Heat Transfer and Flow Characteristics of Liquid Nitrogen Laminar Fulling Films in Cryogenic Heat Transfer
This paper studies the characteristics of both the dynamic heat and mass transfer of liquid nitrogen thin film which have vital significance to improve heat transfer efficiency and optimize the cryogenic heat exchanger. Liquid nitrogen laminar film flows in the brazed cryogenic heat exchanger with 2.3mm distance between plates. Relationship between the dimensionless thickness and the coefficient of heat convection of liquid nitrogen film is derived. And the impact of rate of vapor content, intensity of interfacial convection heat transfer and Reynolds numbers are calculated and analyzed.
Liquid nitrogen Thin film Cryogenic heat exchanger Efficiency improvement
Zhi Li Zhongmin Li Jun Guo
Hebei Electric Power Design& Research Institution, No. 6 North Jianhua Street, Shijiazhuang, China
国际会议
大连
英文
1514-1518
2011-10-19（万方平台首次上网日期，不代表论文的发表时间）