Energy Consumption Analysis And Evaluation Based On The Life Cycle Of Hybrid Solar Ground Source Heat Pump Air Conditioning System

On account of the unbalanced hot and cold load phenomenon in northern cold regionof different seasons,this article takes a solar assist ground source heat pump airconditioning system in Tianjin as the research object,introduces the composition of thesystem equipments and monitoring instruments in detail.During the running time of one and a half year,the system stores solar energyresource in the underground beyond heating season,for extracting in winter.The authoraccording to actual operation data of the system,from collection efficiency,heataccumulation rate,heat extraction rate,ground temperature variation aspects,analyzes thecharacteristic of solar assisted heat source.The cooling and heating performance of GSHPsystem and SAGSHP system is given out evaluation and improvement suggestions.Onthe base of local energy-saving standardization,the building’s heat consumptionindex(22.97W/m2)and coal consumption index(6.28kg/m2)are also calculated.By means of life cycle assessment theory,calculates the construction energy list ofair conditioning system.According to the impact assessment method,for main energy suchas fossil oil,natural gas,coal,computes the resource depletion coefficient of airconditioning system.Using TRNSYS simulation software to create the physical model of this system andtwo sets of comparison system(water chiller and gas boiler,GSHP assisted electricheater).After testing and verifying the reliability of this models,counts up the total energyconsumption during the using period(30years).Finally,from two aspects of resource depletion coefficient and the amount ofstandard coal consumption,shows that solar energy-ground source heat pump airconditioning system has the advantage of saving energy and reducing consumption(14.3%lower than WCU-GFB system and15.4%lower than GSHP-EH system),laying goodfoundation for further research and application.