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Calculate the pressure on an Onion Tank

  1. Jun 14, 2015 #1
    I am concerned about adding the Vapor pressure of 430 psi to the equation. Should it be done??

    1. The problem statement, all variables and given/known data


    Calculate the pressure produced by a 22-ft onion tank filled with a hydrocarbon fluid (0.72 sg). Vapor pressure is 430. Add 55 psi N2 to the total. What is the final pressure?

    2. Relevant equations


    Height x 0.433 x specific gravity (according to the text book) = pressure.

    3. The attempt at a solution

    22 ft. x 0.433 x 0.72 = 6.85872 psi + 430 psi + 55 psi = 491.85872 psi
     
  2. jcsd
  3. Jun 15, 2015 #2

    CWatters

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    Check the units?
     
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