A simple vapor compression cycle develops

$15$ tons of refrigeration. a$)$ draw the ph

diagram, determine the b$)$ refrigerating

effect $(k\frac{J}{k}g),$ c$)$ mass flow rate of

refrigerant $(k\frac{g}{m}in),$ d$)$ power requirement

of the compressor $($kW$),$ e$)$ volume flow rate

of refrigerant at compressor inlet

conditions $(m\frac{3}{m}in),$ f$)$ coefficient of

performance, g$)$ power per ton $($kW$/$ton$),$ h$)$

rate of heat rejection to the environment

$(kW),$i the fraction of vapor in the mixture

at entrance to the evaporator. used enthalpy on the ff point$1-1500$kj$/$kg$,$ point$2-1700$kj$/$kg$,$ point$3-400$kj$/$kg$,$ point$4-400$kj$/$kg