Problem #1 A 5 liter rigid cocker is fitted with a relief valve at the top. Initially 90% of the volume is saturated water at 100 °C. Heat is added and relief valve start to open when the pressure reaches 300 kPa, allowing saturated vapor to escape to maintain the pressure of the cocker constant. Find the amount of heat transfer during the process if half of the water escapes through the relief valve. Relief valve Water Heat Problem #2 An insulated free piton-cylinder arrangement initially contains 10 kg of water at 200 kPa with a quality of 60%. A supply line of steam at 500 kPa and 350 °C is opened to allow steam into the piston-cylinder arrangement until all the liquid inside just vaporizes. Determine: a) The final temperature in the cylinder b) The mass of steam that has entered Steam: 300 °C, 500 kPa Problem #3 A 0.01 m³ rigid tank contains initially Refrigerant 134a at 24 °C with a quality of 99 %. A valve at the bottom of the tank is opened to withdraw liquid refrigerant. Heat is added during the process to maintain constant temperature during the process. Determine the amount of heat transfer required to draw one half of the total initial mass.