1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Calculating pump head required

  1. May 15, 2016 #1
    1. The problem statement, all variables and given/known data
    I need to calculate the pump head required for a fluid transfer system.

    The pump is located 3m above a storage vessel vented to atmosphere (1 bar) with a total pipe length of 5m to pump suction. The pump discharge is connected to a pressurised vessel at 2 bar absolute with an elevation of 15m and a total pipe length of 27m from pump discharge.

    2. Relevant equations
    Fluid Density 960 kg m^3

    Head loss from friction on suction side: 0.266m
    Minor head losses on suction side: 0.249m

    Head loss from friction discharge side: 1.44m
    Minor head losses on discharge side: 0.77m

    3. The attempt at a solution
    I've worked out the head required to overcome the pressurised vessel as:

    p/ρg = 100000 / 960 × 9.81 = 10.62m

    p = 100000 because this would be the gauge pressure in Pa.

    To calculate the pump head required I have basically added the sum of height elevation (18m) plus the minor and frictional losses along with the head required to account for the 1 bar increased pressure of the pressurised vessel. This leaves me with an answer of 31.345m for pump head required (Hp).

    Would this method be correct or do I need to re-evaluate my method?
  2. jcsd
  3. May 15, 2016 #2
    This looks OK to me.
  4. May 17, 2016 #3
    Thank you.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted