工程常见输元的特性准则及其计算

Characteristic rules and its calculation of exergy transfer unit

输元是组成灯用传递模型的基本单元。提出三类9项输元特性准则。研究确定传热传递、能量转换传递、传质传递三大类8种典型输元的特性准则,并给出了相应的计算式或表达式,为规范建立基本工程传递模型、简化复杂系统的工程传递分析提供了基础。

Exergy transfer unit is the basic cell of exergy transfer model. Nine characteristic rules of three kinds for exergy transfer unit were put forward in this paper. The characteristic rules for eight typical exergy transfer units of three kinds of exergy transfer including heat transfer, energy conversion and mass transfer were studied and the relative calculating formula or expression were presented. These may provide a basis for standardizing the construction of elementary engineering exergy transfer model and simplifying the engineering exergy transfer analysis of the complicated systems.