Flow characteristics experiment of plate-fin heat exchanger in wind tunnel

ZHAO Bo; CHEN Zhenhua; LI Weimin; CHEN Jiming; ZHU Bo; WEN Qian

doi:10.11729/syltlx20210081

Volume 36 Issue 1

Mar. 2022

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Journal of Experiments in Fluid Mechanics > 2022 > 36(1): 69-76. > DOI: 10.11729/syltlx20210081

ZHAO B，CHEN Z H，LI W M，et al. Flow characteristics experiment of plate-fin heat exchanger in wind tunnel[J]. Journal of Experiments in Fluid Mechanics, 2022，36（1）：69-76.. DOI: 10.11729/syltlx20210081

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Flow characteristics experiment of plate-fin heat exchanger in wind tunnel

ZHAO Bo^{1, 2,},
CHEN Zhenhua²,
LI Weimin²,
CHEN Jiming^{1, 2, ,},
ZHU Bo²,
WEN Qian²

1.
State Key Laboratory of Aerodynamics, China Aerodynamics Research and Development Center, Mianyang　621000, China
2.
Facility Design and Instrumentation Institute, China Aerodynamics Research and Development Center, Mianyang　621000, China

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Received Date: August 01, 2021
Revised Date: November 17, 2021
Accepted Date: November 17, 2021

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Abstract

Abstract

The flow characteristics of a plate-fin heat exchanger in the wind tunnel were studied. Firstly, the turbulence characteristics and pressure loss of the plate-fin heat exchanger and the finned oval tube heat exchanger were compared, and then the turbulence developments downstream of the heat exchanger under different inflow wind speeds and spoiler angle conditions were studied by experiments. Finally, the impacts of typical structures on the flow disturbance downstream of the heat exchanger were obtained. The results show that the plate-fin heat exchanger has less disturbance to the air flow and much smaller pressure loss under the same heat transfer condition than the finned oval tube heat exchanger. The plate-fin heat exchanger has good rectifying effect, and the flow disturbance, which has little relation with the incoming flow conditions, is mainly determined by its own structures. The disturbance of the large thickness structures in the heat exchanger propagates long distances, and a proper rectifier scheme is needed to reduce the disturbance.
- wind tunnel,
- plate-fin heat exchanger,
- flow characteristics,
- turbulence intensity,
- experimental research

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References

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