Actually, your explanation wasn't far off your "be the water" surfing that makes the student remember you need to slow down at 90's because e of friction loss. You got complaints on that Casper Milquetoast explanation?
I wasn't offended, for the record. George L. Church, Jr., CET Rowe Sprinkler Systems, Inc. PO Box 407, Middleburg, PA 17842 877-324-ROWE 570-837-6335 fax g...@rowesprinkler.com -----Original Message----- From: sprinklerforum-boun...@firesprinkler.org [mailto:sprinklerforum-boun...@firesprinkler.org] On Behalf Of Sprinkler Academy - C Bilbo Sent: Wednesday, October 26, 2011 6:18 PM To: FORUM Subject: RE: Expansion chamber for anti-freeze Since a couple of folks replied to me off forum, I wanna reach out to Joel and say sorry for my lame attempt at humor. Those really are the steps, just in a way I might not teach them everyday..... . See ya, CB It should be recognized that the above is my opinion as a member of the NFPA, and has not been processed as a formal interpretation in accordance with the NFPA Regulations Governing Committee Projects and should therefore not be considered, nor relied upon, as the official position of the NFSA, the AFSA, the NFPA, nor any of their technical committees. Sincerely, Cecil Bilbo Academy of Fire Sprinkler Technology Champaign, IL 217.607.0325 www.sprinkleracademy.com<http://www.sprinkleracademy.com> ce...@sprinkleracademy.com<mailto:ce...@sprinkleracademy.com> OUR STUDENTS SAVE LIVES!! ---------------------------------------- > From: prodesigngr...@msn.com > To: sprinklerforum@firesprinkler.org > Subject: RE: Expansion chamber for anti-freeze > Date: Wed, 26 Oct 2011 15:26:28 -0500 > > > Dear Joel, > > First you have to determine what kind of antifreeze you are using and then > figure out how much it might grow. Once you figure that out, you gotta do > some really kewl math to determine how large a pressure and a temperature > change you are gonna have. Then you gotta figure out how much air pressure > they are gonna put on the expansion chamber and then you gotta see if all of > those things are gonna work together to make sure yer system don't explode on > itself. > > The book explains all that and gives you a bunch of really kewl formulas to > do the really kewl math with. > > Oh, and don't forget that a couple guys named Boyle and Charles said you > gotta use absolute pressures and temperatures and stuff when you do that. > > But yeah, it's all to make sure that 60psi doesn't turn into more than > 175psi. And yeah.... it's way possible. > > hope this helps some, > > Cecil Bilbo > Sprinkler Dude > ;-) > > > > > > It should be recognized that the above is my opinion as a member of the NFPA, > and has not been processed as a formal interpretation in accordance with the > NFPA Regulations Governing Committee Projects and should therefore not be > considered, nor relied upon, as the official position of the AFSA, the NFSA, > the NFPA, nor any of their technical committees. > > Sincerely, > > > Cecil Bilbo > Academy of Fire Sprinkler Technology > Champaign, IL > 217.607.0325 > www.sprinkleracademy.com<http://www.sprinkleracademy.com> > > ce...@sprinkleracademy.com<mailto:ce...@sprinkleracademy.com> > > > > OUR STUDENTS SAVE LIVES!! > > > > ---------------------------------------- > > From: activefireprotect...@gmail.com > > To: sprinklerforum@firesprinkler.org > > Subject: RE: Expansion chamber for anti-freeze > > Date: Wed, 26 Oct 2011 15:32:33 -0400 > > > > It is my understanding that the purpose of the chamber is to prevent > > excessive pressure which can result in pipe damage, is it possible > > when you have 60 psi in a sprinkler system that thermal expansion > > will increase the pressure to above 175 PSI? > > > > -----Original Message----- > > From: sprinklerforum-boun...@firesprinkler.org > > [mailto:sprinklerforum-boun...@firesprinkler.org] On Behalf Of John > > O'Connor > > Sent: Wednesday, October 26, 2011 3:26 PM > > To: sprinklerforum@firesprinkler.org > > Subject: RE: Expansion chamber for anti-freeze > > > > In a water or antifreeze filled wet system (in service long enough > > to completely absorb all air) and the common practice of using > > backflow preventers, a system subjected to high temperature swings > > will could experience high pressures that cannot be dissipated thru > > a 1/32" hole in a clapper of the check valve. Hence escalating > > pressures and no way to vent same. Pressure chamber does the trick. > > > > John O'Connor > > Nashville TN > > -----Original Message----- > > From: sprinklerforum-boun...@firesprinkler.org > > [mailto:sprinklerforum-boun...@firesprinkler.org] On Behalf Of Joel > > Chaim > > Sent: Wednesday, October 26, 2011 2:13 PM > > To: sprinklerforum@firesprinkler.org > > Subject: Expansion chamber for anti-freeze > > > > Can anybody explain why I would need an expansion chamber for an > > anti-freeze system when there is only 60 psi in the street? > > > > > > > > NFPA does not make a difference for low street pressure. > > > > > > > > -------------- next part -------------- An HTML attachment was > > scrubbed... > > URL: > > <http://fireball.firesprinkler.org/mailman/private/sprinklerforum/at > > tachment s/20111026/53edf952/attachment.html> > > _______________________________________________ > > Sprinklerforum mailing list > > Sprinklerforum@firesprinkler.org > > http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum > > > > ----- > > No virus found in this message. > > Checked by AVG - www.avg.com > > Version: 10.0.1411 / Virus Database: 2092/3975 - Release Date: > > 10/26/11 > > > > _______________________________________________ > > Sprinklerforum mailing list > > Sprinklerforum@firesprinkler.org > > http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum > > > > _______________________________________________ > > Sprinklerforum mailing list > > Sprinklerforum@firesprinkler.org > > http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum > _______________________________________________ > Sprinklerforum mailing list > Sprinklerforum@firesprinkler.org > http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum > _______________________________________________ Sprinklerforum mailing list Sprinklerforum@firesprinkler.org http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum _______________________________________________ Sprinklerforum mailing list Sprinklerforum@firesprinkler.org http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum
