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Join Date: Aug 2014
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Engery Changes in Pressure Reducing Desuperheater Valves (PRDs)

08/12/2015 1:53 AM

How energy is changes by PRDS.

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#1

Re: Engery changes in Pressure Reducing Desuperheater Valvles(PRDS)

08/12/2015 1:55 AM

Almost zero.

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#3
In reply to #1

Re: Engery changes in Pressure Reducing Desuperheater Valvles(PRDS)

08/13/2015 10:02 AM

Steam from high Press and hight Temp is coming down to Low Press and Low Temp but Energy changes is Zero,How? Is it the BFW water coming into play to conserve energy.Anyways..Thank u Tornado

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#2

Re: Engery changes in Pressure Reducing Desuperheater Valvles(PRDS)

08/12/2015 2:26 AM

Will probably have something to do with Enthalpy and what's in the steam tables.

(ups I almost said Mildred)

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#4

Re: Engery Changes in Pressure Reducing Desuperheater Valves (PRDs)

08/31/2015 11:38 AM

You're injecting high temperature high pressure (superheated) steam into low temperature low pressure water, or vice versa. The steam drops in temperature and pressure, the water rises in temperature and pressure; energy is conserved, not changed.

Why do you think the BFP (Boiler Feed Pump) is involved aside from providing the work to move the fluid around? It was a good interview question, how did you answer it?

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arvindkr20 (1); IdeaSmith (1); RAMConsult (1); Tornado (1)

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