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近期颂莽拆姥,我院教师蒋庆峰等在《Applied Thermal Engineering》上发表研究成果趁泡短棠棉。
发布时间彻惭陕许: 2019-01-10 浏览次数阔死爸巫: 13

    近期频亩逞搂惶些,我院蒋庆峰老师等的“Thermal hydraulic characteristics of cryogenic offset-strip fin heat exchangers”研究成果在《Applied Thermal Engineering》上发表囱盘杆暮勾扁。

  

论文简介如下促矾构膝:

    Plate-fin heat exchangers are essential in large-sized helium liquefiers/refrigerators. However, studies on the general fin performance data and applicable fin selection strategies at low temperatures have rarely been conducted. In this paper, the thermal-hydraulic characteristics of cryogenic helium flowing through offset-strip fins were investigated by experiments and simulations. Through the comparative means, the variation tendencies of fin surface performance at different temperature conditions were also revealed. The results showed, for j factors, the heat transfer performance deteriorated gradually with the decrease of temperature. For f factors, the values increased slightly at low temperatures, and they intended to increase more dramatically at smaller Re numbers. Additionally, sensitivity analysis revealed that, for the optimal object of volume quality, the selection of Re number, fin space and thickness deserved more attention, so that the designed heat exchanger could achieve sufficient heat transfer in compact space.

本文下载地址:https://www.sciencedirect.com/science/article/pii/S1359431118365086?dgcid=author#!

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