K equals q over radical p Wait a minute- are you serious? Branchlines, and entire systems, have K factors, not just sprinkler heads. Anything with a flow and a pressure, like a system demand, can be converted to a K factor.
Example- a system with 100 gpm at 100 psi demand at FF. Q=1000 p=100 so the K factor is 100. If you only had 80 psi to the system, then 894 PSI would discharge out of the flowing heads, since you'd take the sq root of 80 x the K factor, as if it were a sprinkler head. If you had a k factor of 35 for a rack system (250 gpm at 50 psi) with a demand pressure at junction point of roof A.S. where the more demanding roof system needed 100 PSI, then you'd adjust the flow of the rack system increase by taking the square root of the roof system's higher pressure 100 Psi (SqRt=10) times the Kfactor of 35 to see the increased flow in the rack system would be 350 GPM instead of 250 as a standalone, unbalanced. In LPlain Text and without resorting to wordcad, that's the best I can do remembering hand calcs in the 70's and 80's. glc -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Matthew J. Willis Sent: Thursday, May 22, 2008 2:44 PM To: [email protected] Subject: RE: Its tough getting old What's a "K" factor?? Matthew J. Willis Living Water Fire Protection, LLC. 1160 McKenzie Rd. PO Box 877 Cantonment, FL. 32533 850-937-1850 Voice 850-937-1852 Facsimile [EMAIL PROTECTED] ----- >-----Original Message----- ----- >From: [EMAIL PROTECTED] ----- >[mailto:[EMAIL PROTECTED] On ----- >Behalf Of Eckard, Mark - Mark E ----- >Sent: Thursday, May 22, 2008 1:29 PM ----- >To: [email protected] ----- >Subject: RE: Its tough getting old ----- > ----- > ----- >The adjusted flow equals the flow of the leg with the ----- >lowest pressure times the square root of the lowest ----- >pressure over the higher pressure. ----- >Then add the adjusted flow to the higher flow ----- >requirement for the total flow required at the higher pressure. ----- > ----- > ----- >-----Original Message----- ----- >From: [EMAIL PROTECTED] ----- >[mailto:[EMAIL PROTECTED] On ----- >Behalf Of George Church ----- >Sent: Thursday, May 22, 2008 1:44 PM ----- >To: [email protected] ----- >Subject: RE: Its tough getting old ----- > ----- >Wow- remember determining the K factors and multiplying ----- >the lower pressure one by the higher pressure and ----- >therefore you get the higher flows balanced at the ----- >higher pressure demand point? ----- > ----- >Move over, cobwebs, trying to recall kRadicalQ.../ glc ----- > ----- >-----Original Message----- ----- >From: [EMAIL PROTECTED] ----- >[mailto:[EMAIL PROTECTED] On ----- >Behalf Of Matthew J. ----- >Willis ----- >Sent: Thursday, May 22, 2008 1:33 PM ----- >To: [email protected] ----- >Subject: RE: Its tough getting old ----- > ----- >You flow them One at the time. Then balance at the point ----- >they come together. ----- >Then you flow both to ensure they will work together. ----- > ----- >R/ ----- > ----- >Matt ----- > ----- >Matthew J. Willis ----- >Living Water Fire Protection, LLC. ----- >1160 McKenzie Rd. ----- >PO Box 877 ----- >Cantonment, FL. 32533 ----- >850-937-1850 Voice ----- >850-937-1852 Facsimile ----- >[EMAIL PROTECTED] ----- > ----- > ----- >----- >-----Original Message----- ----- >----- >From: [EMAIL PROTECTED] ----- >----- >[mailto:[EMAIL PROTECTED] On ----- >----- >Behalf Of Dyce Geoffrey H. ----- >----- >Sent: Thursday, May 22, 2008 12:23 PM ----- >----- >To: [email protected] ----- >----- >Cc: Saults Nancy Suzanne ----- >----- >Subject: Its tough getting old ----- >----- > ----- >----- >We have an overhead system and a rack system. Balancing ----- >----- >the two systems is flowing the two systems at the same ----- >----- >time and your balance point is the point where they both ----- >----- >come together. Yes??....No??? ----- >----- > ----- >----- >Geoffrey H. Dyce ----- >----- >Sales Manager ----- >----- >Contractor I, #87582700012007 ----- >----- >NICET IV ----- >----- >Industrial Fire & Safety Inc. ----- >----- >Ph: 727-573-1556 ----- >----- >Fx: 727-572-7266 ----- >----- >Cell: 727-644-8872 ----- >----- > ----- >----- >_______________________________________________ ----- >----- >Sprinklerforum mailing list ----- >----- >[email protected] ----- >----- ----- >>http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum ----- >----- > ----- >----- >To Unsubscribe, send an email ----- >----- >to:[EMAIL PROTECTED] ----- >----- >(Put the word unsubscribe in the subject field) ----- > ----- >_______________________________________________ ----- >Sprinklerforum mailing list ----- >[email protected] ----- >http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum ----- > ----- >To Unsubscribe, send an email ----- >to:[EMAIL PROTECTED] ----- >(Put the word unsubscribe in the subject field) ----- > ----- >_______________________________________________ ----- >Sprinklerforum mailing list ----- >[email protected] ----- >http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum ----- > ----- >To Unsubscribe, send an email ----- >to:[EMAIL PROTECTED] ----- >(Put the word unsubscribe in the subject field) ----- >_______________________________________________ ----- >Sprinklerforum mailing list ----- >[email protected] ----- >http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum ----- > ----- >To Unsubscribe, send an email ----- >to:[EMAIL PROTECTED] ----- >(Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field)
