Question 01: A piston-cylinder device containing 0.4 kg of water initially is at 100 kPa and a volume of 0.6 m^3. A 110V, 20 amp electric heater is then turned on and kept on for a period of 2 minutes. As a result, the free-moving piston moves up, keeping the pressure constant, but the temperature of the water rises to 250°C. No heat is externally added, but heat is lost from the device as shown. Draw the process on a T-diagram (Submit it after scanning).
Find:
1. Initial and final states of the water
2. Initial internal energy (kJ/kg)
3. Final internal energy (kJ/kg)
4. Final volume (m^3)
5. Amount of boundary work produced by the moving piston (k)
6. Amount of electric work supplied (k)
7. Amount of heat lost (in kJ)
Submit your scanned calculations.
Water (W): 0.4 kg