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Engineering
Mechanical Engineering
Calculating Pressure from Air Displacement in Gasoline Tank
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[QUOTE="JBA, post: 6042549, member: 570081"] Caleb, you want the entrance pressure to the vent, which is also the tank static pressure, with an vent air volume flow equivalent to that of the gasoline volume flow into the tank. The simplest Bernoulli's equation for that determination reduces to: P1 = .5*ρ*(Q/A)^2, With ρ in lb/cu ft, Q in cfs, and A in ft^2 for units consistency. In that equation, P1 is the static pressure in the tank, and .5*ρ*Q/A is the equivalent amount of dynamic flowing energy thru the vent that can be converted from the P1 tank static pressure. The result will be a tank pressure in psf that when converted to psi is much less than 1 psi. [/QUOTE]
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Calculating Pressure from Air Displacement in Gasoline Tank
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