The present study measured frost pattern on a circular tube to propose empirical correlation equations for the local and average frost thickness, frost density and frost mass. The key parameters were diameter of the circular tube (7mm, 20mm), cooling surface temperature of the circular tube, absolute humidity of air, air temperature, and air velocity. A 50% ethylene glycol aqueous solution was applied as a coolant. The effect of the air temperature was smaller parameters for the frost formation than the other parameters. The frost thicknesses at both front and rear of the tube were larger than those at the other parts, while they became higher with increasing the diameter of the circular tube. The local frost thicknesses at high air velocity were more uniform than those at low air velocity. The values predicted by the correlation under the freezer condition showed larger by the maximum of 30∼50% than the measured data under heat pump condition. The empirical correlations for the local and average frost thickness and frost mass were proposed. The empirical correlations for the local and average frost thickness, frost density and frost mass were proposed, and they agreed with the literatures within 10%.
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ASME 2009 International Mechanical Engineering Congress and Exposition
November 13–19, 2009
Lake Buena Vista, Florida, USA
Conference Sponsors:
- ASME
ISBN:
978-0-7918-4382-6
PROCEEDINGS PAPER
Frost Thickness Variation on a Circular Tube Under Heat Pump Condition
Yoon Suk Lee,
Yoon Suk Lee
Sungkyunkwan University, Suwon, Republic of Korea
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Shin Hyuk Yoon,
Shin Hyuk Yoon
Sungkyunkwan University, Suwon, Republic of Korea
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Keumnam Cho,
Keumnam Cho
Sungkyunkwan University, Suwon, Republic of Korea
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Gaku Hayase
Gaku Hayase
Samsung Electronics Co., Ltd., Suwon, Republic of Korea
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Yoon Suk Lee
Sungkyunkwan University, Suwon, Republic of Korea
Shin Hyuk Yoon
Sungkyunkwan University, Suwon, Republic of Korea
Keumnam Cho
Sungkyunkwan University, Suwon, Republic of Korea
Gaku Hayase
Samsung Electronics Co., Ltd., Suwon, Republic of Korea
Paper No:
IMECE2009-10887, pp. 2007-2014; 8 pages
Published Online:
July 8, 2010
Citation
Lee, YS, Yoon, SH, Cho, K, & Hayase, G. "Frost Thickness Variation on a Circular Tube Under Heat Pump Condition." Proceedings of the ASME 2009 International Mechanical Engineering Congress and Exposition. Volume 9: Heat Transfer, Fluid Flows, and Thermal Systems, Parts A, B and C. Lake Buena Vista, Florida, USA. November 13–19, 2009. pp. 2007-2014. ASME. https://doi.org/10.1115/IMECE2009-10887
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