Experimental Study on Heat Transfer and Pressure Drop of Micro-Sized Tube Heat Exchanger

被引：0

作者：

王秋香 ^{[1
]}

戴传山 ^{[1
]}

机构：

[1] Key Laboratory of Efficient Utilization of Low and Medium Grade Energy of Ministry of Education,Tianjin University

来源：

Transactions of Tianjin University | 2014年 / 01期

关键词：

micro-sized tube heat exchanger; heat transfer; pressure drop; entrance effect;

D O I：

暂无

中图分类号：

TK124 [传热学]; TK172 [换热设备];

学科分类号：

摘要：

A micro-sized tube heat exchanger(MTHE) was fabricated, and its performance in heat transfer and pressure drop was experimentally studied. The single-phase forced convection heat transfer correlation on the sides of the MTHE tubes was proposed and compared with previous experimental data in the Reynolds number range of 500—1 800. The average deviation of the correlation in calculating the Nusselt number was about 6.59%. The entrance effect in the thermal entrance region was discussed. In the same range of Reynolds number, the pressure drop and friction coefficient were found to be considerably higher than those predicted by the conventional correlations. The product of friction factor and Reynolds number was also a constant, but much higher than the conventional.

引用

页码：21 / 26

页数：6

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