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Posted by Kevin DiLuigi on November 22, 2011 at 20:09:47:
In Reply to: Boiler press vs line press posted by howdy on October 28, 2011 at 10:17:10:
: Our plant operates the boilers at 100 psi. After the steam leaves the boiler it is then reduced down to 60 psi prior to entering the steam distributuion line. Steam does travel about 2 1/2 miles with feed branchs off the main into buildings throughout the length. My question is why is the boiler operated 40 psi above the line pressure. Advantages? Disadvantages?
Your superheating the steam in opposite fashion then how it is normally done. By lower the pressure without reducing the heat the steam is above it's boiling point. It can now drop in temperature through pipe travel without forming water. Less loss at the end.
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