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3. A zeolite bed is used to adsorb carbon dioxide from the air in a spacecraft. The astronauts in the spacecraft expel 5 kg per
3. A zeolite bed is used to adsorb carbon dioxide from the air in a spacecraft. The astronauts in the spacecraft expel 5 kg per day of CO2. If the desired steady state concentration of CO2 in the cabin air is 0.1%, determine the required flow rate of air through the removal unit in liters per hour. Assume that the air leaving the zeolite bed has negligible CO2, and that the unit runs for 11 hours then flow is automatically shut down for 1 h while the adsorbed CO2 is purged overboard
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