1. Consider that the air in the previous problem after the compressor flows in a pipe to an air tool, and at that point the temperature has dropped to ambient at 300 K and air pressure of 750 kPa. What is the second-law efficiency for the total system?
2. A compressor is used to bring saturated water vapor at 1 MPa up to 15 MPa, where the actual exit temperature is 650?C. Find the irreversibility and the second-law efficiency.