Prob. 4-68 A piston–cylinder device contains
2.2 kg of nitrogen initially at 100 kPa and 25C. The nitrogen is
now compressed slowly in a polytropic process during which PV^1.3 =
constant until the volume is reduced by one-half. Determine the
work done and the heat transfer for this process.
4–69 Reconsider Prob. 4–68. Using
EES (or other) software,plot the process described in the problem
on a P-V diagram, and investigate the effect of the poly- tropic
exponent n on the boundary...