Recent content by gillmitch92

  1. gillmitch92

    Calculating percentage change in flow rate through a valve

    It just states that the differential pressure is constant. I'd assume this would mean that with each difference there will be exactly 10% between them. Finding the change in flow rate from one interval to the next. Not sure if that helps at all...
  2. gillmitch92

    Determining Valve Size for Natural Gas: V250 Rotary Ball Valve Calculation

    Thank you very much for the link - I'll take a look @ it.
  3. gillmitch92

    Calculating percentage change in flow rate through a valve

    It's similar to a question I have for homework but not the same. I am just needing a bit of help with equations and which one to use as I am stuck?
  4. gillmitch92

    Determining Valve Size for Natural Gas: V250 Rotary Ball Valve Calculation

    I am struggling with calculating the valve size from a V250 rotary ball valve by Fisher Controls International. The below table states that natural gas is running through the vavle and the following properties apply:Natural Gas Required volumetric flow rate [@ STP] 2.8 x 106 litre per...
  5. gillmitch92

    Calculating percentage change in flow rate through a valve

    < Mentor Note -- thread moved to HH from the technical forums, so no HH Template is shown >[/color] The max flow rate through a control valve with an equal percentage characteristic is 10 m3/h. If the valve has a rangeability ratio of 50:1 and is subjected to a constant differential pressure...
  6. gillmitch92

    Plotting Kinetic Energy of Mass Against Time and Distance

    Any help would be greatly appreciated. I have tried to work out the formula but I have confused myself now.
  7. gillmitch92

    Plotting Kinetic Energy of Mass Against Time and Distance

    I am really stuck on the 2nd graph on this question. Plot a graph of the kinetic energy of the mass against distance?
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