太阳能热泵热水系统辅助热源热经济分析  

Thermal Economic Analysis of Auxiliary Heat Source of Solar-Assisted Heat Pump Water Heating System

作　　者：穆振英[1] 由世俊[1] 

机构地区：[1]天津大学环境科学与工程学院,天津300072

出　　处：《天津大学学报》2010年第11期995-1002,共8页Journal of Tianjin University(Science and Technology)

基　　金："十一五"国家科技支撑计划资助项目(2006BAJ04A15)

摘　　要：采用内燃发动机驱动的热泵作为太阳能热泵热水系统的辅助热源,从热力学和经济性两个方面对适合系统辅助热源使用的燃料进行了研究.定义了折算性能系数的概念,并用其衡量能量利用效率.确定了自变量,并分析了其对折算性能系数和一次能源利用率的影响,确定了自变量的影响度.研究表明,提高发动机和发电机效率,并回收利用发动机的余热是提高系统辅助热源能量利用率的根本措施.引入寿命周期费用法研究系统辅助热源的燃料费用,针对办公楼、住宅和宾馆3种典型建筑分析了燃料热值和价格对寿命周期费用的影响.综合考虑一次能源利用率和寿命周期费用,在不考虑燃料获取难度的前提下,得出在现阶段的条件下系统辅助热源应优先选用沼气和天然气作为其燃料的结论.An internal combustion engine-driven heat pump（ICEDHP） system is used as the auxiliary heat source of the solar-assisted heat pump water heating（SAHPWH） system.From both the thermodynamic and economic aspects,the suitable fuels for usage in the auxiliary heat source are studied.The concept of performance conversion coefficient is defined,which can be used to measure energy utilization efficiency.The effects of variables on performance conversion coefficient and PER were analyzed,and the impact degree of variable was identified.The result indicates that improving the efficiency of engine and generator and waste heat recycling of the engine is the fundamental measure to improve the energy utilization efficiency of the auxiliary heat source.The life-cycle cost（LCC）method was used to study the fuels cost of the auxiliary heat source.In connection with three typical constructions,as office,residence and hotel,the effects of fuel calorific value and price on LCC were analyzed.Considering primary energy ratio（PER） and LCC,the conclusion was drawn that marsh gas,natural gas and dimethyl ether have priority in using for the auxiliary heat source.

关 键 词：太阳能热泵热水系统 辅助热源 热经济分析 折算性能系数 影响度 寿命周期费用 

分 类 号：TU831.3[建筑科学—供热、供燃气、通风及空调工程]