Effects of Experimental Parameters on Condensation Heat Transfer in Plate Fin Heat Exchanger

Sung-Hoon Seol, Sun-Geun Lee, Chang-Hyo Son, Ji-Hoon Yoon, In-Seob Eom, Young-Min Park and Jung-In Yoon
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Sung-Hoon Seol: Department of Refrigeration and Air-Conditioning Engineering, College of Engineering, Pukyong National University, Busan 48513, Korea
Sun-Geun Lee: Department of Refrigeration and Air-Conditioning Engineering, College of Engineering, Pukyong National University, Busan 48513, Korea
Chang-Hyo Son: Department of Refrigeration and Air-Conditioning Engineering, College of Engineering, Pukyong National University, Busan 48513, Korea
Ji-Hoon Yoon: Department of Refrigeration and Air-Conditioning Engineering, College of Engineering, Pukyong National University, Busan 48513, Korea
In-Seob Eom: R&D Center, DongHwa Entec, Busan 46742, Korea
Young-Min Park: R&D Center, DongHwa Entec, Busan 46742, Korea
Jung-In Yoon: Department of Refrigeration and Air-Conditioning Engineering, College of Engineering, Pukyong National University, Busan 48513, Korea

Energies, 2021, vol. 14, issue 22, 1-18

Abstract: This study aims to provide an experimental investigation and comparison of the condensation heat transfer characteristics in a plate–fin heat exchanger (PFHE). The heat flux, mass flux, and saturation pressure were adjusted as experimental parameters to verify the effects on the condensation heat transfer. In addition, condensation heat transfer correlation of two-stream PFHEs was provided based on the experimental data for utilization as a design reference for the heat exchanger. The turbulence is the most influential in heat transfer. One of the ways to foster turbulence is to increase shear stress. The higher flow velocity results in the higher shear stress. That was why increasing mass flux or the flow with higher vapor quality showed the higher heat transfer coefficient (HTC). Refrigerant properties such as viscosity and specific volume of vapor changed according to the saturation pressure. It is expected they affect the degree of turbulence too in similar manners. The mass flux was more influential than the heat flux and saturation pressure. Thus, the equivalent mass flux of the refrigerant is dominant in the derived correlation model. The average difference between experimental and calculated HTC from correlations was about 6.5%. Multi-stream PFHE comprises an additional heat transfer surface, which implies a more active droplet formation. The average pressure drop in the multi-stream is 15% larger than that of the two-stream.

Keywords: condensation heat transfer; heat transfer correlation; Wilson plot method; plate–fin heat exchanger (PFHE); multi-stream PFHE (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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