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

作者：Li, Wei^*; Wu, Zan

来源：International Journal of Heat and Mass Transfer, 2010, 53(9-10): 1967-1976.

DOI：10.1016/j.ijheatmasstransfer.2009.12.059

• Micro-channel
• Saturated-flow boiling
• Heat transfer
• Bond number
• Reynolds number

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.

• 出版日期2010-4
• 单位浙江大学