Search found 375 matches
- Thu Jul 31, 2014 7:54 am
- Forum: Flow calculators and fluid flow problems
- Topic: Rate of flow for an open pipe under pressure
- Replies: 3
- Views: 10463
Re: Rate of flow for an open pipe under pressure
You must know pipe length and position and size of branches if you have any.
- Fri Jun 13, 2014 11:16 pm
- Forum: Flow calculators and fluid flow problems
- Topic: Error in Sudden and Gradual Contraction K Factor?
- Replies: 1
- Views: 7609
Re: Error in Sudden and Gradual Contraction K Factor?
Well spotted, thank you for correction!
I have just made change in calculator and theory page itself.
I have just made change in calculator and theory page itself.
- Wed Jun 11, 2014 10:37 pm
- Forum: Flow calculators and fluid flow problems
- Topic: How to calculate vertical pipe flow
- Replies: 1
- Views: 7426
Re: How to calculate vertical pipe flow
You can use height difference as available head in calculator, ie p1 = rho * g * h + 101325 Pa, p2 = 101325 Pa.
- Sat May 03, 2014 12:41 am
- Forum: Flow calculators and fluid flow problems
- Topic: Roughness...
- Replies: 2
- Views: 10234
Re: Roughness...
Roghness really depends on the level of surface treatment for new pipes and corrosion level for old ones. It can be anything up to 1 mm depending on the pipe itself.
- Wed Apr 30, 2014 10:57 pm
- Forum: Flow calculators and fluid flow problems
- Topic: Calculating Pressure Vs. Time While Filling Tank
- Replies: 2
- Views: 25554
Re: Calculating Pressure Vs. Time While Filling Tank
You can look at post here: http://forum.pipeflowcalculations.com/viewtopic.php?f=3&t=10 This is similar problem as yours, but not exactly the same. Your equation is I think correct but have to clarify some abbrevations used: Vt - is volume of tank MWair what is for? rho * V * A = G = dm/dt is ma...
- Tue Apr 29, 2014 11:24 pm
- Forum: Flow calculators and fluid flow problems
- Topic: question about pipe flow
- Replies: 1
- Views: 7253
Re: question about pipe flow
You can't calculate flow rate with data you provided. You have to know more. Regulator should keep outflow pressure at constant value regardless of inlet pressure and flow rate, so for any flow rate pressure should be at set point, if flow is within regulator capacity. If your question is how much g...
- Wed Apr 23, 2014 10:12 pm
- Forum: Flow calculators and fluid flow problems
- Topic: Reducing pressures with Orifice Plates
- Replies: 5
- Views: 11553
Re: Reducing pressures with Orifice Plates
Calculator gives option for enter either density or temperature. If you choose to enter density, than calculator using R is calculating T prior to other calculation is done. I can't tell you about pipe roghness you should use. I think that it is the best way to be on safe side and choose values of p...
- Mon Apr 21, 2014 8:39 pm
- Forum: Flow calculators and fluid flow problems
- Topic: Reducing pressures with Orifice Plates
- Replies: 5
- Views: 11553
Re: Reducing pressures with Orifice Plates
Kappa is for expansion factor ISO 5167 - Y for orifices, you have it in the right middle of this page: http://www.pipeflowcalculations.com/pipe-valve-fitting-flow/flow-in-valves-fittings.php R is simply used for calculations between rho, T and p in ideal gas state equation, depending on user inputs....
- Sun Apr 20, 2014 12:25 pm
- Forum: Flow calculators and fluid flow problems
- Topic: Calculating Air Flow on exit of pipe where inlet is orifice.
- Replies: 1
- Views: 7248
Re: Calculating Air Flow on exit of pipe where inlet is orif
I think that with orifice calculator you can calculate it easily.
http://www.pipeflowcalculations.com/orifice/
http://www.pipeflowcalculations.com/orifice/
- Fri Apr 18, 2014 11:03 pm
- Forum: Flow calculators and fluid flow problems
- Topic: Reducing pressures with Orifice Plates
- Replies: 5
- Views: 11553
Re: Reducing pressures with Orifice Plates
Hello, Gas constant for CO2 is R=189 J/kgK and k=kappa=Cp/Cv=1.3 for CO2. These values are needed for calculation. You have table at: http://www.pipeflowcalculations.com/tables/gas.php . I suggest you to use check button with "use ISO constraint" just to be sure if calculation is within it...