Effects of Tube Diameter and Tubeside Fin Geometry on the Heat Transfer Performance of Air-Cooled Condensers

Hua Sheng  Wang; Hiroshi Honda

doi:10.1615/JEnhHeatTransf.v8.i5.30

Home > Journals > Journal of Enhanced Heat Transfer > Volume 8, 2001 Issue 5 > Effects of Tube Diameter and Tubeside Fin Geometry on the Heat Transfer Performance of Air-Cooled Condensers

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ISSN Print: 1065-5131
ISSN Online: 1563-5074

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Journal of Enhanced Heat Transfer

DOI: 10.1615/JEnhHeatTransf.v8.i5.30
pages 315-327

Effects of Tube Diameter and Tubeside Fin Geometry on the Heat Transfer Performance of Air-Cooled Condensers

Hua Sheng Wang
Department of Engineering, Queen Mary, University of London, London E1 4NS, UK

Hiroshi Honda
Institute of Advanced Material Study, Kyushu University, Kasuga, Fukuoka 816-8580, Japan

ABSTRACT

A theoretical study has been made on the effects of tube diameter and tubeside fin geometry on the heat transfer performance of air-cooled condensers. Extensive numerical calculations of overall heat transfer from refrigerant R410A flowing inside a horizontal microfin tube to ambient air were conducted for a typical operating condition of the condenser. The tubeside heat transfer coefficient was calculated by applying a modified stratified flow model developed by Wang et al. (2000). The numerical results show that the effects of tube diameter, fin height, fin number and helix angle of groove are significant, whereas those of the width of flat portion at the fin tip, the radius of round corner at the fin tip and the fin half tip angle are small.