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Experimental and mechanism analysis of vacuum cooling for high temperature liquid food
Yu Yang1, Tonghua Zou1, Bin Chen2
1Department of mechanical engineering, Tianjin Key Laboratory of Refrigeration Technology, Tianjin University of Commerce, Tianjin, 300134 China.
Abstract:
To minimize the liquid splashing in vacuum cooling, the mass and temperature changes of liquid food were measured by changing the conditions such as the volume ratio of the solution to the container, the pore area, the initial temperature and the terminal temperature, and the effects of different conditions on the ineffective water loss rate were derived from the test results. When the opening area is 1.13cm2, the ineffective water loss rate is the largest. The higher the initial temperature, the smaller the ineffective water loss rate. The terminal temperature is 25 °C, the ineffective water loss rate is the lowest. By exploring the key factors of the splash of liquid droplets in the process of vacuum cooling liquid food, the effect of reducing the splash of liquid droplets in the process of vacuum cooling is realized.
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