火电厂换热器火积耗散分析

Analysis of Entransy Dissipation in Heat Exchanger of Power Plant

基于描述热量传递能力的物理量———火积,定义了评价换热器传热性能的火积耗散原理。同时,推出了换热器火积耗散的公式,并且通过代入数据计算,得出了火电厂各级加热器的火积耗散,并进行分析,对优化换热器的性能有一定的指导作用。

In the present work, based on the description of the physical quantity of heat transfer ability- entransy, define the entransy dissipative principle of heat exchanger performance evaluation. At the same time, introduced the formula of entransy dissipation in the heat exchanger,and the caculation has been conducted with the data, then get and analysis the entransy dissipation in heat exchangers of all levels in power plant. It has some help for optimization the performance of the heat exchanger.