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Frost on a circular tube under heat pump conditions.

[ In Korean. / En coréen.]

Author(s) : YOON S. H., CHO K., CHO H. G., et al.

Summary

This study measured frost on a circular tube to propose the empirical correlation equations. The experimental data showed that the frost thickness at the front and rear ends were larger than those at the other positions. The local frost thickness became uniform as air velocity increased. Correlation equations for the local and average frost thicknesses and frost mass under heat pump condition were proposed. The values predicted by the correlation equations under the freezer condition showed larger by the maximum of 30 to 50% than the values predicted by the present correlation equations under heat pump condition. The applicable ranges of the correlations are 1.0-2.5 m/s for the air velocity, 0.32/7°C for the air temperature, 2.98-4.16 g/kg(DA) for the absolute humidity, and -15/-5°C for the cooling surface temperature.

Details

  • Original title: [ In Korean. / En coréen.]
  • Record ID : 2009-1115
  • Languages: Korean
  • Source: The 3rd Korean Congress of Refrigeration.
  • Publication date: 2009/03/19

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