Single-phase heat transfer and pressure drop in the micro-fin tubes with coiled wire insert

被引：39

作者：

Naphon, P ^{[1
]}

Sriromruln, P ^{[1
]}

机构：

[1] Srinakharinwirot Univ, Dept Mech Engn, Fac Engn, Ongkarak 26120, Nakhon Nayok, Thailand

来源：

INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER | 2006年 / 33卷 / 02期

关键词：

heat transfer characteristics; pressure drop; micro-fin tube; coiled wire insert;

D O I：

10.1016/j.icheatmasstransfer.2005.08.012

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The heat transfer characteristics and the pressure drop of the horizontal double pipes with and without coiled wire insert are investigated. The inner and outer diameters of the micro-fin tube are 8.92 and 9.52 mm, respectively. The coiled wire is fabricated by bending a 1-mm-diameter iron wire into the coil wire with coil diameter of 7.80 mm. Cold and hot water are used as working fluids in shell side and tube side, respectively. The test runs are performed at the cold and hot water mass flow rates ranging between 0.01 and 0.07 kg/s and between 0.04 and 0.08 kg/s, respectively. The inlet cold and hot water temperatures are between 15 and 20 degrees C and between 40 and 45 degrees C, respectively. The results obtained from the micro-fin tube with coiled wire insert are compared with those obtained from the smooth and micro-fin tubes. (c) 2005 Elsevier Ltd. All rights reserved.

引用

页码：176 / 183

页数：8

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