
176 Oxygen-Enhanced Combustion
Equation 9.13 shows that if the loss coefcient is equal to
1.0, then the pressure loss through that tting will equal
the velocity pressure of the uid stream, ρV
2
/2. The loss
coefcient is strongly dependent on the geometry of the
obstruction and the Reynolds number. The loss coefcient
for turbulent ow through a few ttings is given in Figure
9.15. For more detailed information on loss coefcients
through various ttings, refer to Idelchik
26
and Crane
technical paper.
27
Example 9.8
Combustion air ows through the entrance of
an eductor system. Compare the pressure drop
through the entrance of a well-rounded i ...