Study On Optimization Of Solar Heating System With Seasonal Storage In XinJiang

In recent years,the thermal utilization of solar energy has become the main direction of clean energy utilization.Xin Jiang is rich in solar energy resources.If it can be stored across seasons for heating in winter,the consumption of fossil energy will be greatly reduced.This paper studies the optimization of solar heating system with seasonal energy storage in Xin Jiang,in order to provide a reference for the optimization of the heat source selection of the heating system.First of all,the paper introduces the research status and the working principle of the solar heating system with seasonal energy storage.Secondly,taking a corps park in Urumqi,Xin Jiang as the research object,the heat load of the park is calculated by De ST software,and the main equipment of the system is designed;the solar energy cross season storage heating system is modeled by TRNSYS software,and the relevant parameters are set.Thirdly,based on the system model,TRNSYS software is used to optimize and analyze the equipment capacity,operation parameters and control strategy of the system,and it is concluded that: the optimal storage ratio of the system is 3.6;the operation strategy of combined solar energy direct supply and storage pool can achieve higher solar energy guarantee ratio compared with the operation strategy of separate heating of storage pool;When the maximum value of the difference between the outlet temperature of the solar energy collector and the storage temperature of the heat reservoir is 4 ℃and the minimum value is 0 ℃,the COP of the system is higher.Then,according to the model,TRNSYS software is used to optimize and analyze the equipment capacity,operating parameters and control strategy of the designed system,and the conclusion that the optimal storage ratio is 3.6 is obtained.Finally,the energy efficiency,economy and environmental benefits of solar heating system with seasonal energy storage are calculated and analyzed respectively,and it is concluded that the solar energy assurance rate of solar heating system with seasonal energy storage designed in this paper is 91%;compared with the central heating system and gas boiler heating system,the economy is better,and the environmental benefits are better.