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ISSN Online: 2377-424X

ISBN Print: 0-85295-345-3

International Heat Transfer Conference 10
August, 14-18, 1994, Brighton, UK

FUNDAMENTAL RESEARCH ON INITIATION OF FREEZING OF SUPERCOOLED WATER ON HEAT TRANSFER SURFACE

Get access (open in a dialog) DOI: 10.1615/IHTC10.1710
pages 121-126

Résumé

In relation to the problem of supercooling for ice storage devices, the effect of the characteristics of the surface was investigated by carrying out a number of experiments using various kinds of heat transfer surfaces, such as silicone, teflon and acryl. These surfaces were selected because the wettability of water was low. The probability of freezing at each degree of supercooling was calculated for each type of surface and was compared with the results obtained previously using 5 kinds of surfaces, namely, electrolytically polished copper surface, gold-plated, nickel-plated, buffed and porous. The results indicate that the probability is highly dependant on the characteristics of the surface. However, by introducing a parameter for each surface, probability distributions fitted onto one curve. Hence, it was concluded that, by applying the method presented in this paper, once the parameter for the surface is known, the probability of ice appearing on any kind of heat transfer surfaces having a certain surface area and a given cooling condition can be predicted for each degree of supercooling.