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re: Random engineering question (cryogenic plant)
Posted on 2/26/16 at 1:03 pm to upgrayedd
Posted on 2/26/16 at 1:03 pm to upgrayedd
Ultimately this gets to SCFM, but the calcs I'm reviewing don't show it dependent on the LN2 pressure coming out of the pump that drives the vaporizer...which is stumping me.
1
Posted on 2/26/16 at 5:40 pm to Gaston
10 gal of liquid N2 = (10) (93.11 cf/gal) = 931.1 scfm gas at standard conditions. Assuming the pressure drop through the vaporizer is minimal (it is designed for 56,000 SCFH) then to convert to ACFM using Boyle's Law:
P1 * V1 = P2 * V2
V2 = (P1 * V1) / P2 = {(14.7) * (931.1)} / (14.7 + 5000) = 2.73 ACFM @ 5,000 psi and ambient temperature.
P1 * V1 = P2 * V2
V2 = (P1 * V1) / P2 = {(14.7) * (931.1)} / (14.7 + 5000) = 2.73 ACFM @ 5,000 psi and ambient temperature.
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