LAPSE:2022.0017
Published Article
LAPSE:2022.0017
Optimisation of the Geometric Parameters of Longitudinally Finned Air Cooler Tubes Operating in Mixed Convection Conditions
January 24, 2022
The results of optimisation calculations presented in the article are related to longitudinally finned tubes of a heat pump evaporator operating under natural wind-induced flow of outdoor air conditions. The finned surface is characterised by an unusual, wavy fin shape. The article presents the methodology applied to seeking optimal geometric parameters of the finned tube in which thermal calculations were performed by modelling a mixed convection process on the finned surface using the finite volume method. In the case of maximising the heat flow with the minimum mass of the fins, the optimal solution was dominated by the minimum mass of the fins and thus geometric parameters correspond to the number of fins n = 6, fin height h = 0.065 and fin thickness s = 0.0015 m. Optimisation calculations made for maximum efficiency of the exchanger at constant mass indicated that the tube with ten fins (n = 10) with a height of h = 0.11 m and a thickness of s = 0.0018 m allowed maximum heat flow at the assumed mass of the fins in the exchanger tube model. The article proposes a simplified method of determining the optimal geometric parameters of the profile for any mass and maximum thermal efficiency.
Keywords
heat pump evaporator, longitudinal finned tubes, mixed convection, optimisation of geometric parameters
Suggested Citation
Kopeć P, Niezgoda-Żelasko B. Optimisation of the Geometric Parameters of Longitudinally Finned Air Cooler Tubes Operating in Mixed Convection Conditions. (2022). LAPSE:2022.0017
Author Affiliations
Kopeć P: Technical Department, JUKA, 32-005 Niepołomice, Poland
Niezgoda-Żelasko B: Institute of Thermal and Process Engineering, Cracow University of Technology, 31-155 Cracow, Poland [ORCID]
Journal Name
Processes
Volume
9
Issue
1
First Page
pr9010111
Year
2021
Publication Date
2021-01-07
Published Version
ISSN
2227-9717
Version Comments
Original Submission
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PII: pr9010111, Publication Type: Journal Article
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LAPSE:2022.0017
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doi:10.3390/pr9010111
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Jan 24, 2022
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CC BY 4.0
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[v1] (Original Submission)
Jan 24, 2022
 
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Jan 24, 2022
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Original Submitter
Calvin Tsay
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