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http://dx.doi.org/10.5394/KINPR.2006.30.1.113

An Experimental Study on Frost Generation Mechanism from Evaporator Tube in Air Conditioning System  

Park Sang-Kyun (National Korea Maritime University)
Oh Cheal (Division of Marine engineering system, National Korea Maritime University)
Abstract
The object qf this experiment was the evaluation of the growth rate of frost layer conditioned by inlet air's velocity, temperature and relative humidity on the copper tube in evaporator. In this experiment, the inlet air's velocity were $0.3^m/_s,\;0.6^m/_s,\;0.9^m/_s,$ temperature were $15^{\circ}C,\;20^{\circ}C,\;25^{\circ}C$ and the variation of relative humidity was $70\%~90\%$. And the brine temperature flowing through the copper tubes was kept $-15{\circ}C$ because generally cooling temperature range is constantly $-15^{\circ}C$ in the heat exchanger for air conditioning system It was found that the amount of frost generation increased so that the relative humidity, velocity and temperature of supply air increased.
Keywords
Evaporator; Frost layer; Relative humidity;
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  • Reference
1 Tao, Y. X., Mao, Y., and Besant, R. W. (1994), 'Frost Growth Characteristics on Heat Exchanger Surlaces', HTD-Vol. 286, 'Fundamentals of Phase changes: Sublimation and Solidification', ASME, pp.28-38
2 Lee, Y. B., Ro, S. T., 'An experimental study of frost forming on the horizontal cylinder under cross flow', 공기조화 냉동공학 논문집 11호 제 4권 pp. 448-456, 1999   과학기술학회마을
3 Shaerif, S. A., Raju, S. P., Paclki, M. M., and Chan, A. B.(1993), 'A Semi-emoirical Transient Method for Modeling Frost Formation on a Flat Plate', Rev Int, Froid, Vol. 16, 5, pp. 321-329   DOI   ScienceOn
4 Yonko, J. D., Sepsy, C. F.(1976), 'An investigation of the thermal conductivity of frost while forming on a flat horizontal plate', ASHRAE Trans. Vol. 73, Part 1, pp.1.1-1.11