国际象棋式空气换热器传热特性与阻力特性模拟

doi:10.3969/j.issn.1000-1565.2019.01.006

河北大学学报(自然科学版) ›› 2019, Vol. 39 ›› Issue (1): 29-34.DOI: 10.3969/j.issn.1000-1565.2019.01.006

国际象棋式空气换热器传热特性与阻力特性模拟

刘泽勤^1,2,3,杨贺³,刘哲³

收稿日期:2018-04-20 出版日期:2019-01-25 发布日期:2019-01-25
作者简介:刘泽勤(1961—),男,上海人,天津商业大学教授,博士,主要从事人工环境控制研究. E-mail:liuzeqin@126.com
基金资助:
天津市自然科学基金重点资助项目(13JCZDJC27400)

Simulation research on heat transfer characteristics and resistance characteristics of international chess air heat exchangers

LIU Zeqin^1,2,3,YANG He³,LIU Zhe³

1. Engineering Center of Tianjin Refrigeration Technology, Tianjin University of Commerce, Tianjin 300134, China; 2. Key Laboratory of Tianjin Refrigeration Technology, Tianjin 300134, China; 3. College of Mechanical Engineering, Tianjin University of Commerce, Tianjin 300134, China

Received:2018-04-20 Online:2019-01-25 Published:2019-01-25

摘要/Abstract

摘要： 基于Fluent数值模拟软件计算的方法,本文分别对不同板间距的国际象棋式空气换热器传热和阻力特性进行研究.文中以摩擦因子f、传热因子j以及表面功率因子j/f作为换热器性能的评价指标,探究在满足换热性能要求条件下国际象棋式空气换热器的最优板间距.结果表明:随雷诺数Re的增大,摩擦因子f与传热因子j总体呈现减小趋势;表面功率因子j/f整体呈增大趋势且变化幅度较大.通过对模拟结果进一步分析,板间距为5 mm时,该换热器具有较好的传热特性.

关键词: 国际象棋式空气换热器, 摩擦因子, 传热因子, 表面功率因子

Abstract: The heat transfer and resistance characteristics of the international chess air heat exchangers with different plate spacing are studied by the simulation method of Fluent software. The friction factor f, the heat transfer factor j and the surface power j/f factor are used as the evaluation indexes of the heat exchanger performance, and the optimal plate spacing of the international chess air heat exchanger under the condition satisfying the heat transfer performance is explored. The results showed that the friction factor and heat transfer factorwere decreased with Reynolds number(Re). But the surface power factor j/f had the increasing trend and increased greatly. Through further analysis of the simulation results, it was found that the heat exchanger had better heat transfer characteristics when the plate spacing was 5 mm.

Key words: international chess air heat exchangers, friction factor, heat transfer factor, surface power factor

中图分类号:

TK172

刘泽勤,杨贺,刘哲. 国际象棋式空气换热器传热特性与阻力特性模拟[J]. 河北大学学报(自然科学版), 2019, 39(1): 29-34.

LIU Zeqin,YANG He,LIU Zhe. Simulation research on heat transfer characteristics and resistance characteristics of international chess air heat exchangers[J]. Journal of Hebei University (Natural Science Edition), 2019, 39(1): 29-34.

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国际象棋式空气换热器传热特性与阻力特性模拟

Simulation research on heat transfer characteristics and resistance characteristics of international chess air heat exchangers

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