Abstract
A new correlation is presented which was verified with a very wide range of data for plain mini and macro channels. The data include 42 fluids (water, halocarbon refrigerants, hydrocarbons, carbon dioxide, ammonia, cryogens, chemicals) in single and multi-channels of diameter 0.38 mm to 41 mm, of various shapes (round, rectangular, triangular), partly or fully heated, in horizontal and vertical orientations. Reduced pressures varied from 0.0046 to 0.787 and mass flux from 15 to 2437 kgm−2s−1. The 10387 data points from 111 sources were predicted with mean absolute deviation (MAD) of 18.8%. The same data were also compared to 17 other correlations. The present correlation was found significantly more accurate than others. The results of this research are presented and discussed.
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