Re: Fluid flow rate
I read in !emc-pstc that Robert Macy wrote (in <002d01c1532b$1f882600$c5e10...@robert.macy.california.com>) about 'Fluid flow rate', on Fri, 12 Oct 2001: >Sorry about this being so far off topic, but I don't know where else to find >the largest group of technology professionals who can answer this question: > >How much water will flow out of a 3/4 inch pipe which is under 60 psi? >There is a restriction and the actual inside ID is around 7/16 inch. > >My guess is more than 5 gal/min. For example, when I get gasoline the tank >will fill (20 gal) in less than 2 minutes. So it's got to be somewhere in >this range, right? I'm surprised that you can't find this information on the web. The length of the pipe is a significant factor if the 60 psi is applied at the far end. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Eat mink and be dreary! --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Michael Garretson:pstc_ad...@garretson.org Dave Healddavehe...@mediaone.net For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: No longer online until our new server is brought online and the old messages are imported into the new server.
RE: Fluid flow rate
Robert, I remember solving a similar problem, water cooled heat-sink, using a machinists handbook. If you have one handy it saves dragging out the Fluid dynamics text and clearing the cobwebs. Best regards, Daniel E. Teninty, P.E. Managing Partner DTEC Associates LLC http://www.dtec-associates.com Streamlining the Compliance Process 5406 S. Glendora Drive Spokane, WA 99223 (509) 443-0215 (509) 443-0181 fax -Original Message- From: owner-emc-p...@majordomo.ieee.org [mailto:owner-emc-p...@majordomo.ieee.org]On Behalf Of Robert Macy Sent: Friday, October 12, 2001 7:35 AM To: emc-p...@ieee.org Subject: Fluid flow rate Sorry about this being so far off topic, but I don't know where else to find the largest group of technology professionals who can answer this question: How much water will flow out of a 3/4 inch pipe which is under 60 psi? There is a restriction and the actual inside ID is around 7/16 inch. My guess is more than 5 gal/min. For example, when I get gasoline the tank will fill (20 gal) in less than 2 minutes. So it's got to be somewhere in this range, right? - Robert - Robert A. Macy, PEm...@california.com 408 286 3985 fx 408 297 9121 AJM International Electronics Consultants 619 North First St, San Jose, CA 95112 --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Michael Garretson:pstc_ad...@garretson.org Dave Healddavehe...@mediaone.net For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: No longer online until our new server is brought online and the old messages are imported into the new server. --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Michael Garretson:pstc_ad...@garretson.org Dave Healddavehe...@mediaone.net For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: No longer online until our new server is brought online and the old messages are imported into the new server.
Re: Fluid flow rate
Length of pipe and angle are just some of the things needed to be considered. Otherwise, you could have a long enough pipe and/or a pipe angle which could stop flow. Try http://www.efunda.com/formulae/fluids/calc_pipe_friction.cfm Regards, Doug McKean - Original Message - From: "Robert Macy" To: Sent: Friday, October 12, 2001 7:35 AM Subject: Fluid flow rate > > Sorry about this being so far off topic, but I don't know where else to find > the largest group of technology professionals who can answer this question: > > How much water will flow out of a 3/4 inch pipe which is under 60 psi? > There is a restriction and the actual inside ID is around 7/16 inch. > > My guess is more than 5 gal/min. For example, when I get gasoline the tank > will fill (20 gal) in less than 2 minutes. So it's got to be somewhere in > this range, right? > > - Robert - > >Robert A. Macy, PEm...@california.com >408 286 3985 fx 408 297 9121 >AJM International Electronics Consultants >619 North First St, San Jose, CA 95112 > > > > --- > This message is from the IEEE EMC Society Product Safety > Technical Committee emc-pstc discussion list. > > Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ > > To cancel your subscription, send mail to: > majord...@ieee.org > with the single line: > unsubscribe emc-pstc > > For help, send mail to the list administrators: > Michael Garretson:pstc_ad...@garretson.org > Dave Healddavehe...@mediaone.net > > For policy questions, send mail to: > Richard Nute: ri...@ieee.org > Jim Bacher: j.bac...@ieee.org > > All emc-pstc postings are archived and searchable on the web at: > No longer online until our new server is brought online and the old messages are imported into the new server. > --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Michael Garretson:pstc_ad...@garretson.org Dave Healddavehe...@mediaone.net For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: No longer online until our new server is brought online and the old messages are imported into the new server.
Re: Fluid flow rate
Robert, without ANY warranties: As far as I can recall from my physics course at university your fluid flow rate can be predicyed by the Hagen-Poiseuille law: pi * (pressure difference between pipe ends) * (radius of pipe)^4 Q = 8 * (viscosity of fluid) * (length of pipe) If you plug in SI units Q should have the unit [m^3/s]. For water at 20 degree Celsius my text book gives a viscosity of about 1.0e-3 kg/(m*s). I guess conversion of units is a bit of work here ... I hope this helps. Regards, Christian Schuster IBM "Robert Macy" @majordomo.ieee.org on 10/12/2001 10:35:21 AM Please respond to "Robert Macy" Sent by: owner-emc-p...@majordomo.ieee.org To: cc: Subject: Fluid flow rate Sorry about this being so far off topic, but I don't know where else to find the largest group of technology professionals who can answer this question: How much water will flow out of a 3/4 inch pipe which is under 60 psi? There is a restriction and the actual inside ID is around 7/16 inch. My guess is more than 5 gal/min. For example, when I get gasoline the tank will fill (20 gal) in less than 2 minutes. So it's got to be somewhere in this range, right? - Robert - Robert A. Macy, PEm...@california.com 408 286 3985 fx 408 297 9121 AJM International Electronics Consultants 619 North First St, San Jose, CA 95112 --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Michael Garretson:pstc_ad...@garretson.org Dave Healddavehe...@mediaone.net For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: No longer online until our new server is brought online and the old messages are imported into the new server. --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Michael Garretson:pstc_ad...@garretson.org Dave Healddavehe...@mediaone.net For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: No longer online until our new server is brought online and the old messages are imported into the new server.
Fluid flow rate
Sorry about this being so far off topic, but I don't know where else to find the largest group of technology professionals who can answer this question: How much water will flow out of a 3/4 inch pipe which is under 60 psi? There is a restriction and the actual inside ID is around 7/16 inch. My guess is more than 5 gal/min. For example, when I get gasoline the tank will fill (20 gal) in less than 2 minutes. So it's got to be somewhere in this range, right? - Robert - Robert A. Macy, PEm...@california.com 408 286 3985 fx 408 297 9121 AJM International Electronics Consultants 619 North First St, San Jose, CA 95112 --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Michael Garretson:pstc_ad...@garretson.org Dave Healddavehe...@mediaone.net For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: No longer online until our new server is brought online and the old messages are imported into the new server.
