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A general correlation for evaporative heat transfer in micro/mini-channels

✍ Scribed by Wei Li; Zan Wu

Publisher
Elsevier Science
Year
2010
Tongue
English
Weight
955 KB
Volume
53
Category
Article
ISSN
0017-9310

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✦ Synopsis

Experimental results of the saturated-flow boiling heat transfer in micro/mini-channels for both multiand single-channel configurations were obtained from the literature. The collected database contains more than 3700 data points, covering a wide range of working fluids, operational conditions, and different micro-channel dimensions. The whole database was analyzed by using various existing correlations to verify their respective accuracies. However, none of the existing correlations could predict the data sets precisely. Using the boiling number, Bond number and Reynolds number, a general correlation for evaporative heat transfer in micro/mini-channels was established. In addition, the Bond number in predicting heat-transfer coefficients can be used as a criterion to classify a flow path as a micro-channel or as a conventional macro-channel.

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