Problem 9.1:
A stream that contains a mixture of methane (25% by mol) and carbon monoxide is compressed from 1 bar, 35 to 12 bar. The compressor efficiency is 90%. Treating the mixture as an ideal gas, calculate the required work.
Additional data: CPA = 40.8 J/mol K, CPB = 29.4 J/mol K (A = CH4 , B = CO).
Problem 9.2:
Air is compressed from 1 bar, 25 °C to 50 bar, and subsequently is cooled to 300 K using cooling water. Assuming air to be an ideal-gas mixture and the compressor to be 100% efficient, calculate the work in the compressor and the heat removed in the heat exchanger per mol of air. Assume air to be ideal-gas mixture (79% N2 , 21% O2 ) and use the heat capacities given in Perry's Handbook.