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Frost properties on cold surface simple geometries.

Number: pap. C1-052

Author(s) : LEE Y. S., YOON S. H., HAYASE G., et al.

Summary

This study experimentally investigated the frost patterns on simple geometries such as flat plate and circular tube to propose the empirical correlation equations for the local and average frost thickness, frost density and frost mass of frosted evaporator of the heat pump. The key test parameters were air temperature from 0 to 7°C, absolute humidity of air from 2.98 to 4.16 g/kgDA, air velocity from 1.0 to 2.5m/s, and surface temperature of the flat plate from -5 to -15°C. The coolant was 50% ethylene-glycol aqueous solution. The empirical correlations under the heat pump condition in the present study predict more accurately than the other correlations that are available in the literatures. The proposed correlation for the frost thickness agreed with the measured data within 5%, while the proposed correlation for the frost mass agreed with the measured data within 10%.

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Pages: 6 p.

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Details

  • Original title: Frost properties on cold surface simple geometries.
  • Record ID : 30005145
  • Languages: English
  • Source: ACRA2010. Asian conference on refrigeration and air conditioning: Tokyo, Japan, June 7-9, 2010.
  • Publication date: 2010/06/07

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