Steam Drum PSV Inlet losses

Iomcube · Dec 24, 2021

@

https://www.eng-tips.com/viewthread.cfm?qid=286603

In my openion, since the PSV will be located immediately downstream of reducer, we must consider Total pressure loss since pressure recovery is not possible downstream of reducer.

Facing similar problem:
While calculating pressure losses (unrecoverable) at PSV inlet (must be less than 3%) ...We have a straight line from steam drum nozzle & PSV is attached via reducer. So X3 components friction losses are to be considered. Question is I will include entrance losses at nozzle but will I include exit losses from reducer?

I believe exit losses after reducer will not be included ...because that entails assuming steam is exiting to atmosphere that will be a huge loss abrogating 3% rule

Attaching Katmar AIOFlo image to further my point

Latexman · Dec 24, 2021

Exit losses from reducer - no.

Good Luck,
Latexman

pierreick · Dec 25, 2021

Hi,
Consider the document attached to support your work.
Good luck
Pierre

Iomcube · Dec 25, 2021

Thanks everyone for answering. In case anyone interested I have posted solutions here done using SMATH Studio

https://www.eng-tips.com/viewthread.cfm?qid=490454

Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

Steam Drum PSV Inlet losses

Iomcube

Chemical

Latexman

Chemical

pierreick

Chemical

Iomcube

Chemical

Similar threads

Part and Inventory Search

Sponsor