内燃机联产双源系统的敏感性和变工况特性  

Sensitivity & Part-load Performances of Internal Combustion Engine Dual Source System

作　　者：王锡[1] 杨勇平[1] 宋之平[1] 徐二树[1] 

机构地区：[1]电站设备状态监测与控制教育部重点实验室(华北电力大学),北京市昌平区102206

出　　处：《中国电机工程学报》2010年第20期22-27,共6页Proceedings of the CSEE

基　　金：国家自然科学基金项目(50606010);教育部科学技术研究重点项目(107119)~~

摘　　要：基于分布式能量系统的双源可逆型空调系统作为一个独立运行的冷热供应系统,不仅有分布式系统的优点,而且产品单一可避免电上网的问题。对内燃机联产双源系统进行了深入的分析,由敏感性分析结果可知,热泵的循环性能系数(coefficient of performance,COP)和发电效率对双源系统性能影响很大。根据典型内燃机变工况的计算方法和对热泵考虑输入功率的影响,以及对余热型溴化锂机组考虑余热温度的影响,得出双源系统的变工况特性,与其它供热/冷系统比较可知,双源系统的供能能力比土壤源热泵机组和直燃型溴化锂机组要优越;因此,认为内燃机联产双源系统有很大节能潜力,值得推广。The dual source air-conditioning system（DSACS） based on distributed energy system（DES） can perform cooling or heating independently.It has the DES＇s advantages,and can avoid the problem of interconnecting with public power grid because it has only one product.The performance of internal-combustion engine dual-source system was full studied.The sensitivity analysis of DSACS showed that its efficiency is influenced remarkably by the heat pump＇s coefficient of performance（COP） and the generating efficiency.Then,the DSACS off-design performance was analyzed by utilizing the typical analytical solution of internal combustion engine,and by considering variation of input power of heat pump and the heat source temperature of waste heat lithium bromide water chiller/heater.The DSACS has a better off-design performance compared to the performances of ground source heat pump and direct-fired lithium bromide water chiller/heater.Consequently,DSACS is a worthy and remarkable energy saving system.

关 键 词：内燃机 土壤源热泵 溴化锂机组 敏感性分析 变工况 节能 

分 类 号：TK019[动力工程及工程热物理]