减湿预冷器对冷藏陈列柜风幕送回风状态的影响分析

张文慧; 龚毅; 吕彦力

doi:10.3969/j.issn.0253-4339.2014.02.111

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减湿预冷器对冷藏陈列柜风幕送回风状态的影响分析

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- 减湿预冷器对冷藏陈列柜风幕送回风状态的影响分析
- Effect of Pre-cooler on Supply and Return Air of Air Curtain in Display Cabinet
- 制冷学报 2014年35卷第2期
- 作者机构：
  
  郑州轻工业学院机电工程学院
- 作者简介：
- 基金信息：
  
  国家自然科学基金（21076200/B060202）资助项目。
- DOI：10.3969/j.issn.0253-4339.2014.02.111
  中图分类号：
- 纸质出版日期：2014
- 稿件说明：
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张文慧, 龚毅, 吕彦力. 减湿预冷器对冷藏陈列柜风幕送回风状态的影响分析[J]. 制冷学报, 2014,35(2).

Zhang Wenhui, Gong Yi, Lu Yanli. Effect of Pre-cooler on Supply and Return Air of Air Curtain in Display Cabinet[J]. Journal of refrigeration, 2014, 35(2).
张文慧, 龚毅, 吕彦力. 减湿预冷器对冷藏陈列柜风幕送回风状态的影响分析[J]. 制冷学报, 2014,35(2). DOI： 10.3969/j.issn.0253-4339.2014.02.111.

Zhang Wenhui, Gong Yi, Lu Yanli. Effect of Pre-cooler on Supply and Return Air of Air Curtain in Display Cabinet[J]. Journal of refrigeration, 2014, 35(2). DOI： 10.3969/j.issn.0253-4339.2014.02.111.

摘要

以双风幕立式敞开式冷藏陈列柜为研究对象，研究减湿预冷器对冷藏陈列柜风幕送回风状态的影响。实验结果表明：在测试环境温度为25℃，相对湿度为60％条件下，冷藏陈列柜使用减湿预冷器后风幕送风温度没有明显变化，回风温度降低5℃；内层风幕的送风相对湿度和回风相对湿度变化不大，外层风幕的送风相对湿度由69%下降至60%；外层风幕的送风焓值基本保持不变，而回风焓值降低21.4%。回风温度和回风焓值的降低都可以有效降低陈列柜负荷。

Abstract

This study focused on a vertical open-type display cabinet with double air curtain

and investigated the effect of pre-cooler on supply and return air of air curtain in display cabinet. The experimental investigation was undertaken in the test room with temperature of 25℃ and relative humidity of 60% to characterize the effect of pre-cooler on supply and return air of air curtain in display cabinet. The results showed that: the temperature of the supply air was not obviously elevated

and the return air temperature was reduced by 5℃; the inner supply air and the return air relative humidity of air curtain changed little

the outer supply air relative humidity dropped from 69% to 60%; and the enthalpy of outer supply air kept a fixed value

and the enthalpy of the return air decreased by 21.4%. The decreases of return air temperature and enthalpy could lead to significant decrease in the display cabinet load.

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