Question

In: Mechanical Engineering

The following problem description applies also to the next two problems. A piston-cylinder device contains 2...

The following problem description applies also to the next two problems.

A piston-cylinder device contains 2 kg of a saturated liquid mixture at an initial state 1 with p1= 100 kPa and x1= 0.8. The water is heated at constant pressure until its final state 2 with volume V2 = 1.947V1.

Its initial volume, in m3/kg, is closer to:

A) 3.836

B) 1.294

C) 2.990

D) 2.345

E) 2.156

F) 2.711

G) 4.625

H)1.736

B) Its final temperature, in oC, is closer to:

C) The amount of heat supplied to the steam during the expansion process, in kJ, is closer to:

Solutions

Expert Solution

samet mamat answered 1 year ago
Next > < Previous

Related Solutions

The following problem description applies also to the next two problems. A piston-cylinder device contains 2...
The following problem description applies also to the next two problems. A piston-cylinder device contains 2 kg of a saturated liquid mixture at an initial state 1 with p1= 100 kPa and x1= 0.8. The water is heated at constant pressure until its final state 2 with volume V2 = 1.947V1. Its initial volume, in m3/kg, is closer to: 2.990 3.836 2.711 4.625 2.345 1.736 2.156 1.294 Its final temperature, in oC, is closer to: 268 167 300 142 280...
The following problem description applies also to the next two problems. A piston-cylinder device contains 2...
The following problem description applies also to the next two problems. A piston-cylinder device contains 2 kg of a saturated liquid mixture at an initial state 1 with p1= 100 kPa and x1= 0.8. The water is heated at constant pressure until its final state 2 with volume V2 = 1.947V1. Its initial volume, in m3/kg, is closer to: Its final temperature, in oC, is closer to: The amount of heat supplied to the steam during the expansion process, in...
A piston-cylinder device, whose piston is resting on a set of stops, initially contains 2 kg...
A piston-cylinder device, whose piston is resting on a set of stops, initially contains 2 kg of air at 300 kPa and 27ºC. The mass of the piston is such that a pressure of 600 kPa is required to move it upward. Heat is now transferred to the air until its volume doubles. a) Determine the work done by the air and b) the total heat transferred to the air during this process. c) Also, sketch the process on a...
A piston–cylinder device contains 0.85 kg of refrigerant-134a at -10°C. The piston that is free to...
A piston–cylinder device contains 0.85 kg of refrigerant-134a at -10°C. The piston that is free to move has a mass of 12 kg and a diameter of 25 cm. The local atmospheric pressure is 88 kPa. Now, heat is transferred to refrigerant-134a until the temperature is 10°C. Determine (a) the final pressure, (b) the change in the volume of the cylinder, and (c) the change in the enthalpy of the refrigerant-134a.
A piston–cylinder device initially contains 2 kg water in 1 m3 at 500 kPa. The system...
A piston–cylinder device initially contains 2 kg water in 1 m3 at 500 kPa. The system then cools down and the volume drops to half and pressure of 300 kPa. At this state, the piston is resting on a set of stops, and the mass of the piston is such that a pressure of 500 kPa is required to move it. (a) Show the process on a P-v, T-v and P-T diagrams with respect to saturation lines and determine, (b)...
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...
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 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?
A piston-cylinder device initially contains 0.3 m3 of nitrogen gas at 350 kPa and 35 ℃.
A piston-cylinder device initially contains 0.3 m3 of nitrogen gas at 350 kPa and 35 ℃. An electric heater within the device is turned on and is allowed to pass a 240W for 6 minutes. Nitrogen expands at constant pressure, and a heat loss of 3000 J occurs during the process. Determine the final temperature of the nitrogen. (Average CP for Nitrogen is 1.039 kJ/kgK and molecular weight of Nitrogen is 28.01 kg/kmol.)  
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?
ADVERTISEMENT
Subjects
ADVERTISEMENT
Latest Questions
ADVERTISEMENT