Refrigerant-22 absorbs heat from a cooled space at 50F as it flows through an evaporator of a

Question:

Refrigerant-22 absorbs heat from a cooled space at 50°F as it flows through an evaporator of a refrigeration system. R-22 enters the evaporator at 10°F at a rate of 0.08 lbm/s with a quality of 0.3 and leaves as a saturated vapor at the same pressure. Determine
(a) The rate of cooling provided, in Btu/h,
(b) The rate of exergy destruction in the evaporator, and
(c) The second-law efficiency of the evaporator. Take T0 = 77°F. The properties of R-22 at the inlet and exit of the evaporator are: h1 = 107.5 Btu/lbm, s1 = 0.2851 Btu/lbm·R, h2 = 172.1 Btu/lbm, s2 = 0.4225 Btu/lbm·R.