A piston-cylinder device contains 1 m3 of N2 at 100 kPa and 300 K (atmospheric conditions).
(a) Determine the mass of N2(in kg). The trapped N2 is now rapidly compressed (adiabatically) with negligible friction (reversibly) to one eighth its original volume. Determine.
(b) The temperature.
(c) Pressure (kPa) right after the compression process is over. The volume is now held constant while the air cools down to the atmospheric temperature of 300 K. Determine
(d) The pressure at the end of this cooling process. Finally, the gas is allowed to expand back to its original pressure of 100 kPa in an isentropic manner.
(e) Determine the final temperature right after the expansion (K). Also determine.
(f) The work required for compression
(g) Work produced by expansion. Use the PG model for N2.