1. Carbon dioxide flows through a device, entering at 300 K, 200 kPa and leaving at 500 K. The process is steady state polytropic with n = 3.8, and heat transfer comes from a 600 K source. Find the specific work, specific heat transfer, and specific entropy generation due to this process.
2. A flow of nitrogen, 0.1 kg/s, comes out of a compressor stage at 500 kPa, 500 K and is now cooled to 310 K in a counter flowing intercooler by liquid water at 125 kPa, 15?C that leaves at 22?C. Find the flow rate of water and the total rate of entropy generation.
