Abstract:

Integrated process technologies, including pinch analysis (PA)and exergy analysis, are applied to analyze a micro distributed combined cooling heating and power (CCHP)system.Based on typical operation performance of this dwelling CCHP application, retrofit of the heat exchanger network (HEN)is made by optimization design of PA.With further combination of PA and exergy analysis, the cascade in CCHP system is demonstrated.Combined with thermodynamic characteristics of heat machine and heat pump, their placement in HEN is clarified.These optimization principles direct the retrofit of the micro distributed CCHP system, which results in the achievement of both energy utilization and economical targets.