不可逆焦耳—布雷顿功热并供系统分析

Exergy Analysis of an Irreversible Joule-Brayton Cogeneration System

对不可逆焦耳—布雷顿功热并供热力循环进行了基本定量分析。建立以系统设计参数为变量的总为目标函数,引入等效温度来计算热回收装置传热过程中的,得出最大无量纲总时功热并供系统的效率,讨论了各参数对系统性能的影响,并用数值分析的方法得到最大无量纲总及其对应的效率与其他参数的优化关系。

This paper gives a fundamental quantitative analysis of the irreversible Joule-Brayton cogeneration system. In the analysis, objective functions of the total produced exergy have been defined as function of the design parameters of the system. An equivalent temperature is defined to model the exergy rate of heat transfer from the heat recovery generator. The exergy efficiency of the cogeneration cycle total exergy at maximum dimensionless are determined and the effects of design parameters on exergrtie performance are investigated. The effects of various cycle parameters on the maximum dimensionless total exergy and the corresponding exergy efficiency have been assessed by numerical analysis.