each question alone

Q3 (j marks) A rigid vessel having a volume of 5m3 contains 0.5 m3 of saturated liquid water and 4.95m3 of saturated water vapor at 0.1MPa as shown in Figer. Heat is transferred until the vessel is filled with saturated vapor. and determine: 1. The final pressure and temperature [b] 2. The heat transfer for this process. [3] 3. Plot the T-v diagram of the process [2] Q4 (5 marks) The inner and outer glasses of a 2m-by-2m double panel window are 180C and 60C, respectively. If the 1cm space between the two glasses is filled with still air. Determine the rate of heat transfer through the air layer by conduction, in kW if the thermal conductivity of the air at room temperature is 0.026W/mC ? Q5 (10 marks) An insulated piston-cylinder device contains 5L of saturated liquid water at a constant pressure of 175kPa. Water is stirred by a paddle wheel while a current of 8 A flows for 45min through a resistor placed in the water. If half of the liquid is evaporated during this constant-pressure process and the paddle-wheel work amounts to 400kJ, determine the a) Voltage of the source [8] b) How the process on a P-v diagram with respect to saturation lines [2]