Heat transfer characteristics of water film flash evaporation in vacuum ice making

JI Jun; ZHANG Xuelai; LIU Xiaowei; WU Yunyun; HAN Zhong; YANG Yang

doi:10.3969/j.issn.0438-1157.2013.04.016

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Heat transfer characteristics of water film flash evaporation in vacuum ice making

更新时间：2025-12-10

- Heat transfer characteristics of water film flash evaporation in vacuum ice making
- CIESC Journal Issue 4, Pages: 1236-1241(2013)
- 作者机构：
  
  上海海事大学商船学院,上海,201306
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0438-1157.2013.04.016
  CLC： K02
- Online First：05 April 2013，
  
  Published：05 April 2013
- 稿件说明：
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JI Jun, ZHANG Xuelai, LIU Xiaowei, et al. Heat transfer characteristics of water film flash evaporation in vacuum ice making[J]. CIESC Journal, 2013, (4): 1236-1241.
DOI：

JI Jun, ZHANG Xuelai, LIU Xiaowei, et al. Heat transfer characteristics of water film flash evaporation in vacuum ice making[J]. CIESC Journal, 2013, (4): 1236-1241. DOI： 10.3969/j.issn.0438-1157.2013.04.016.

摘要

Abstract

A water film flash evaporation vacuum ice-making system is developed.The experiment was carried out to investigate the influence of flash evaporation pressure

thickness and initial temperature of water film on the flash evaporation process.The thickness of the water film was 15

55 and 75 mm.Initial temperature of water film ranged from 2℃ to 10℃

and flash evaporation pressure varied from 100 Pa to 600 Pa.The characteristics of the flash evaporation process were recorded using a CCD camera of the visualization system.The experimental results show that under the operating conditions

lower flash evaporation pressure leads to faster change of water film temperature at constant initial temperature of water film.Higher initial temperature of water film makes the water film temperature varies more quickly at constant pressure.As water film thickness increases

the decrease rate of water film temperature reduces.Based on the experimental results

a correlation for water film temperature with flash evaporation pressure

thickness and initial temperature of water film is presented with the maximum error of 24.19%.

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