental temperature, the more need for cooling the season and region, the greater the amount of solar radiation, the greater the system's cooling capacity. It is also found that solar heat for heating in the heating season can not meet the requirements of the systems; it must be provided necessary energy by auxiliary heat, so the percentage of solar heating is low. Hourly solar radiation intensity and indoor hourly cooling and heating load changes are not synchronized, they is a contradiction between energy supply and energy demand, so it is necessary to set a energy storage system.