Page 153 - APPLIED PROCESS DESIGN FOR CHEMICAL AND PETROCHEMICAL PLANTS, Volume 1, 3rd Edition

Fluid Flow 139

I

LOW WITH A SALTATION FLOW
TATIONARY BED I[ REGlhAc IJ
IIL
REGIME 0) I
I

HOMOGENEOUS FL

T = 22.5 O C

200 ps= 2.977 gm/crn3
C = 5% by volume
PIPE ID = 0.957 in.

6 7 a 9
MEAN SLURRY VELOCITY, v (ft/sec)

Figure 2-52. Flow regims diagram for solid-water flow in I-in. PVC pipe. By permission, Turian, R. M. and Yuan, T. F., “Flow of Slurries in
Pipelines,” A./.Ch.€. JournaE, vol. 23, 1977, p. 232-243.

where V = specific vcilume steam at return line pressure, Use the factor so calculated just as if read from the
cu ft/lb chart, i.e., in step (8) above.

h, = enthalpy of liquid at suppliy steam pressure,
Btu/lb Example 2-19: Sizing Steam Condensate Return Line
h, = enthalpy of liquid at return line pressure, Btu/lb
A 450 psig steam system discharges 9,425 Ibs/hr of con-
L, = latent heat of evaporation at return line pressure, densate through traps into a return condensate line. The
Btu/lb return header is to discharge into a flash tank held ai 90