Temperature rise of He II forced flow and its negative Joule-Thomson effect
CHEN Yu1, JU Yong-lin2, ZHENG Qing-rong3, LU Xue-sheng2, GU An-zhong2
Author NameAffiliation
CHEN Yu College of Mechanical Engineering, Shanghai University of Engineering Science, Shanghai 201620, China, yvettee1976@yahoo.com.cn
JU Yong-lin Institute of Refrigeration and Cryogenics Engineering, Shanghai Jiaotong University, Shanghai 200030, China
ZHENG Qing-rong Marine Engineering College, Jimei University, Xiamen 361021, China
LU Xue-sheng Institute of Refrigeration and Cryogenics Engineering, Shanghai Jiaotong University, Shanghai 200030, China
GU An-zhong Institute of Refrigeration and Cryogenics Engineering, Shanghai Jiaotong University, Shanghai 200030, China
Abstract:
The temperature rise of He II transfer system due to the negative Joule-Thomson (JT) effect is one of the major problems in the He II forced flow system design. Negative Joule-Thomson effect of the He II forced flow was analyzed and calculated in this paper. The temperature rise due to the heat leak along the transfer pipeline was calculated by the simplified equation and was modified by considering the negative Joule-Thomson effect. The modified results were compared with the temperature rise obtained by non-linear differential equations with consideration of the pressure gradient. The results show that the pressure gradient has strong effect on the temperature distribution. The modified results are in good agreement with the values calculated by the complicated equation, which verifies the effectiveness of the simplified equation in calculating the temperature rise when the negative JT effect of He II is known.
Key words: He II Joule-Thomson effect forced flow heat transfer numerical modeling
DOI：10.11916/j.issn.1005-9113.2009.02.023
Clc Number:TN 919.81
Fund:
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Temperature rise of He II forced flow and its negative Joule-Thomson effect
本站小编 哈尔滨工业大学/2019-10-23
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