Pressurized Tank

  • Thread starter sarathane
  • Start date
1
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I am trying to figure out how to equate hole size to pressure loss/time for a closed tank. Here's the scenario:

300 L closed tank
Pressurized to 20 psig with air
Pressure loss is 1 psi over a time period of 1 hour
Temperature is 30 deg. C

How can I relate hole size to this pressure loss? Can assume ideal gas...just need a rough estimate/ball park answer.
 

siddharth

Homework Helper
Gold Member
1,110
0
Use the conservation of mass (ie, continuity equation), the equation of state and an energy balance (ie, bernoulli equation)
 

russ_watters

Mentor
18,848
5,038
Right - and whatever you get from that, double it, since the nozzle efficiency is probably only 50%.
 

FredGarvin

Science Advisor
5,050
6
Not to mention it will be sonic coming out of any hole that will allow a back pressure that large.
 

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