Outlet nozzle - 1 1/4 inch
Cut off pressure - 8 bar
Tank capacity - 35 ltrs

How can I calculate the discharge flow rate? Based on the outlet nozzle, discharge rate will vary.

  • $\begingroup$ Have you done any research? $\endgroup$
    – Solar Mike
    Mar 25, 2019 at 11:21
  • $\begingroup$ i have used ideal gas law. in that ( PV=mRT) left hand side i have replaced volume as volume flow rate , right hand replaced mass as mass flow rate . but final result, unit, have come as J/Kg. is that right $\endgroup$ Mar 25, 2019 at 13:23
  • $\begingroup$ Have you considered Bernoulli's equation? $\endgroup$
    – r13
    Dec 10, 2021 at 0:26

1 Answer 1


Horsepower is the product of pressure times mass flow rate. Mind the units, and solve for the flow rate. This assumes 100% compressor efficiency, so it will be an upper limit to the true answer.

  • $\begingroup$ thanks for response, i want to calculate the flow rate for the tank which is having 8 bar pressure of 35 litre capacity tank $\endgroup$ Mar 26, 2019 at 4:22
  • $\begingroup$ We know that. You wrote it in your question. Instead, edit your question, show what you have done and where you are stuck. $\endgroup$
    – Transistor
    Aug 22, 2019 at 20:25

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