Supercooling degree of ethanol solution under action of porous media

ZHANG Xuelai; LI Yue; WANG Youli

doi:10.11949/j.issn.0438-1157.20160463

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Supercooling degree of ethanol solution under action of porous media

更新时间：2025-11-26

- Supercooling degree of ethanol solution under action of porous media
- CIESC Journal Issue 12, Pages: 4976-4982(2016)
- 作者机构：
  
  上海海事大学蓄冷技术研究所,上海,201306
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20160463
  CLC： K02
- Online First：05 December 2016，
  
  Published：05 December 2016
- 稿件说明：
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ZHANG Xuelai, LI Yue, WANG Youli. Supercooling degree of ethanol solution under action of porous media[J]. CIESC Journal, 2016, (12): 4976-4982.
DOI：

ZHANG Xuelai, LI Yue, WANG Youli. Supercooling degree of ethanol solution under action of porous media[J]. CIESC Journal, 2016, (12): 4976-4982. DOI： 10.11949/j.issn.0438-1157.20160463.

摘要

为了研究多孔介质对乙醇溶液过冷度的影响，实验搭建了不同孔隙率和不同热导率的多孔介质的实验系统，通过改变乙醇溶液浓度探究了浓度对过冷度的影响，通过改变孔隙率和热导率探究强化换热方法。数据的处理采用统计学的方法，每种工况下实验32次。结果表明：多孔介质的孔隙率和热导率对乙醇溶液过冷度有影响；随着孔隙率的减小和热导率的增加，平均过冷度值减小，过冷度稳定性增强；高浓度对减小过冷度作用明显，浓度越高，过冷度平均值和最大值越小，而浓度的变化对稳定性影响较小。

Abstract

In order to study the effects of porous media on supercooling degree of ethanol solution

the experimental system of porous media with different porosities and thermal conductivities was built. The effect of ethanol concentration on the supercooling degree was investigated by changing the ethanol concentration. The method of heat transfer enhancement was explored by changing the porosity and thermal conductivity of porous media. The data were processed by statistical method and the experiment at each condition was repeated 32 times. The experimental results showed that the porosity and thermal conductivity of porous media had effects on the supercooling degree of ethanol solution. With decreasing porosity and increasing thermal conductivity

the average supercooling degree decreased

and the stability was improved. High concentration had obvious effect on decreasing the supercooling degree. The higher the concentration

the lower the average value and the maximum value of supercooling degree

while the change of concentration had little effect on the stability of supercooling degree.

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