鲁进利*， 吕勇军， 韩亚芳， 钱付平

安徽工业大学建筑工程学院，安徽 马鞍山 243032

收稿日期:2017-11-15修回日期:2018-03-06出版日期:2018-10-22发布日期:2018-10-12
通讯作者:鲁进利

基金资助:安徽省自然科学基金项目;国家自然科学基金

Simulation on convective heat transfer of MPCMS in minichannel heat exchanger based on DPM model

Jinli LU*, Yongjun LÜ, Yafang HAN, Fuping QIAN

School of Civil Engineering and Architecture, Anhui University of Technology, Ma'anshan, Anhui 243032, China

Received:2017-11-15Revised:2018-03-06Online:2018-10-22Published:2018-10-12
Contact:LU Jin-li

摘要/Abstract

摘要： 基于离散相模型，采用颗粒比热容随温度变化分段函数描述颗粒的相变过程，模拟了相变微胶囊悬浮液在细小槽道换热器内的对流传热特性，考察了不同入口流量时换热器进出口压差及温差的变化规律，并与纯水进行比较，分析了换热器内部及加热面温度分布，研究了换热器典型通道修正的局部努赛尔数Nux*沿流动方向的变化规律. 结果表明，相变微胶囊悬浮液在换热器内的压损随流量变化规律与纯水一致，较纯水有所增大；引入相变微胶囊颗粒减缓了加热面和流体温度升高的速率，使换热器出口及加热面的温度比纯水低；受进出口位置影响，换热器内温度呈现中间通道低、向两侧逐渐升高的分布规律. 不同通道的Nux*沿流动方向的变化规律存在一定差异，部分通道内相变材料完全融化，而部分通道内相变材料尚未完全融化就流出换热器. 需改进换热器进出口位置或对换热器内部结构进行优化设计以获得较好的流量分配特性，从而改善换热效果.

引用本文

鲁进利 吕勇军 韩亚芳 钱付平. 细小槽道换热器内相变微胶囊悬浮液对流传热DPM模拟[J]. 过程工程学报, 2018, 18(5): 951-956.
Jinli LU Yongjun Lü Yafang HAN Fuping QIAN. Simulation on convective heat transfer of MPCMS in minichannel heat exchanger based on DPM model[J]. Chin. J. Process Eng., 2018, 18(5): 951-956.

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