封闭腔水膜闪蒸汽液界面瞬态传质系数的实验研究

严俊杰; 张丹; 邓炜; 郭迎利

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封闭腔水膜闪蒸汽液界面瞬态传质系数的实验研究

专题研究 | 更新时间：2025-12-08

- 封闭腔水膜闪蒸汽液界面瞬态传质系数的实验研究
- Experimental Investigation of the Instantaneous Mass Transfer Coefficient at Steam-Liquid Interface During Water Film Flash Evaporation in Closed Chamber
- 西安交通大学学报 2008年42卷第5期页码：515-518+541
- 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,710049
- 作者简介：
- 基金信息：
  
  : 2007-09-23. 作者简介: 严俊杰(1967-),男,教授,博士生导师. 基金项目: 教育部新世纪优秀人才支持计划资助项目(NCETO04O0940)
- DOI：
  中图分类号： TK124
- 网络首发：2008-05-10，
  
  纸质出版：2008
- 稿件说明：
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严俊杰, 张丹, 邓炜, 等. 封闭腔水膜闪蒸汽液界面瞬态传质系数的实验研究[J]. 西安交通大学学报, 2008,42(5):515-518+541.

严俊杰, 张丹, 邓炜, et al. Experimental Investigation of the Instantaneous Mass Transfer Coefficient at Steam-Liquid Interface During Water Film Flash Evaporation in Closed Chamber[J]. 2008, 42(5): 515-518+541.
严俊杰, 张丹, 邓炜, 等. 封闭腔水膜闪蒸汽液界面瞬态传质系数的实验研究[J]. 西安交通大学学报, 2008,42(5):515-518+541. DOI：

严俊杰, 张丹, 邓炜, et al. Experimental Investigation of the Instantaneous Mass Transfer Coefficient at Steam-Liquid Interface During Water Film Flash Evaporation in Closed Chamber[J]. 2008, 42(5): 515-518+541. DOI：

摘要

以膜渗透理论为依据

通过搭建水膜闪蒸实验台

对水膜闪蒸汽液界面的瞬态传质系数进行了实验研究.实验中液膜厚度为0.02～0.10 m

过热度为10～20 ℃

真空腔压力为0.005～0.015 MPa.结果表明

实验条件下界面传质系数的变化范围为0.08～16.77 m/s.在相同条件下

该系数随初始过热度或初始液膜厚度的增大而减小.闪蒸过程中

该传质系数随液膜厚度的减小或真空腔压力的升高而迅速减小.

Abstract

On the basis of the membrane penetration theory

an experimental investigation of the instantaneous mass transfer coefficient at the steam-liquid interface during water film flash evaporation was conducted. The range of the height and the superheat of water film

and the pressure of water in the vacuum chamber was 20-100 mm

10-20 ℃

and 0.005-0.015 MPa

respectively. The results show that the mass transfer coefficient varies from 0.08 m/s to 16.77m/s under the experimental conditions. The coefficient decreases with the increase of the initial superheat or the initial height of water film. However

during the flash evaporation

the instantaneous mass transfer coefficient decreases quickly with the decrease of the height of water film or the increase of the pressure in the vacuum chamber.

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Keywords

references

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王桂芳. 水膜闪蒸特性的实验研究[D]. 西安:西安交通大学能源与动力工程学院,2007.

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