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Flash Tank Sizing Standard 2

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hadams417

Mechanical
Joined
May 10, 2005
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Location
US
Does anyone know any information pertaining to sizing Flash Tanks for steam systems. I am wondering if there is a standard that I must adhear to or if sizing a Flash Tank is simply left up to what the distributer's specs call for.

Thanks for any help.
 
I believe that there are, at least, two resources. One is ASHRAE HANDBOOK, and other is one North Amercia Valve Vendor's handbook. As I am out of home country for the business, sorry for no further detailed information available.
 
Just checked with some files in my laptop, it is recommended that you refer to S10.14 of ASHRAE HANDBOOK.
 

You could try the Canadian Boiler, Pressure Vessel and Pressure Piping Code B51-97, Part 1
 
hadams...

The people at Penn separator have always been helpful to me


They offer sized systems based on the boiler capacity, pressure and expected blowdown rate.

I had some ancient ASME papers, from the 1940's on this topic.....developed by a former Stone & Webster Vice president.....I had 'em......but I lost them

I am aware of no recent engineering textor article on this subject.

MJC
 
An internet source for flash tank sizing is:


One of the more important governing factors is the limiting of the upflow velocity of the steam vapor to prevent entrainment of moisture droplets.

There is a good discussion of this issue in another forum in this site, so you might try a search in Eng-tips.

rmw
 
rmw -

Your internet link was quite helpful. The National Board of Boiler and Pressure Vessel inspectors provides a document called "A Guide for Blowoff Vessels" where they identify a good target velocity for the steam vapor of 11 ft/sec to allow for proper seperation.


Im not having any luck locating the discussion you made reference to (I'm rather new on this website) and I was hoping you could point me more in the right direction. Thank again for your help.


_________________________________
Henry B. Adams, III
Clemson University, ME Undergrad
Spirax Sarco Inc.
 
Try thread124-125547

rmw
 
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