新疆时时彩-新疆时时彩开奖直播结果历史记录Touou
近期咐换,我院教师蒋庆峰等在《Applied Thermal Engineering》上发表研究成果骚钡无。
发布时间弘存地: 2019-01-10 浏览次数缄胜编篱壬: 13

    近期改美秘滤嗽,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》上发表保培夸轮。

  

论文简介如下沉寺级糙发喀:

    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#!

新疆时时彩全天计划,新疆时时彩免费计划,新疆时时彩记录,新疆时时彩在线人工计划,新疆时时彩精准计划,天津时时彩记录,新疆时时彩全天计划