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Heat transfer characteristic of finned-tube heat exchangers with different clearance between fin collar and tube surface.

Author(s) : PARK Y., JEONG Y., LEE J., et al.

Summary

Finned-tube heat exchangers are often made with aluminium fins and copper tubes. Usually the contact between fin collar and tube surface for finned tube heat exchanger is secured by mechanical expansion of the tubes. The objective of the present study is to apprehend how much effect clearance has on the performance of heat exchanger. This effect is studied using an experimental approach. The thermal fluid measurements are made using a psychometric calorimeter. Frontal air velocity varies in the range from 1.0 to 3.0 m/s. The heat transfer rate of sample which has bigger clearance is only 27% compare with the other's in dry condition. Under wet conditions, its heat transfer rate is 78% compared with the others.

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Pages: pp. 109-114

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Details

  • Original title: Heat transfer characteristic of finned-tube heat exchangers with different clearance between fin collar and tube surface.
  • Record ID : 2010-0732
  • Languages: English
  • Source: ACRA-2009. The proceedings of the 4th Asian conference on refrigeration and air conditioning: May 20-22, 2009, Taipei, R.O.C.
  • Publication date: 2009/05/20

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