$4-107$ A $0\mathrm{.}1-m^3$ rigid tank contains saturated refrigeram$-134$a at $800$ kPa $.$ Initally, $40$ percent of the volume is occupied by liquid and the rest by vapor. A value at the bottom of the tank is now opened, and liquid is withdrawn from the tank. Heat is transferred to the refrigerant such that the pressure inside the tank remains consiam. The valve is closed when no liquid is left in the tank and vapor starts to come out. Determine the total heat transfer for this process. Answer: $267\mathrm{.}6$ kJ