(Solution) - An insulated rigid tank initially contains 1 4 kg saturated liquid water -(2025 Original AI-Free Solution)

Paper Details

An insulated rigid tank initially contains 1.4-kg saturated liquid water at 200oC and air. At this state, 25 percent of the volume is occupied by liquid water and the rest by air. Now an electric resistor placed in the tank is turned on, and the tank is observed to contain saturated water vapor after 20 min. Determine
(a) The volume of the tank,
(b) The final temperature, and
(c) The electric power rating of the resistor. Neglect energy added to the air.