Research on heat transfer characteristics and cold trap capacity of a water catcher during vacuum pre-cooling

International Conference on Energy Engineering and Environmental Protection 2016

能源学;生态环境科学

Liu, Enhai^1 ; Liu, Yin^1 ; Wang, Changzhong^2 ; Liu, Shiqi^3

School of Energy and Environment, Zhongyuan University of Technology, Zhongyuan Road 41, Henan Province, Zhengzhou

450007, China^1

Energy Test Center of Industry and Information Technology of Zhengzhou City, Zhengzhou

450007, China^2

Department of Building Engineering, College of Information and Business, Zhongyuan University of Technology, Zhengzhou

450007, China^3

关键词: Cold traps;    Complex Processes;    Cooling Capacity;    Heat and mass transfer;    Heat transfer characteristics;    Heat transfer mechanism;    Pre-cooling;    Wall temperatures;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/52/1/012033/pdf
DOI  :  10.1088/1742-6596/52/1/012033

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Effect of vacuum pre-cooling process on apples was a complex process of heat and mass transfers. The research is based on the physical properties of apples and their heat and mass transfer mechanisms during vacuum pre-cooling. As for the heat transfer characteristics of a water catcher in vacuum pre-cooling, the research studied the heat transfer mechanism and calculated the cold trap capacity by experimental means, and it cold trap capacity were evaluated to supply references for future research into the practical applications of such vacuum pre-cooling techniques. The results provide a theoretical basis for exploring better pre-cooling process conditions and the design of water catchers. The experimental results show that, when the wall temperature of the water catcher is -5°C, the optimal cold trap capacity is about 90.72g and the required cooling capacity is 210.13W in the vacuum pre-cooling of 201.9g of apples.