Research On Application Of Ashp And Solar Energy Combined Heating System In New Rural Community In Northern China

With the development of economy and society,the use of a large number of traditional heating energy,environmental problems become increasingly prominent,fog-haze form increasingly serious,urgent to be resolved.In this background,this subject relies on China's large-scale renewable energy development project-the northern region of high proportion of renewable energy multi-source complementary heating system development and incentive policy research project,mainly through the introduction of ASHP and solar collectors work principle and performance,this research pointed out that there are the limitations when the two heating systems are separately heated,presented the ASHP and solar energy heating system.By combining the heating characteristics of the two heating systems,the research constructed the ASHP and the solar energy heating system,puted forward the basic form,operating mode and system control mode of the heating system.Based on the transient calculation model of each heating source equipment in the combined heating system,the transient calculation model of the combined heating system is established.Secondly,the research takes 50000 square meters of rural new community in Beijing as a research object.Through the building load simulation,we get the time-dependent heat load of the whole building.Combined with the constructed ASHP + solar energy + electric auxiliary heating system diagram,the research established the transient simulation model of joint heating system on the TRNSYS platform.This article uses the lowest annual cost of the system as the optimization target,under Non-TOU for residents,TOU for residents and TOU for commercial businesses price policies,to optimize equipment composition and ratio of the joint heating system.It is concluded that,compared with the annual cost of the individual heating system,it is not economical to use solar energy for heating at the existing cost level.If the joint heating system is used in Beijing area,it requires the government to initial investment subsidies for solar collectors to reduce its price level.Then,to guide the practical application of the joint heating system,a typical scenario analysis was carried out for the joint heating system under TOU for residents It mainly carries on the system energy consumption simulation and the analysis at different energy consumption levels,different areas,different cost levels,different price levels and different lending ratesFinally,the environmental benefits of the joint heating systems in Beijing,Lanzhou and Shenyang were analyzed under TOU for residents.It is concluded that the environmental benefits were obtained and polluted gas emissions are significantly reduced when the ASHP + solar energy + electric auxiliary heating system was used for heating.