Many variations of the basic Skarstrom cycle shown in Figure 20-11 have been developed. One variation is to include a partial co-flow blowdown step before the counterflow blowdown shown in Figure 20-11. What are the likely advantages and disadvantages of doing this?

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A Product gas P B Ph PL adsorbate and carrier gas Feed Blowdown BD BD Gas Product @ PH Rep PL Purge Gas (waste) Purge Feed pH H Repressuri Produc pH BD PL Rep Feed pH BD Gas Purge Gas First half cycle. Second half cycle