Question: A stack gas containing 71.9% N2, 10% CO2 and 18.1% CO is passed through a turbine. This gas stream flows at 500 m3 STP/min and

A stack gas containing 71.9% N2, 10% CO2 and 18.1% CO is passed through a turbine. This gas stream flows at 500 m3 STP/min and cools from 1000C to 500C. a. How much shaft work is done if the rate of heat removal from the turbine is 2000 kW? b. What was the flow rate of air (m3/s) to the combustor if the air was fed at 50C and 6 atm? c. What is the theoretical amount (mol/s) of air required for the combustor? d. Generally excess air is used. Why?

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