Page 249 - Boiler plant and distribution system optimization manual
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234 Boiler Plant and Distribution System Optimization Manual
Figure 12.6—Feedwater preheater used to control cold end corrosion in the economizer
and acid dew point n the stack. The steam energy used for heating is not lost as it recy-
cles back into the boiler as heat in the feedwater.
Figure 12.7. Relationship be-
tween initial water vapor dew
point of flue gasses and the ex-
cess air level.
