Simulation Analysis Of Gas-Solar Combined Heating System Based On TRNSYS

The environmental pollution caused by the use of coal for building heating in winter is becoming more and more serious in our country,so it is urgent to carry out the renovation of clean building heating,especially in town and town areas.By increasing the use of renewable energy,reducing the proportion of traditional coal-fired fuel consumption and completing the structural transformation of energy consumption,the problems of heating energy consumption and environment can be effectively solved in rural areas of China.This paper takes the typical township residential buildings in southwest Shandong as an example.Based on the existing heating methods and existing problems,this paper relies on the abundant solar energy resources and gas resources in southwest Shandong area,and other advantages,such as abundant solar energy resources and gas resources,and so on.The application of gas-solar combined heating has been carried out.Sexual research.Firstly,this paper expounds the basic theory of the research,and demonstrates the feasibility of the gas-solar combined heating system by analyzing the climate characteristics,the solar energy resources and the building characteristics of the typical farm houses in southwest Shandong.Then,the scheme of solar heating system is proposed in this paper,and the operation of the system during heating period is simulated by using TRNSYS software to verify whether the system can meet the heating needs of the users in the area where the research object is located.Then,two kinds of gas-solar combined heating systems are designed,that is,gas-solar parallel heating system and gas-solar series heating system.The operation of two kinds of systems in heating season is simulated by TRNSYS software.The energy consumption,system efficiency and energy saving of the two systems are analyzed.The conclusion is that the energy saving effect of the second scheme,gas-solar series heating system,is more remarkable.On this basis,the optimum collector area of the series heating system is determined by the economic analysis method,and the economic efficiency of the system is guaranteed.It is found that the heating energy consumption of the building during heating period is greatly reduced and the energy-saving effect is veryremarkable through the modification of external insulation and simulation of the exterior wall envelope structure of the building.Finally,after the optimization of the scheme and the transformation of the building heat preservation,the selected system is simulated and simulated again,and the efficiency of the wall-hanging furnace and the energy efficiency index of the solar energy are calculated and analyzed,so as to evaluate the applicability of the system.The scheme of gas-solar series heating system studied in this paper is suitable for heating in heating period of residential buildings in southwestern Shandong.At the same time,it is one of the important measures to solve the problem of high heating energy consumption.