Operation Parameters Optimization And Experimental Research Of Solar-Soil Source Absorption Heat Pump System

With the rapid development of economy,energy and environmental issues have increasingly become the focus of attention.Meanwhile,the development and application of renewable energy have gained more and more attention in various fields.Solar energy and ground source heat pump are renewable energy technology,and if we can combine the advantages of both of them,there must be a very broad prospects for development.Based on the technology of solar energy collection heat,absorption heat pump and underground heat transfer technology,this paper has put forward a solar-soil source absorption type heat pump system which combine the above three types of technology.Based on the mathematical model of each part of the established system,this paper has built a solar-soil source absorption type heat pump system model by the TRNSYS simulation software.The system was simulated during the heating period in Beijing area as an example,which lead to performance parameters of the system in different division temperatures,including heating capacity of absorption heat pump,COP,auxiliary heat energy consumption and heating capacity of solar energy and so on.Based on established solar-soil source absorption type heat pump system model,this paper has simulated the trend of the change of the heating capacity of absorption heat pump,COP,and heating capacity of solar energy in different division temperatures by changing solar cycle flow and solar collection area of heat and other operating parameters in the system,and gained the matching relationship between the solar collector system,high and low temperature water tank as well as underground soil.This paper has built experimental platform of soil source absorption heat pump system,carried out multi well heat extraction experiment and compared it with the simulation data of the underground heat exchanger model,confirming the reliability of the model.Use the operation parameters optimization of absorption heat pump system checks the system energy balance.Finally,the soil temperature field around the underground pipe has been further studied by using the multi well heat transfer model.