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

doi:10.3969/j.issn.1000-1565.2019.01.006

Journal of Hebei University (Natural Science Edition) ›› 2019, Vol. 39 ›› Issue (1): 29-34.DOI: 10.3969/j.issn.1000-1565.2019.01.006

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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

Abstract

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

CLC Number:

TK172

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

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