Pipe Flow Calculations Forum

Well spotted, thank you for correction!
I have just made change in calculator and theory page itself.

You can use height difference as available head in calculator, ie p1 = rho * g * h + 101325 Pa, p2 = 101325 Pa.

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.

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...

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...

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...

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....

I think that with orifice calculator you can calculate it easily.
http://www.pipeflowcalculations.com/orifice/

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...

Fuel combustion heat energy calculator is developed for calculaton of heat energy (heat power) that is released during combustion of specied fuel for known fuel flow rate. Calculator is also suitable for inverse calculation of fuel flow rate for known heat power. Try calculator at: http://www.pipefl...