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Prediction of pool boiling heat transfer coefficient in ammonia/water mixtures

✍ Scribed by Toshiaki Inoue; Masanori Monde


Publisher
John Wiley and Sons
Year
2009
Tongue
English
Weight
236 KB
Volume
38
Category
Article
ISSN
1099-2871

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✦ Synopsis


A correlation of nucleate pool boiling heat transfer coefficients in ammonia/water mixtures was proposed on the basis of measured heat transfer data on a horizontal heated wire. The correlation was derived using both the fraction difference between vapor and liquid, y 1x 1 , and the temperature difference between dew and bubble points, βˆ†T E . It can predict the heat transfer coefficients of the mixtures during pool boiling within an accuracy of Β±20% over the entire fraction range for heat fluxes below 1000 kW/m 2 , which corresponds to the experimental range performed by Inoue et al. [1]. It was clarified that the coefficients more strongly depend on y 1x 1 than on βˆ†T E for ammonia/water mixtures, while the heat transfer coefficients mainly depend on βˆ†T E for Freon (DuPont's trade name) mixtures.


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