$(13)$ Ans. $($a$)3\mathrm{.}673$ kg$/$min; $($b$)-615\mathrm{.}3$ kJ$/$min

The cooling coil of an air$-$conditioning system is a heat exchanger in which air passes over tubes through which Refrigerant $22$ flows. Air enters with a volumetric flow rate of $40m\frac{3}{m}in$ at $27C,\frac{1\mathrm{.}1}{b}ar,$ and exits at $15C,\frac{1}{b}ar.$ Refrigerant enters the tubes at $7$ bar with a quality of $16\%$ and exits at $7$ bar, $15C.$ Ignoring heat transfer from the, outside of the heat exchanger and neglecting kinetic and potential energy effects, determine at steady state

$($a$)$ the mass flow rate of refrigerant, in $k\frac{g}{m}in.$

$($b$)$ the rate of energy transfer, in $k\frac{J}{m}in,$ from the air to the refrigerant.