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.
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
.
DOI: 10.3969/j.issn.1000-1565.2019.01.006
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