CORRELATIONS FOR SATURATED CRITICAL HEAT FLUX IN MICROCHANNELS

被引：0
|
作者：
Wu, Zan [1 ]
Li, Wei [1 ]
机构：
[1] Zhejiang Univ, Dept Energy Engn, Hangzhou 310027, Zhejiang, Peoples R China
来源：
PROCEEDINGS OF THE ASME INTERNATIONAL HEAT TRANSFER CONFERENCE - 2010, VOL 6: MICROCHANNELS, NANO, NANOFLUIDS, SPRAY COOLING, POROUS MEDIA | 2010年
关键词：
Microchannel; Boiling number; Saturated critical heat flux (CHF); Length-to-diameter ratio; Exit quality; 2-PHASE PRESSURE-DROP; WATER; PREDICTION; MODEL;
D O I：
暂无
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Experimental results of the saturated-flow boiling critical heat flux (CHF) in microchannels for both multi- and single-channel configurations were obtained from the literature. The collected database contains 629 data points, covering 5 refrigerants, nitrogen, and water, for a wide range of operational conditions, and different micro-channel dimensions. The whole database was analyzed by using four empirical correlations to verify their respective accuracies. However, none of the existing correlations could predict the entire database precisely. A saturated CHF correlation was proposed by using boiling number, length-to-diameter ratio, and exit quality. The new correlation can predict the overall micro-channel database accurately on the whole. It predicts almost 97.0% of the nonaqueous data (except R12 data points located in the macro-scale region) and 94.0% of the water data within the +/- 30% error band.
引用
收藏
页码：89 / 98
页数：10
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