热量(火用)和冷量(火用)的符号规则及统一计算方法

Sign Rule and Unified Calculation Method for both Heat Exergy and Cold Exergy

当前在有效能分析的基础理论中,对于热量和冷量的符号没有明确定义或从不同的角度给出了不同的定义,导致对于热量和冷量的计算形成了各不相同的计算方法,在有效能分析的概念上产生了一定的混乱。本文对热量和冷量的各种不同的计算方法进行了分析与讨论,论述了这些不同计算方法存在的问题,提出了热量和冷量的符号法则及其相应的统一计算方法。

In the current fundamental theory of exergy analysis, the signs of heat exergy and cold exergy are either not clearly defined or defined from different perspectives. Different definitions lead to different calculation method for heat exergy and cold exergy, which causes confusion in analyzing the concept of ex- ergy. This paper analyzes and discusses some calculation methods of heat exergy and cold exergy, demon- strates their problems, and proposes a new sign rule and corresponding unified calculation method for both heat exergy and cold exergy.