Problem $6-15$ pts

Refrigerant $134$a is the working fluid in a vapor$-$compression heat pump system with a heating capacity of $70,000BT\frac{U}{h}r.$ The condenser operates at $180$ psi $,$ and the evaporator temperature is $20F.$ The refrigerant is a saturated vapor at the evaporator exit and exits the condenser at $115F.$ Pressure drops in the flows through the evaporator and condenser are negligible. The compression process is adiabatic, and the temperature at the compressor exit is $200F.$

Determine:

A$.(6$ pts$)-$ All enthalpy values throughout the cycle $($Btu$/$lb$)$

B$.(2$ pts$)-$ Mass flow rate of the refrigerant $($lb$/$min$)$

C$.(1$ pt$)-$ Compressor power input $($hp$)$

D$.(1$ pt$)-$ Isentropic compressor efficiency

E$.(1$ pt$)-$ Coefficient of performance

F$.(2$ pts$)-$ Draw the device diagram for the cycle $($separate submission$)$

G$.(2$ pts$)-$ Draw the T$-$S diagram for the working fluid $($separate submission$)$