ASHRAE Addendum 15c-2000 says to multiply the required relief capacity by a factor of 2.5 if there are combustible materials within 20 ft. Does this only apply to combustible and not flammable materials? If so, why doesn't it apply to flammable materials within 20 ft as well? Wouldn't flammables also contribute to the heat input (thus the required relief rate)…just as combustible materials would?
Thanks in advance for your clarifications.
Full Version: Ashrae Calcs For Mru Relief Devices
QUOTE (Rookie @ Apr 23 2007, 03:58 PM) 
ASHRAE Addendum 15c-2000 says to multiply the required relief capacity by a factor of 2.5 if there are combustible materials within 20 ft. Does this only apply to combustible and not flammable materials? If so, why doesn't it apply to flammable materials within 20 ft as well? Wouldn't flammables also contribute to the heat input (thus the required relief rate)…just as combustible materials would?
Thanks in advance for your clarifications.
Thanks in advance for your clarifications.
Rookie,
Suggest you to check similar post in other Forum...eg.
http://www.eng-tips.com/threadminder.cfm?pid=403
If you found answer to your post, suggest you can create a link to this post for benefits of all...
JoeWong
Thanks Mr. Wong. I've found the answer. It only applies to combustible materials. Go here for more info: http://xp20.ashrae.org/stds/154.htm
QUOTE (Rookie @ May 7 2007, 11:00 AM)
Thanks Mr. Wong. I've found the answer. It only applies to combustible materials. Go here for more info: http://xp20.ashrae.org/stds/154.htm
Rookie,
Good attitude ! Thumbs-up for you...
JoeWong
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