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Correlation of time dependent recovery from film boiling heat transfer in He II

✍ Scribed by S.W. Van Sciver


Publisher
Elsevier Science
Year
1981
Tongue
English
Weight
360 KB
Volume
21
Category
Article
ISSN
0011-2275

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✦ Synopsis


A correlation is presented that describes the behaviour of time dependent recovery from film boiling in He II. In a one dimensional heat transfer experiment, the recovery time from the film boiling once heat generation stops is observed to be a function of the energy applied to the heater during film boiling. This correlation has a power law dependence which can be physically understood in terms of heat capacity of the heat transfer sample and the film boiling heat transfer coefficient. A direct comparison of experimental data with the analysis is achieved by adjusting the value of the transient film boiling heat transfer coefficient. Data can be predicted to within 20% for recovery under SVP conditions. The results are somewhat less certain for data taken in subcooled He II.


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