A rigid tank having a volume of 0.11 m3 initially contains water as a two-phase liquid-vapor mixture at 0.08 bar and a quality of 2%. The water is heated in two stages: Stage1: Constant-volume heating until the pressure is 0.5 bar.
Stage 2: Continued heating while saturated water vapor is slowly withdrawn from the tank at a constant pressure of 0.5 bar. Heating ceases when all the water remaining in the tank is saturated vapor at 0.5 bar.

Required:
For the water, evaluate the heat transfer, in kJ, for each stage of heating. Ignore kinetic and potential energy effects.