Some Problems about the Vacuum Cooling Experiments

Hua Zezhao; Song Xiaoyan

doi:10.3969/j.issn.0253-4339.2012.03.054

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Some Problems about the Vacuum Cooling Experiments

更新时间：2024-07-18

- Some Problems about the Vacuum Cooling Experiments
- Journal of Refrigeration Vol. 33, Issue 3, (2012)
- 作者机构：
  
  上海理工大学食品冷冻技术研究所
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0253-4339.2012.03.054
  CLC：
- Published：2012
- 稿件说明：
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Hua Zezhao, Song Xiaoyan. Some Problems about the Vacuum Cooling Experiments[J]. Journal of refrigeration, 2012, 33(3).
DOI：

Hua Zezhao, Song Xiaoyan. Some Problems about the Vacuum Cooling Experiments[J]. Journal of refrigeration, 2012, 33(3). DOI： 10.3969/j.issn.0253-4339.2012.03.054.

摘要

近年来，不少有关真空冷却的文章讨论了用小型真空冷却机组进行的实验研究。其中有些论文在实验设计上可能存在问题，包括实验的对象、样品的数量、真空度、样品的失水量等。因此实验所得到的数据和结论，能否用于指导实际的真空冷却，是需要斟酌的。这里从真空冷却的机理出发，介绍了真空冷却的主要应用场合，讨论了真空腔的压力，食品的降温效率和失水量等问题

并给出了水、菠菜、牛肉、面包的最大理论温降和最小理论失水率。

Abstract

In recent years

some papers have studied the vacuum cooling of food using small experimental devices. However there are some inappropriate measures in these experiments

such as improper food applications

unsuitable sample number of food

inadequate vacuum degree and too much water loss. Therefore

whether the obtained data and conclusions can be applied to actual production still need further consideration. Based on the thermodynamic analyses of vacuum cooling

this paper introduces its main applications

and analyses the vacuum pressure

cooling rate and water loss of foods.

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