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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Figure 3.10 Recovery vs. Pressure Ratio for p = 0.1 69 Figure 3.11 Recovery vs. Pressure Ratio for p = 0.9 70 Figure 3.12 Recovery vs. Pressure Ratio for Oxygen Concentration; yo = 0.78, P = 0.582 71 Figure 3.13 Four-Step Cycle: Net Work per Mole of Product Oxygen (wi) Done by System (y0 = 0.78, p = 0.582) 72 Figure 3.14 Four-Step Cycle: Second Law Efficiency 74 Figure 3.15 Net Work per Mole of Product Oxygen for Oxygen Concentration Using the Four-Step Cycle (w^) 75 Figure 3.16 Second Law Efficiency for Oxygen Concentration Using the Four- Step Cycle 75 Figure 3.17 Recovery for Oxygen Concentration Using the Four-Step Cycle 76 Figure 3.18 Ideal Four-Step Cycle: Flows and Energy Recovery 78 Figure 3.19 Reversible Turbine used in Blowdown 79 Figure 3.20 Reversible Expansion of Purge Gas and Reversible Expansion/ Compression of Purged Gas 80 Figure 3.21 Recovery of Work During Pressurization 82 Figure 3.22 Net Ideal Four-Step Cycle Work per Mole of Product Oxygen (WH) for Oxygen Concentration; y 0 = 0.78, P = 0.582 85 Figure 3.23 Ideal Four-Step Cycle Second Law Efficiency for Oxygen Concentration; y 0 = 0.78, p = 0.582 85 Figure 3.24 Net Ideal Four-Step Cycle Work per Mole of Product Oxygen (WH) for Oxygen Concentration 87 Figure 3.25 Ideal Four-Step Cycle Second Law Efficiency for Oxygen Concentration 87 Figure 3.26 Ideal Three-Step: Cycle Work and Molar Flows 90 Figure 3.27 Evacuation of the Adsorbent Bed 91 Figure 3.28 Expansion of Product Gas to Atmospheric Pressure 94 Figure 3.29 Net Work per Mole of Product Oxygen for the Ideal Three-Step Cycle (WB) 96 Figure 3.30 Second Law Efficiency for the Ideal Three-Step Cycle 96 viii

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