Aren't Darcy calcs a bit counterintuitive? We want to make sure the pressure is sufficient to expel the antifreeze so we run calcs making everything more demanding which means adding even more antifreeze that we need to get rid of if there's a fire???
On Wed, Jun 12, 2013 at 11:23 AM, Brad Casterline <[email protected]>wrote: > Thanks Roland, John again, and Ron again. > > This post is for adjusting the K-Factor for fluid properties other than > water at ~40F, 62.4 lb/ft3, not for 'pure' water flowing through an area > that varies a couple hundredths of a square foot. See 13-2007, > A.22.4.4.5.1, > which, if deleted in later editions, would be shame. > Thanks to everyone again. > Brad > > > -----Original Message----- > From: Ron Greenman [mailto:[email protected]] > Sent: Wednesday, June 12, 2013 12:39 PM > To: [email protected] > Subject: Re: adjusting the K-Factor with our bare hands > > And the anti-freeze is out of the flowing part of the system rather quickly > and thereafter has no effect. > > > On Wed, Jun 12, 2013 at 8:03 AM, John Denhardt < > [email protected] > > wrote: > > > I was trying to be nice! Roland did state what the thought was of most > of > > the committee. > > > > John > > > > John August Denhardt, P.E., FSFPE > > Strickland Fire Protection Incorporated > > 5113 Berwyn Road > > College Park, Maryland 20740 > > Office Telephone Number: 301-474-1136 > > Mobile Telephone Number: 301-343-1457 > > FIRE SPRINKLERS SAVE LIVES - Can you live without them? > > > > > > -----Original Message----- > > From: [email protected] [mailto: > > [email protected]] On Behalf Of Roland > > Huggins > > Sent: Wednesday, June 12, 2013 11:03 AM > > To: [email protected] > > Subject: Re: adjusting the K-Factor with our bare hands > > > > To restate John's comment a little more bluntly, the requirement to > > adjust the K-factor for antifreeze solutions was deleted the following > > edition because it created an insignificant difference considering the > > approximate nature of our overall methodology and especially the assigned > > average value for the K-factor. In other words, it was a dumb thing to do > > in the first place. If any one is interested in the details, I provided > an > > extensive explanation along with the proposal so check the old ROP/ROC. > > > > > > Roland Huggins, PE - VP Engineering > > American Fire Sprinkler Assn. --- Fire Sprinklers Saves Lives > > Dallas, TX > > http://www.firesprinkler.org > > > > > > > > > > > > On Jun 11, 2013, at 12:56 PM, Brad Casterline <[email protected]> > > wrote: > > > > > Thanks Matt and Ron. I appreciate ALL feedback. > > > I like posting numbers because there is no opinion, personal feelings, > > > hearsay, etc. I know a ton about D-W and H-W, and I do not need to > repeat > > > the Velocity of Efflux experiments of the early 1600's to know I am > > correct > > > about K-Factors. Would it be too much to ask of you to simply work a > few > > of > > > the numbers that back up the concepts I post, BEFORE I get your > > Criticisms > > > and Opinions? Either that or YOU show ME how it is done- adjusting > > K-Factors > > > I mean, from NFPA 13 referenced earlier? > > > > _______________________________________________ > > Sprinklerforum mailing list > > [email protected] > > > > > > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org > > _______________________________________________ > > Sprinklerforum mailing list > > [email protected] > > > > > > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org > > > > > > -- > Ron Greenman > Instructor > Fire Protection Engineering Technology > Bates Technical College > 1101 So. Yakima Ave. > Tacoma, WA 98405 > > [email protected] > > http://www.bates.ctc.edu/fireprotection/ > > 253.680.7346 > 253.576.9700 (cell) > > Member: > ASEE, SFPE, ASCET, NFPA, AFSA, NFSA, AFAA, NIBS, WSAFM, WFC, WFSC > > They are happy men whose natures sort with their vocations. -Francis Bacon, > essayist, philosopher, and statesman (1561-1626) > _______________________________________________ > Sprinklerforum mailing list > [email protected] > > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org > > _______________________________________________ > Sprinklerforum mailing list > [email protected] > > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org > _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
