Problem
1. A two-stage compressor takes nitrogen in at 20oC, 150 kPa and compresses it to 600 kPa, 450 K. Then it flows through an intercooler, where it cools to 320 K, and the second stage compresses it to 3000 kPa, 530 K. Find the specific entropy generation in each of the two compressor stages.
2. The intercooler in the previous problem uses cold liquid water to cool the nitrogen. The nitrogen flow is 0.1 kg/s, and the liquid water inlet is 20oC and is setup to flow in the opposite direction from the nitrogen, so the water leaves at 35oC. Find the flow rate of the water and the entropy generation in this intercooler.
The response should include a reference list. Double-space, using Times New Roman 12 pnt font, one-inch margins, and APA style of writing and citations.