热电冷联产系统节能性的分析
Exergy analysis of energy conservation for combined cooling heating and power systems
摘要：
利用分析的方法，定义了等效发电效率，对常用热电冷联产系统形式的节能性进行了分析。认为相对于全国平均供电煤耗而言，热电冷联产系统的节能是有条件的，应选取合理的方式，优化设计和运行方案；相对于当前有些热电厂夏季负荷不足的情况，热电冷联产是节能的，在不同的情况下节能率在7.8%~39%之间。建议利用现有的热电联产条件，发展热电冷联产系统，提高现有热电厂的设备利用率和运行经济性。
Abstract：
Applying the exergy analysis method, defines the equivalent generating exergy efficiency. Analyses the energy conservation for common combined cooling heating and power (CCHP) systems. Considers that compared with national average coal consumption for power supply, energy conservation of a CCHP system is conditioned, suitable mode and optimal design and operation scheme should be made; compared with some heat and power plants which are in shortage of heat load in summer, CCHP saves energy. Ratio of energy conservation is 7.8%~39% depending on different conditions. Suggests that a CCHP system should be developed by using existing conditions in order to improve the equipment capacity factor and operation economical efficiency.
Keywords:combined cooling heating and power, energy conservation, exergy analysis, equivalent generating exergy efficiency