In: Mechanical Engineering
Consider a Carnot-cycle heat pump with R-410a as the working fluid. Heat is rejected from the R410a at 35 oC, during which process the R-410a changes from saturated vapor to saturated liquid. The heat is transferred to the R-410a at 0 oC. The specific volume during the isothermal heat addition process at 0 oC changes from 0.00841 m3 /kg to 0.02994 m3 /kg.
a. Show the cycle on P-T, P-v, and T-v diagrams.
b. Find the quality at the beginning and at the end of the isothermal heat addition process at 0 oC.
c. Find the pressure and specific volume at the four points.
d. Find the specific heat and specific work at each process.
e. Find the net specific heat and the net specific work during the cycle.
f. Determine the COP of the cycle using heat and work.
g. Determine the COP of the cycle using temperatures.