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awaiscnpp
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Join Date: Jun 2011
Posts: 30

What Is Effect On Condenser Vaccum,If Two Ejector Take Into Service Parallel?

01/15/2012 11:27 AM

we have 3 stage ejector.if two ejector take into service in parallel,what effect on vacuum?
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SolarEagle
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Join Date: Mar 2007
Location: by the beach in Florida
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#1

Re: what is effect on condenser vaccum,if two ejector take into service parallel?

01/15/2012 11:35 AM

This should help...

http://www.cheresources.com/ejectors.shtml

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PWSlack
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United Kingdom - Member - Indeterminate Engineering Fields - Control Engineering - New Member

Join Date: Jan 2007
Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on.
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#2

Re: What Is Effect On Condenser Vaccum,If Two Ejector Take Into Service Parallel?

01/16/2012 3:51 AM

It depends.

What are the fluids involved, their temperatures and pressures?

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mahesh_4754
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Location: mumbai, maharashtra, india
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#3

Re: What Is Effect On Condenser Vaccum,If Two Ejector Take Into Service Parallel?

01/17/2012 12:31 PM

certainly your vacuum will reduce :)
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salmancnpp82
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Join Date: Jan 2012
Posts: 1
#4

Re: What Is Effect On Condenser Vaccum,If Two Ejector Take Into Service Parallel?

01/18/2012 12:21 PM

vacuum in steam condenser(absolute pressure) = partial pressure of air +partial pressure of steam.

in winter in steam condenser there is only partial pressure of air.

yes there is a little bit vacuum increased when taking two ejectors in service when cooling water temperature of condenser and ejector is high.this occur in summer.

in winter when cooling water temperature of condenser and ejector is too low than vacuum increased much more.

take both ejector in service only in summer.in winter one and half.hi hi vacuum effect on turbine.
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Mukesh0861
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Join Date: Dec 2010
Posts: 377
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#5

Re: What Is Effect On Condenser Vaccum,If Two Ejector Take Into Service Parall

01/20/2012 11:05 AM

In three stage ejector if you intend to two ejectors in parallel, just think over the condition of down stream condensor. The back pressure will reduce the ejector's efficiency drastically. Hence over all system will get disturbed to poor efficiency and poor vacuume.
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Anonymous Poster #1
#6

Re: What Is Effect On Condenser Vaccum,If Two Ejector Take Into Service Parallel?

01/21/2012 12:21 PM

less the vacuum effect more on the flow capacity
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Anonymous Poster (1); mahesh_4754 (1); Mukesh0861 (1); PWSlack (1); salmancnpp82 (1); SolarEagle (1)

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