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Energy Efficiency of Gas Separation Pressure Swing Adsorption

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Energy Efficiency of Gas Separation Pressure Swing Adsorption ( energy-efficiency-gas-separation-pressure-swing-adsorption )

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3.4.5 Expansion of Product Gas and Discussion of Net Work Again, the product gas is expanded in order to compare the work of separation to the other cycles and the reversible work of separation. The system is shown in Figure 3.28. VP = 0 VP = V P 2 VP = V P 3 3 Po P=PH 3 P=Po 3 Np2 Np2 Figure 3.28 Expansion ofProduct Gas to Atmospheric Pressure. Volume Vp2, the volume of the product piston after the feed step, is found by using Np2 from Equation (3.84) with the ideal gas law at P = PH. P2 PA OWoX1-/*) The final volume Vp3is calculated using Np2 and the ideal gas law with P = Po. 1 fP H^ ^=f^(i-y.)(i-/') =vP,2 1oPA vP The work to deliver and expand the product gas is then: (3.87) (3.88) (3.89) (3.90) Where: y W =C2(P -P)dV + C\P-P)dV RH0p0p 0 94

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Energy Efficiency of Gas Separation Pressure Swing Adsorption

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