Wall temperature distribution characteristics of flow and heat transfer inside horizontal helically-coiled tube

LU Guoqiang; HAN Jitian; KONG Lingjian; CHEN Changnian; JI Cuilian

doi:10.3969/j.issn.0438-1157.2014.z1.024

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Wall temperature distribution characteristics of flow and heat transfer inside horizontal helically-coiled tube

更新时间：2025-12-10

- Wall temperature distribution characteristics of flow and heat transfer inside horizontal helically-coiled tube
- CIESC Journal Issue S1, Pages: 152-156(2014)
- 作者机构：
  
  山东大学能源与动力工程学院,山东,济南,250061
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0438-1157.2014.z1.024
  CLC： K124
- Online First：30 May 2014，
  
  Published：30 May 2014
- 稿件说明：
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LU Guoqiang, HAN Jitian, KONG Lingjian, et al. Wall temperature distribution characteristics of flow and heat transfer inside horizontal helically-coiled tube[J]. CIESC Journal, 2014, (S1): 152-156.
DOI：

LU Guoqiang, HAN Jitian, KONG Lingjian, et al. Wall temperature distribution characteristics of flow and heat transfer inside horizontal helically-coiled tube[J]. CIESC Journal, 2014, (S1): 152-156. DOI： 10.3969/j.issn.0438-1157.2014.z1.024.

摘要

螺旋管是一种高效换热管型，在卧式螺旋管内流动时受到重力和离心力的作用，工质流动方向时刻改变，产生二次回流，从而表现出了不同于其他管型的流动与传热特性。以卧式螺旋管为研究对象，选取底部截面、上升段截面、顶部截面三个具有代表性的位置截面，采用逐渐增大热通量法研究了其在单相对流和过冷沸腾条件下壁温的分布特性。为螺旋管换热器的设计与应用提供了参考依据。

Abstract

Helically-coiled tube is a kind of high-efficiency heat transfer tube. When fluid flows in horizontal helically-coiled tube it will be affected by gravity and centrifugal forces

and the flow direction changes from time to time

resulting in secondary flow and thus behaving different flow and heat transfer characteristics from those in other tubes. In order to explore the temperature distribution characteristics of the inner tube wall when fluid flows in single phase and under subcooled boiling

the inner tube wall temperatures on the bottom

the rising part and the top cross sections selected in a horizontal helically-coiled tube are experimentally studied by means of increasing the heat flux gradually. Factors which result in these characteristics are explained in detail. The completed work has significance of reference for the design and engineering applications of helically-coiled tube heat exchangers.

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