Page 228 - Boiler plant and distribution system optimization manual
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Boiler Plant Calculations 213
1445 Btu/lb Steam system average input 22.1 MBtu/hr
Savings ————— = 97% Condensate system pressure Atmospheric
1487 Btu/lb
Condensate return temperature 120F
Make up water temperature 60F
Boiler Efficiency 60F
The recovered steam has 97% of the energy
of the original 100 psig steam.
1. What is the flash loss?
Heat in the condensate on the
high pressure side of the
DISTRIBUTION SYSTEM LOSSES
steam trap 325 Btu/hr
Heat in condensate
The purpose of this section is to illustrate the ma-
atmospheric pressure 180 Btu/lb
jor losses in steam distribution systems.
Latent heat of flash steam @
atmospheric pressure 970 Btu/lb
Distribution system pressure 125 PSIG
Steam system average load 20,000 lb/hr 325-180
Net energy in steam (1193 – 88) 1105 Btu/lb Flash = ———— = 15%
970
Figure 11-6
