A 0.08-m rigid tank initially contains saturated water vapor at 180 °C. The tank is connected by a valve to a supply line that carries steam at 1400 kPa and 400 °C. Now the valve is opened, and steam is allowed to enter the tank. Heat transfer takes place with the surroundings such that the temperature in the tank remains constant at 180 °C at all times. The valve is closed when it is observed that one-third of the volume of the tank is occupied by liquid water. Find (a) the amount of steam that has entered the tank, and (b) the amount of heat transfer. 1400 kPa Steam T = 400O°C Saturated vapor V= 0,08 m Qout T, = 180°C

A cylinder-piston device provided with stops, so that the water supports the weight of the piston, and the force of the atmosphere,It contains water, initially at 300 kPa and 0.5 m3 / kg. The water is heated to a saturated steam condition and the plunger rests on the stops. With the plunger on the stops, the water is heated up to the pressure of 600 kPa. In the P-V and T-V diagrams, with respect to the saturation lines, the process curves go through the initial and final states of the water. On both T-V and P-V diagrams draw the isotherms that pass through both states, and show their values in ° C, in the isotherms. (see img 1)

A rigid tank of volume 0.018 m is connected through a closed valve to a vertical cylinder fitted with a freely moveable frictionless heavy piston of area 0.02 m?. Initially, the rigid tank is filled with air at 500 kPa and 25 °C while the cylinder has air of volume 0.015 m³ at 25 °C. In the vicinity, the ambient air pressure is 100 kPa and the gravitational acceleration is 9.81 m/s. It is given that the 2 air can be assumed to behave as an ideal gas with the gas constant R = 0.287 kJ/kg.K. (a) At this initial state, determine the air pressure in the cylinder. The valve is then slowly opened and left opened, allowing the pressurised air from the rigid tank to flow gently into the cylinder, thus lifting the piston. This process continues until the piston comes to rest with the whole connected system reaching its final state of equilibrium. During this entire process, the air temperature in the rigid tank and the cylinder remains constant at 25 °C. (b) Find the mass of the air transferred…

An insulated piston-cylinder device contains 4.5 L of saturated liquid water at a constant pressure of 200 kPa. Water is stirred by a paddle wheel while a current of 20 A flows for 42 min through a resistor placed in the water. If 36% of the liquid is evaporated during this constant pressure process and the paddle-wheel work amounts to 280 kJ, determine the voltage of the source. Also, show the process on a P-v diagram with respect to saturation lines. H₂O = constant W P= Wh 4 Activate Wini