An adiabatic throttle valve operates in a steady-state, steady-flow condition with R-134a refrigerant at a flow rate of 0.2 lbm/sec. The R-134a enters the valve as saturated liquid at a pressure of 20 bar and exits at 1 bar. For this process determine:
a) the temperature at the outlet (°F)
b) the quality at the outlet(%)
c) the rate of entropy generation (Btu/°R-sec).