Question

In: Mechanical Engineering

A piston-cylinder device contains a saturated mixture of steam and water having a total mass of...

A piston-cylinder device contains a saturated mixture of steam and water having a total mass of 0.5 kg at a pressure of 160 kPa and an initial volume of 100 liters. Heat is then added and the fluid expands at constant pressure until it reaches a saturated vapor state.

a) Draw a diagram representing the process showing the initial and final states of the system.

b) Sketch this process on a P-v diagram with respect to the saturation lines, critical point, and relevant constant temperature lines, clearly indicating the initial and final states.

c) Determine the initial quality and temperature of the fluid mixture prior to heating. [quality x1 = 0.182, T1 = 113.3°C]

d) Determine the final volume of the steam after heating. [0.546 m3 (546 liters)]

Solutions

Expert Solution

plz plz upvote??


Related Solutions

A mass of 3 kg of saturated liquid-vapor mixture of water is contained in a piston-cylinder...
A mass of 3 kg of saturated liquid-vapor mixture of water is contained in a piston-cylinder device at 175 kPa. Initially, 2 kg of the water is in the liquid phase and the rest is in the vapor phase. An electrical heater is in operation, and the piston rises until it hits a set of stops, which are set at double the initial volume. Electrical heating continues until the pressure reaches 500 kPa. Determine (a) the initial and final temperatures,...
A mass of 3 kg of saturated liquid-vapor mixture of water is contained in a piston-cylinder...
A mass of 3 kg of saturated liquid-vapor mixture of water is contained in a piston-cylinder device at 175 kPa. Initially, 2 kg of the water is in the liquid phase and the rest is in the vapor phase. An electrical heater is in operation, and the piston rises until it hits a set of stops, which are set at double the initial volume. Electrical heating continues until the pressure reaches 500 kPa. Determine (a) the initial and final temperatures,...
A piston-cylinder device initially contains 75 g of saturated water vapor at 310 kPa . A...
A piston-cylinder device initially contains 75 g of saturated water vapor at 310 kPa . A resistance heater is operated within the cylinder with a current of 0.4 A from a 200 Vsource until the volume doubles. At the same time a heat loss of 2 kJ occurs. a.Determine the final temperature (T2). b. Determine the duration of the process. c. What-if scenario: What is the final temperature if the piston-cylinder device initially contains saturated liquid water?
An Insulated piston cylinder device contains 4 L of saturated liquid water at a constant pressure...
An Insulated piston cylinder device contains 4 L of saturated liquid water at a constant pressure of 150 K PA. water is stirred by a paddle wheel while a current of 9 A flows for one hour through a resistor placed in the water. if 80% of the liquid is vaporized doing this constant pressure process and the paddle does 400 kJ of work during this time. determine the resistance of the resistor?
A piston–cylinder device contains steam that undergoes a reversible thermodynamic cycle. Initially the steam is at...
A piston–cylinder device contains steam that undergoes a reversible thermodynamic cycle. Initially the steam is at 400 kPa and 350oC with a volume of 0.3 m3. The steam is first expanded isothermally to 150 kPa, then compressed adiabatically to the initial pressure, and finally compressed at the constant pressure to the initial state. Determine (a) the net work and heat transfer for the cycle after you calculate the work and heat interaction for each process and (b) show the cyclic...
A weighted piston-cylinder device (pressure is not constant) initially contains 1.2 kg saturated liquid water at...
A weighted piston-cylinder device (pressure is not constant) initially contains 1.2 kg saturated liquid water at 190oC. Now heat is transferred to the water until the volume quadruples (increase four times) and the cylinder contains saturated vapor only. Determine: a) The final volume of the tank. b) The final temperature and pressure. c) The internal energy change of the water.
A piston-cylinder device contains 0.56 kg of steam at 300 degrees C and 1.4 MPa. Steam...
A piston-cylinder device contains 0.56 kg of steam at 300 degrees C and 1.4 MPa. Steam is cooled at constant pressure until one-half of the mass condenses. (a) Find the final temperature. T1= _______ degrees celcius (b) Determine the volume change in m3
A piston?cylinder device initially contains 1.5?kg saturated liquid water at 120°C. Now heat is transferred to...
A piston?cylinder device initially contains 1.5?kg saturated liquid water at 120°C. Now heat is transferred to the water until the volume increases 100 times. Determine: a. Initial Volume of the water. b. Final volume of water. c. Final state of water. d. Amount of heat added to the water e. Draw the T?s diagram
A mass of 0.3 kg of saturated refrigerant-134a is contained in a piston-cylinder device at 240...
A mass of 0.3 kg of saturated refrigerant-134a is contained in a piston-cylinder device at 240 kPa. Initially, 70 percent of the mass is in the liquid phase. Now heat is transferred to the refrigerant at constant pressure until the cylinder contains vapor only. (a) show the process on a P-v and T-v diagrams with respect to saturation lines. Determine; (b) the volume occupied by the refrigerant initially, (c) the work done, and (d) the total heat transfer.
1 kg of saturated steam at 1000 kPa is in a piston-cylinder and the massless cylinder...
1 kg of saturated steam at 1000 kPa is in a piston-cylinder and the massless cylinder is held in place by pins. The pins are removed and the system suddenly and adiabatically expands to 5x its original volume before the piston hits a pair of upper pins. The expansion takes place against an atmosphere is 60 kPa. What is the final specific internal energy of the system? The answer will be in kJ/kg.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT