Results 1 to 4 of 4

Thread: Air delivery

  1. #1
    Join Date
    Dec 2005
    South Australia

    Default Air delivery

    A question for all the smart people, is there a simple way to measure the air delivery/capacity of a air compressor in Liters per minute of a unknown capacity compressor

  2. #2
    Join Date
    Sep 2012
    York, North Yorkshire UK


    Best Regards:
    Baron J.

  3. #3
    BobL is offline Member: Blue and white apron brigade
    Join Date
    Feb 2006


    If you know the size of the tank in Litres, and the compressor has a pressure gauge, then the following is one way to work out the max air delivery rate at pressure.

    Bleed air from the compressor so that it starts a recharge cycle.

    When it starts the recharge start a stop watch and stop it when the compressor switched off call that time "T" and convert that to minutes.
    Note the pressures (in PSI) at the start and end of the recharge and call the difference between the 2 pressure, "P"

    Divide P by 14.7 and multiply that by the volume of the tank (V) in litres, that gives you the total volume compressed.
    Then divide V by T (in minutes) and that will give you the litres per minute.

    Lets say a compressor takes 1.5 mins to recharge a 100L tank from 90 to 135 PSI

    P = 45 PSI , V = 100, T = 1.5

    Total volume compressed = 45/14.7 *100 = ~ 300L

    Divide that by 1.5 mins = 200L/min

    Actual discharge will depend on the diameter and length of the hose and and get attached to the end of the hose.

  4. #4
    Join Date
    Dec 2005
    South Australia


    Thanks BobL and Baron J that should see me right

Similar Threads

  1. Where to site lathe coolant delivery?
    By Grahame Collins in forum METALWORK GENERAL
    Replies: 3
    Last Post: 15th Feb 2013, 01:56 PM
  2. Sluggish USPS Delivery Times
    By Anorak Bob in forum METALWORK GENERAL
    Replies: 50
    Last Post: 31st Aug 2012, 08:11 PM
  3. Sluggish AU post delivery times
    By .RC. in forum METALWORK GENERAL
    Replies: 26
    Last Post: 15th Aug 2012, 07:03 PM
  4. Delivery Time on Chronos UK
    By bwal74 in forum METALWORK GENERAL
    Replies: 12
    Last Post: 15th Jan 2012, 02:14 AM
  5. Slow delivery from o/s
    By Toggy in forum METALWORK GENERAL
    Replies: 33
    Last Post: 17th Dec 2010, 06:03 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts