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International Standard Serial Number:
ISSN 1001-4551
Sponsor:
Zhejiang University;
Zhejiang Machinery and Electrical Group
Edited by:
Editorial of Journal of Mechanical & Electrical Engineering
Chief Editor:
ZHAO Qun
Vice Chief Editor:
TANG ren-zhong,
LUO Xiang-yang
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Simulation on characteristics of louveredfin type heat exchanger in airflow maldistribution
HAI Ying1,CHEN Jingyu1, LI Wengui2
(1. School of Electrical and Mechanical Engineering, University of Jiaxing,Jiaxing 314001, China;
2. Zhejiang Jiaxing Cooler Co.Ltd., Jiaxing 314001, China)
Abstract: Aiming at the flow and thermal performance of louveredfin heat transfer, experimental study on the heat transfer with two different configurations (single and threescreen mode) were carried out on a wind tunnel test rig. The parameters of heat transfer and flow with nonuniform inlet flow conditions were measured experimentally, these served to determine the heat transfer correlation for the fin type using the distributed parameter model and the Wilson plot method. Numerical simulation was established, to predict the thermal performance of heat exchangers in nonuniform flow conditions. The results show that a drop of up to 8.2% is found in the overall heat transfer coefficient for nonuniform flow profile. Some calculated results are verified by the experimental datas, which show they are reasonable.The numerical code can be used as a design tool to develop more efficient heat exchangers.
Key words: heat exchanger;airflow maldistribution;experiment;numerical simulation