Design And Simulation Analysis Of Solar Heating And Cooling System

With the continuous development of the global economy,the demand for energy is increasing in all regions.However,grow with each passing day of excessive exploitation and use,resulting in deterioration of the environment,resource depletion and other serious consequences.Therefore,standing on the sustainable development of the Chinese nation,we urgently need to adjust the energy structure,promote resource conservation,the establishment of sustainable development by the way.The use of renewable energy is a key way to solve the problem.The advantages of solar with its richly endowed by nature,have attracted more and more attention.But as we all know,the efficiency is relatively low utilization of solar energy,the economy is relatively weak,so how to improve the efficiency and economy is a problem worthy of study.Now,Solar energy is widely used in hot water systems,but air-conditioning applications are relatively small.The solar radiation in summer is higher,the required indoor cooling load is hefty,at the same time,the domestic hot water demand is relatively reduced.Therefore,in order to improve the utilization rate of solar energy,solar energy and cogeneration system in this paper,at the same time to meet the life of hot water and summer air-conditioning load demand,achieve energy saving,reduce energy consumption.First,taking the ? /COP(Ratio of total area to COP of lithium bromide chiller)as the optimization target,the single effect lithium bromide unit was optimized,the total area of the lithium bromide unit was reduced by 7.68%,and the ? /COP was decreased by 5.38%.Second,through the analysis and comparison of different energy sources,it is concluded that the use of natural gas as the auxiliary heat source is the bestThird,the solar energy heat and cold production system and the solar energy lithium bromide absorption air conditioning system are compared.The results show that the solar energy heat and cold cogeneration system are better than the solar absorption air conditioning systemFourth,the comparison of the hot and cold co-generation system of CPC solar collectors with the cold and heat generation system of flat solar collectors,CPC solar collector heat and power cogeneration system energy efficiency are higher.