Journal
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
Volume 53, Issue 9-10, Pages 1967-1976Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijheatmasstransfer.2009.12.059
Keywords
Micro-channel; Saturated-flow boiling; Heat transfer; Bond number; Reynolds number
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Funding
- National Natural Science Foundation [50976096]
- National High Technology Research and Development of China [2007AA05Z226]
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This paper presents a general criterion to classify a channel as micro-channel or macro-channel. Experimental results of saturated-flow boiling heat transfer in micro/mini-channels for both multi- and single-channel configurations were obtained from the literature. The collected database contains 4228 data points, covering a wide range of working fluids, operational conditions. and different micro-channel dimensions. Seven existing correlations were evaluated against the database to verify their respective accuracies. A combined non-dimensional number Bo (*) Re-1(05) = 200 was introduced as the new conventional-to-micro/mini-channel criterion In addition, a generalized prediction method was proposed based on the new criterion, with accurate predictive capability. (C) 2009 Elsevier Ltd. All rights reserved
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