Refrigerant R$-134$a enters a steady$-$flow compressor at $5\backslash$deg C and as a saturated vapor.

a$)$ The refrigerant follows a reversible, adiabatic process in the compressor and

leaves at $1\mathrm{.}5$ MPa. The mass flow rate of the R$-134$a through the compressor is

$0\mathrm{.}025$ kg$/$s$.$ Neglecting changes in kinetic energy, calculate the power required by

the compressor and the temperature of the R$-134$a as it leaves the compressor.

b$)$ Suppose the compressor in part $($a$)$ has friction that generates entropy as the

refrigerant flows through the compressor at a rate of $1\mathrm{.}5($J$/$K$)/$ s$.$ What power

would be required by this compressor and what would be the temperature of the

refrigerant as it leaves the compressor?