A gas mixture (16 mol % O, 68 mol% N, 1 mol % CO, 5 mol...

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A gas mixture (16 mol % O₂, 68 mol% N₂, 1 mol % CO, 5 mol % CO2, and 10 mol % H₂O) is cooled from 1100 °C to 100 °C using a type of heat exchanger called a waste heat boiler. Water is fed to the boiler at 20 °C and 1 atm, and exits as saturated steam at 5 atm. a) Calculate the relative molar flowrate of the cooling water to the gas mixture (i.e., nw/ng). b) Why might a waste-heat boiler be used instead of discharging the hot gas stream to the environment? A gas mixture (16 mol % O₂, 68 mol% N₂, 1 mol % CO, 5 mol % CO2, and 10 mol % H₂O) is cooled from 1100 °C to 100 °C using a type of heat exchanger called a waste heat boiler. Water is fed to the boiler at 20 °C and 1 atm, and exits as saturated steam at 5 atm. a) Calculate the relative molar flowrate of the cooling water to the gas mixture (i.e., nw/ng). b) Why might a waste-heat boiler be used instead of discharging the hot gas stream to the environment?

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