Performance Study on Improved Vacuum Ice Slurry Making Equipment

Shi Jingjing; Liu Daoping; Yu Shoujie; Peng Fuyu

doi:10.3969/j.issn.0253-4339.2012.01.060

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Performance Study on Improved Vacuum Ice Slurry Making Equipment

更新时间：2024-07-18

- Performance Study on Improved Vacuum Ice Slurry Making Equipment
- Journal of Refrigeration Issue 1, (2012)
- 作者机构：
  
  上海理工大学能源与动力工程学院
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0253-4339.2012.01.060
  CLC：
- Published：2012
- 稿件说明：
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Shi Jingjing, Liu Daoping, Yu Shoujie, et al. Performance Study on Improved Vacuum Ice Slurry Making Equipment[J]. Journal of refrigeration, 2012, (1).
DOI：

Shi Jingjing, Liu Daoping, Yu Shoujie, et al. Performance Study on Improved Vacuum Ice Slurry Making Equipment[J]. Journal of refrigeration, 2012, (1). DOI： 10.3969/j.issn.0253-4339.2012.01.060.

摘要

为了降低真空制冰系统对真空度的要求，提出了在水中加入中介物质的方法，并建立了真空蒸发性能测试系统。采用浓度为26%的氨水为中介物质溶液，对真空下溶液的蒸发温度特性进行了实验研究，分析了对系统的影响。实验结果表明，在相同的初始温度和真空条件下，氨水的降温速率和降温范围明显高于蒸馏水，且在高于水的三相点压力时有冰晶形成；随着真空度的降低，氨水的降温幅度逐渐减小，但仍远大于蒸馏水，说明在相同的蒸发温度下，氨水对真空度的要求远低于蒸馏水。

Abstract

To improve the vacuum degree requirement of the vacuum ice slurry making equipment

the intermediary substance was proposed to add to water. A performance test system was established to study vacuum evaporation characteristics experimentally using ammonia water with concentration of 26% as the intermediary substance solution and the influence of ammonia on ice slurry production was analyzed. The results show that the cooling rate and temperature’s drop range of ammonia water are significantly higher than distilled water with the same initial temperature and vacuum degree. Moreover

ice crystal can be formed above the pressure of water’ triple point in ammonia water. With the decrease of vacuum degree

the temperature’s decreasing scope of ammonia gradually diminishes

but still much larger than that of distilled water

which indicates that ammonia water’s requirement for the vacuum degree to achieve the same evaporation temperature is much lower.

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Related Institution

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[1]西安交通大学,西安710049 [2]天津商学院

University of Shanghai for science and Technology

Chinese Association of Refrigeration

China Academy of Building Research Air - condition Institution

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