Page 155 - Industrial Ventilation Design Guidebook

43 HEAT AND MASS TRANSFER i t 7

TABLE 4.9 Heat Transfer Correlations for Internal Flow

TABLE 4.10 Constants for TABLE 4.11 Constants for
External Flow Correlation External Flow Correlation

C m C m
Re rf Re d
0.4-4 0.989 0.33 1-400 0.75 0.4
4-400 0.911 0.385 400-1000 0.51 0.5
3
40-4000 0.683 0.466 10 -2xl0 5 0.26 0.6
s
4000-40 000 0.193 0.618 2xlO -10 6 0.076 0.7
40 000-400 000 0.027 0.805

Flow Past a Horizontal Pipe