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Heat transfer and pressure drop characteristics of cross stair slit fin.

Number: pap. n. R21, 2261

Author(s) : MATSUDA T., ISHIBASHI A., LEE S., et al.

Summary

The new type of slit fin “Cross Stair Slit Fin” for the outdoor fin-tube heat exchanger has been developed to enhance heat transfer on dry and wet surface condition and restrain heat transfer performance degradation on frost surface condition. The shape of cross stair slit fin was optimized using relationships between air side heat transfer and pressure drop by CFD. The air side heat transfer and pressure drop of 3 different fin shapes (ring, conventional slit, cross stair slit) were measured on dry, wet and frost surface condition. The air side heat transfer of cross stair slit fin on dry and wet surface condition was 10% larger than ring fin and 10% smaller than conventional slit fin. Also, heat transfer performance of cross stair slit fin on frost surface condition was the same as ring fin, and 40% larger than conventional slit fin.

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Pages: 8 p.

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Details

  • Original title: Heat transfer and pressure drop characteristics of cross stair slit fin.
  • Record ID : 30000972
  • Languages: English
  • Source: 2010 Purdue Conferences. 13th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Publication date: 2010/07/12

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