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Experimental Study on Thermal Hydraulic Performance of Plate-Type Heat Exchanger Applied in EngineWaste Heat Recovery

机译:板式换热器热力性能在发动机废热回收中的实验研究

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摘要

This paper experimentally investigates the thermal hydraulic characteristics for three types of fluid on plate heat exchanger surfaces. The three types of fluid are R245fa, glycol and water. The characteristics of heat transfer coefficient Nu and friction factor f are given. The concept of pump power is provided to overall evaluate the enhanced heat transfer. The dimensionless correlation equations of Nu and f factors are provided using multiple regression method. The mean absolute errors for the Nu and f factor are 9.7 and 6.8% in the whole test range.
机译:本文通过实验研究了板式换热器表面上三种流体的热工水力特性。三种类型的流体是R245fa,乙二醇和水。给出了传热系数Nu和摩擦系数f的特性。提供了泵功率的概念,以总体评估增强的热传递。使用多元回归方法提供Nu和f因子的无量纲相关方程。在整个测试范围内,Nu和f因子的平均绝对误差为9.7和6.8%。

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