eyefi Posted November 9, 2004 Share Posted November 9, 2004 does anyone know how to work out what volume of liquid u can get through a certain diameter hose at a partucular pressure? Quote Link to comment Share on other sites More sharing options...
Jake Posted November 9, 2004 Share Posted November 9, 2004 Sounds like a simple question doesn't it? I did a search on the net but there doesn't seem to be a simple answer. This might help : http://www.processassociates.com/process/fluid/dp_1.htm Quote Link to comment Share on other sites More sharing options...
dangerous brain Posted November 9, 2004 Share Posted November 9, 2004 There is going to be so many variables. Bend radii, constriction caused in a bended pipe, and amount of bends for one. To a degree surface friction of the pipe material.I suppose there must be set industry standards of what size pipe is required to flow certain amounts of fluids over a set distance and have it arrive at a set flow rate. I guess the car designer types would be able to tell you where to find these standards. If they don't show up I am guessing that its vehicular based question you have perhaps a kit car forum would be able to furnish you with some info as they will have to fashion bespoke fuel pipes from pumps and air pipes and the likes. Quote Link to comment Share on other sites More sharing options...
eyefi Posted November 9, 2004 Author Share Posted November 9, 2004 Originally posted by Jake Sounds like a simple question doesn't it? I did a search on the net but there doesn't seem to be a simple answer. thats what i thought. it doesnt have to b exact i just need a "best guess" calculation. i'll have a play with that calculator. cheers. Quote Link to comment Share on other sites More sharing options...
dandan Posted November 9, 2004 Share Posted November 9, 2004 Velocity is the one thing you need to make that easy Eyefi, I guess you don't know what that is though. Let me know what you're trying to calculate and I'll do my best to help you out. As with all engineering, there will be a number of assumptons that need to be made! Quote Link to comment Share on other sites More sharing options...
Matt Harwood Posted November 9, 2004 Share Posted November 9, 2004 Originally posted by eyefi does anyone know how to work out what volume of liquid u can get through a certain diameter hose at a partucular pressure? Can't you ever ask a simple question! Quote Link to comment Share on other sites More sharing options...
dandan Posted November 9, 2004 Share Posted November 9, 2004 They're the ones with simple boring answers though! Hopefully this won't for Eyefi's automated greenhouse watering system - struggling on hose pipe size !!! Crossing fingers it's engine related. Quote Link to comment Share on other sites More sharing options...
Guest Terry S Posted November 9, 2004 Share Posted November 9, 2004 many factors mate, got a specific hose and size in mind? Quote Link to comment Share on other sites More sharing options...
merckx Posted November 9, 2004 Share Posted November 9, 2004 You need to know the density of the fluid first. I might do it later , I've forgotten most of the stuff that I did on my Mechanical Engineering Degree 14 years ago:( I've got some good books though. Quote Link to comment Share on other sites More sharing options...
dandan Posted November 9, 2004 Share Posted November 9, 2004 14 years... Christ you must have been working with those horrible old units of feet and inches along with slugs, ksi, BTU's and other such nasties! Horrible. :) Quote Link to comment Share on other sites More sharing options...
eyefi Posted November 9, 2004 Author Share Posted November 9, 2004 Originally posted by dandan Velocity is the one thing you need to make that easy would u know, velocity is the one thing i dont know a general rule of thumb for fuel hose is:- 4-600hp -8 600hp > -10 i wanted to check this and see what sort of safety margin was in there. Quote Link to comment Share on other sites More sharing options...
eyefi Posted November 9, 2004 Author Share Posted November 9, 2004 it's not for my hydroponic dope farm, honest Quote Link to comment Share on other sites More sharing options...
MONKEYmark Posted November 10, 2004 Share Posted November 10, 2004 Originally posted by Matt Harwood Can't you ever ask a simple question! hey matt i have never known anyone who does as much reasurch as eyefi. he sure goes into detail i was up at his house last week, even i learnd a bit about fuel kits. some of them hoses sure can take some high pressure. did you know he is writing a haynes manual for the supra, he has stripped his car down into a million bits too roy castle would be proud of his DEDECATION Quote Link to comment Share on other sites More sharing options...
Guest Usmann A Posted November 10, 2004 Share Posted November 10, 2004 Eyefi, I have a chart, and formula off Aerquip, Ive scanned in, do you have an email addy mate? Its too big to upload here, its got a rough estimation, works in US gallons tho, conversion you prob know. Quote Link to comment Share on other sites More sharing options...
Guest Terry S Posted November 10, 2004 Share Posted November 10, 2004 Originally posted by eyefi would u know, velocity is the one thing i dont know a general rule of thumb for fuel hose is:- 4-600hp -8 600hp > -10 i wanted to check this and see what sort of safety margin was in there. There is a huge safety margin here mate Quote Link to comment Share on other sites More sharing options...
eyefi Posted November 10, 2004 Author Share Posted November 10, 2004 cheers guys, im not anal, just very inquisitive Quote Link to comment Share on other sites More sharing options...
TLicense Posted November 10, 2004 Share Posted November 10, 2004 IIRC from my days at college.... Ignoring losses for an uncompressible fluid travelling through a pipe, using bernou... what's his names equation.... density x flow speed x cross sectional area = work done So, if we're talking about a solid tube that won't expand (cross section area stays the same) and say the density of the fluid stays the same, then the flow speed would be dependant on how hard you push it through the pipe. (This is ignoring losses remember - which won't be small depending on what route the fluid is taking - hence why it's difficult to pump water through a crease in your hose pipe, yet easy when it's smooth) However this is also talking about uncompressible fluids (That practically don't exist). If you start to compress fluids then you have to take into account heat output and all-sorts. Not easy. I think that's right anyway, it's been a while and I wasn't paying much attention at the time.... Quote Link to comment Share on other sites More sharing options...
Terminator Posted November 11, 2004 Share Posted November 11, 2004 I asked a similar question a few years ago regarding exhaust gas flow and pipe size/ restrictions. Adam W was very knowledgeable in this arwa give him a PM Quote Link to comment Share on other sites More sharing options...
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