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Anonymous Poster

Boiler Water Flow Rate

08/20/2009 3:28 PM

Hi all, Can you pls help me find the water make up flow rate for a 30,000 lb/hr steam boiler that has 30% condensate return? Thanks!
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PWSlack
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#1

Re: Boiler Water Flow Rate

08/21/2009 3:38 AM

It depends upon the blowdown rate, which depends upon the feedwater total dissolved solids and the blowdown total dissolved solids setpoint. Without these, the calculation cannot be done.

Further, the 30,000lb/h is a maximum figure. In reality, the controls on the boiler will be modulating the feedwater rate and the firing rate to maintain steam pressure, and these things will fluctuate with demand.

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