| The water source heat pump system in recent years of application in China,it can develop soon ease energy-supply,is one kind has broad prospects for development of air conditioning technology,but in parts of this area without considering the actual situation,the existence of certain phenomenon.This task will be underground water-source heat the air conditioning system as the research object,this paper discusses the ground source heat pump air conditioning system at home and abroad,the application and research actuality,technical characteristics,and its development trend.The source heat pump air conditioning system unit classification and working principle of comparative discussion,introduces three kinds of energy consumption and the economic analysis method and principle of evaluation criteria,the economic evaluation model was introduced,and the annual cost calculation method.Analyzed the water source&heat pump energy principle of water source heat pump performance,the main factors affecting the water inlet temperature and lateral(water temperature air terminal)is analyzed,and the underground water source&heat pump + capillary network system as an example,the operation of the system are analyzed,and the energy analysis shows that the combination of two will greatly improve the water source&heat pump system(can)value COP.Choose a project in Anshan as an example,this paper makes a comprehensive water source heat pump air conditioning system design,and underground hydrogeology survey report for this project,including a list of underground water source heat pump air conditioning system,three different kinds of cold and heat sources,combined with shenyang area,using electrovalence annual cost method,from the capital,annual operating system cost of three aspects of cold and heat source,the economic analysis results show:The underground water source heat pump system and steam absorption chiller system,screw water chillers system,its annual cost compared respectively,saves the five lowest,22.6%.The project adopts the underground water source&heat pump system is the most economical.The underground water source heat pump system in initial investment cost in proportion to the scheme,the initial investment than conventional screw water chillers,but in the same high targeting the heating season,refrigeration season total load conditions,the underground water source&heat pump system in operation cost for screw water chillers,71.3 per cent in the air conditioning system maintenance cost,and thus the basic equal underground water source&heat pump system of the annual cost for screw water chillers air-conditioning system,the annual cost about one year after 77.3%time can be part of the initial investment cost savings from the annual operation cost and years in maintenance costs. |