An unmixed-air flow model of a spiral coil cooling dehumidifying unit

被引：24

作者：

Ho, JC ^{[1
]}

Wijeysundera, NE ^{[1
]}

机构：

[1] Natl Univ Singapore, Dept Mech & Prod Engn, Singapore 117548, Singapore

来源：

APPLIED THERMAL ENGINEERING | 1999年 / 19卷 / 08期

关键词：

heat exchanger; spiral coil; dehumidification; unmixed air flow;

D O I：

10.1016/S1359-4311(98)00091-X

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

A spiral coil heat exchanger consisting of a number of horizontal layers of spirally wound, finned tubes connected to vertical manifolds at the inner and outermost turns of each coil has been studied. A theoretical model predicting the thermal performance of the spiral coil heat exchanger as a cooling and dehumidifying unit has been developed based on the assumption that the air is unmixed as it flows past each spiral coil turn. Experiments on a laboratory model of the spiral coil unit were conducted and the results obtained confirmed the theoretical predictions. Performance charts of enthalpy effectiveness and humidity ratio effectiveness vs Ntu suitable for air-handler unit design have also been presented. (C) 1999 Elsevier Science Ltd. All rights reserved.

引用

页码：865 / 883

页数：19

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