| 超声波作用下动态闪蒸制备冰浆 |
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| 引用本文： | 贾潇雅,章学来,王章飞,郑钦月,陈跃,韩兴超,甘伟.超声波作用下动态闪蒸制备冰浆[J].制冷学报,2019,40(1):65-70+127. |
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| 作者姓名： | 贾潇雅 章学来 王章飞 郑钦月 陈跃 韩兴超 甘伟 |
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| 作者单位： | 上海海事大学蓄冷技术研究所,上海海事大学蓄冷技术研究所,上海海事大学蓄冷技术研究所,上海海事大学蓄冷技术研究所,上海海事大学蓄冷技术研究所,上海海事大学蓄冷技术研究所,上海海事大学蓄冷技术研究所 |
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| 基金项目： | 国家自然科学基金（51376115）资助项目。 |
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| 摘 要： | 本文基于闪蒸理论,设计了一套超声波作用下动态闪蒸制备冰浆的实验装置。研究同一真空度下不同超声波功率、喷射体积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;体积流量一定时,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体积流量的增大最终平衡压力也越高。较大体积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。
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| 关 键 词： | 真空 冰浆 乙醇溶液 超声波 流量 过冷度 |
| 收稿时间： | 2017/11/9 0:00:00 |
| 修稿时间： | 2018/2/9 0:00:00 |
Dynamic Flash of Ice Slurry Making under the Influence of Ultrasound |
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| Jia Xiaoy,Zhang Xuelai,Wang Zhangfei,Zheng Qinyue,Chen Yue,Han Xingchao and Gan Wei.Dynamic Flash of Ice Slurry Making under the Influence of Ultrasound[J].Journal of Refrigeration,2019,40(1):65-70+127. |
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| Authors: | Jia Xiaoy Zhang Xuelai Wang Zhangfei Zheng Qinyue Chen Yue Han Xingchao and Gan Wei |
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| Affiliation: | Institute of Cool Thermal Storage Technology, Shanghai Maritime University,Institute of Cool Thermal Storage Technology, Shanghai Maritime University,Institute of Cool Thermal Storage Technology, Shanghai Maritime University,Institute of Cool Thermal Storage Technology, Shanghai Maritime University,Institute of Cool Thermal Storage Technology, Shanghai Maritime University,Institute of Cool Thermal Storage Technology, Shanghai Maritime University and Institute of Cool Thermal Storage Technology, Shanghai Maritime University |
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| 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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