对数平均温差

基于对<2-4>及<2-6>型分流式换热器基本方程的解析解，给出了温度效率P和对数平均温差修正系数F的计算公式。

Based upon analytical solutions of governing equations for heat transfer in 2-4 , 2-6 split flow heat exchangers , the expressions for the temperature efficiency P and LMTD correction factor F are presented .

计算流体对数平均温差和换热面积的解析式

Analytical formulas for logarithmic mean temperature difference and heat - exchange area

对数平均温差法计算制冷冷凝器和蒸发器的合理性分析

Analysis on the rationality of LMTD method applied in calculation of refrigeration condensers and evaporators

提出了单蛇型系统的对数平均温差法设计方法，并用数值模拟法和实验法进行了验证。对双回型系统通过数值模拟法得到了不同工况下的有效散热量。

We expound the logarithm-average temperature design method to the single S pattern heating system , and verify it though experiment .

通过分析说明，用对数平均温差法计算制冷冷凝器和蒸发器是不合理的。

The rationality of LMTD method applied in calculation of refrigeration condensers and evaporators is analyzed and proved to be unfit for the case .

本文讨论表面式蒸发器管路内热流密度计算，以改进传统的对数平均温差法。

This article discusses the calculation of heat flux in the evaporator , in order to improve the conventional logarithmic mean temperature difference method .

传统的对数平均温差-浓度差法在传热传质同时进行的情况下缺乏理论基础，并且在处理溶液过冷度时遇到困难。

The traditional evaluation method based on log-mean-temperature and concentration difference is criticized for its lack of theoretical basis when simultaneous heat and mass transfer process occurs .

推导过程无需假定冷热流体的特定流向，并利于得到对数平均温差同侧相减的规律。

In the deducing process , no specific flow mode is presupposed , and the conclusion of temperature subtracting by the same side for logarithmic mean temperature difference can be easily drawn .

根据换热器对数平均传热温差校正因子与换热器进出口温度之间的关系，指出了单壳程偶数管程换热器在可操作条件下的最大温度交叉程度。

According to the relationship between the logarithmic mean temperature difference correction factor and the inlet and outlet temperatures of the exchanger , the maximum temperature cross extent of the exchanger which has single shell and even tube pass at the operable condition is pointed out .