Dynamic Flash of Ice Slurry Making under the Influence of Ultrasound

Jia Xiaoya; Zhang Xuelai; Wang Zhangfei; Zheng Qinyue; Chen Yue; Han Xingchao; Gan Wei

doi:10.3969/j.issn.0253-4339.2019.01.065

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Dynamic Flash of Ice Slurry Making under the Influence of Ultrasound

更新时间：2024-07-18

- Dynamic Flash of Ice Slurry Making under the Influence of Ultrasound
- Journal of Refrigeration Vol. 40, Issue 1, (2019)
- 作者机构：
  
  上海海事大学蓄冷技术研究所
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0253-4339.2019.01.065
  CLC：
- Published：2019
- 稿件说明：
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Jia Xiaoya, Zhang Xuelai, Wang Zhangfei, et al. Dynamic Flash of Ice Slurry Making under the Influence of Ultrasound[J]. Journal of refrigeration, 2019, 40(1).
DOI：

Jia Xiaoya, Zhang Xuelai, Wang Zhangfei, et al. Dynamic Flash of Ice Slurry Making under the Influence of Ultrasound[J]. Journal of refrigeration, 2019, 40(1). DOI： 10.3969/j.issn.0253-4339.2019.01.065.

摘要

基于闪蒸理论，设计了一套超声波作用下动态闪蒸制备冰浆的实验装置。研究了同一真空度下不同超声波功率、喷射流量及不同质量浓度的乙醇添加对冰浆真空动态闪蒸特性的影响。结果表明：与无超声波作用相比，超声波对增大水的闪蒸强度作用明显；流量一定时，降温降压速率随超声波功率的增大而增大，较高的超声功率有助于增强水的闪蒸强度，有利于动态制冰；而同一超声功率下随着流量的增大最终平衡压力也越高。较大流量不利于闪蒸的持续进行；乙醇添加剂能促进溶液降温，质量浓度越高，温度降得越低；质量浓度为5%时，可消除溶液过冷度，更利于产生冰晶。

Abstract

According to the theory of flash evaporation

an experimental apparatus was designed for a water-dynamic vacuum flash under the influence of ethanol and ultrasound. The effects of the different rates of ultrasonic power

flow rate

and ethanol concentration were investigated. The experimental results show that compared with the flash evaporation without ultrasound

ultrasound exhibited an obvious effect on the flash enhancement. Furthermore

the depressurization and cooling-down rates were increased with the enhancement of the ultrasound

and a higher ultrasonic power rate was conducive to the dynamic flash and improving the ice-making efficiency. Further

the final stable pressure was increased with the increase in the flow rate under the same ultrasonic power. A large flow rate was not conducive to the continuous process of flash vaporization. Ethanol additives could make the solution temperature be decreased below 0 ?C

and the higher the concentration was

the lower the temperature was. Adding 5% ethanol was more favorable for ice crystal production

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