4 replies to this topic

[Tween]

Hi,

 

How to calculate the air conumption rate when pressure drop of storage vessel and volume of storage vessel known.

 

Thank yu

[breizh]

Hi ,

If I understand correctly your query .

 

firstly : From the well known relation : P*V= Z*R*T >>>  Ro (T,P) = Mw/ V= Mw*P/(Z*R*T) in proper units

 

From the initial Pressure , let say P0 ,you can calculate the mass Mo inside the vessel : M0 = Vtank * Ro ( density air at P0 , T0)

Do the same for the final pressure ,Pf  >>> Mf =Vtank *Rf (Pf,Tf)

 

(M0-Mf) / ( tf -t0)  = flow rate  kg/s

 

Hope this helps

 

Breizh

Edited by breizh, 10 November 2013 - 01:03 AM.

[Tween]

Hi Breizh,

 

Is the "tf & t0"  time factor?

 

Thank you Breizh

Edited by teesan, 10 November 2013 - 02:17 AM.

[breizh]

yes , tf = time to reach Pf  ,

[Tween]

Thank you breizh