DRYOUT CHARACTERISTICS IN HORIZONTAL HELICALLY COILED TUBE

Feng Ziping; Guo Liejin; Chen Xuejun and Sun Jufeng(National Laboratory of Multiphase Flout in Power Engineering) (Xian Jiantong University; Xian 710049)

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DRYOUT CHARACTERISTICS IN HORIZONTAL HELICALLY COILED TUBE

更新时间：2025-12-16

- DRYOUT CHARACTERISTICS IN HORIZONTAL HELICALLY COILED TUBE
- CIESC Journal Issue 2, (1997)
- 作者机构：
  
  西安交通大学动力工程多相流国家重点实验室,西安交通大学动力工程多相流国家重点实验室,西安交通大学动力工程多相流国家重点实验室,西安交通大学动力工程多相流国家重点实验室西安710049,西安710049,西安710049,西安710049西安高等航空技术专科学校热能工程系
- 作者简介：
- 基金信息：
- DOI：
  CLC： Q050
- Online First：25 April 1997，
  
  Published：25 April 1997
- 稿件说明：
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Feng Ziping, Guo Liejin, Chen Xuejun and Sun Jufeng(National Laboratory of Multiphase Flout in Power Engineering) (Xian Jiantong University, et al. DRYOUT CHARACTERISTICS IN HORIZONTAL HELICALLY COILED TUBE[J]. CIESC Journal, 1997, (2).
DOI：

Feng Ziping, Guo Liejin, Chen Xuejun and Sun Jufeng(National Laboratory of Multiphase Flout in Power Engineering) (Xian Jiantong University, et al. DRYOUT CHARACTERISTICS IN HORIZONTAL HELICALLY COILED TUBE[J]. CIESC Journal, 1997, (2). DOI：

摘要

在中低压条件下

对卧式放置螺旋管中汽-水两相流烧干特性进行了实验研究

探讨了螺旋管内烧干机理。结果表明

卧式螺旋管内烧干主要受二次回流及沿烧干点的热扩散作用控制。烧干首先在管圈出口处发生

然后再扩展到上游。在同一截面上

烧干首先在管圈前侧和后侧发生。在实验基础上

给出了卧式螺旋管临界干度计算式。

Abstract

A study of the dryout characteristics in forced convection boiling in electrically heated horizontal helically coiled tube is reported. The results demonstrate that dryout usually occurs at the front (θ= 90°)and back side (θ= 270°) of the exit cross - section. The secondary flow induced by centrifugal force and the wall heat conduction around the dryout points are the dominant mechanisms of dryout in a helically coiled tube. Based on the experimental data

a correlation for predicting the critical dryout quality of horizontal helically coiled tube is proposed.

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