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.

摘要：

运用热力过程分析理论，对微型分布式冷热电联产系统的户式示范工程的典型工况进行热力过程分析。其中的夹点分析（PA）理论对系统中的换热网络（HEN）进行了最优化的改进设计，换热网络的改进能实现最小公用事业这一能量目标以及相应的经济目标。在夹点分析的基础上，进一步运用分析，对微型冷热电联产系统的能量梯级利用原理展开讨论，并结合热机与热泵的热力学特性，得出它们在换热网络系统中最佳的设置方法。通过热力过程最优分析及其再设计，改进后的分布式冷热电联产系统获得了更佳的热力学性能与经济效益。