Question

Steam undergoes an isentropic compression in an insulated piston–cylinder assembly from an initial state where T1...

Steam undergoes an isentropic compression in an insulated piston–cylinder assembly from an initial state where T1 = 120°C, p1 = 1 bar to a final state where the pressure p2 = 20 bar. Determine the final temperature, in °C, and the work, in kJ per kg of steam. The final temperature equals 513.87°C.

Engineering   Mechanical-Engineering   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
One kg of water in a piston-cylinder assembly undergoes two processes in series from an initial...
One kg of water in a piston-cylinder assembly undergoes two processes in series from an initial state where p1 = 0.8 MPa, T1 = 500°C: Process 1-2: Constant-pressure compression until the volume is half of the initial volume. Process 2-3: Constant-volume cooling until the pressure drops to 400 kPa. Sketch the two processes in series on a p-v and T-v diagram. Determine the work and heat transfer for both processes.
Carbon dioxide (CO2) gas in a piston-cylinder assembly undergoes three processes in series that begin and...
Carbon dioxide (CO2) gas in a piston-cylinder assembly undergoes three processes in series that begin and end at the same state (a cycle). Process 1–2: Expansion from state 1 where p1 = 10 bar, V1 = 1 m3, to state 2 where V2 = 4 m3. During the process, pressure and volume are related by pV1.5 = constant. Process 2–3: Constant volume heating to state 3 where p3 = 10 bar. Process 3–1: Constant pressure compression to state 1. Sketch...
Carbon dioxide (CO2) is compressed in a piston–cylinder assembly from p1 = 0.7 bar, T1 =...
Carbon dioxide (CO2) is compressed in a piston–cylinder assembly from p1 = 0.7 bar, T1 = 280 K to p2 = 14 bar. The initial volume is 0.2 m3. The process is described by pV1.25 = constant. Assuming ideal gas behavior and neglecting kinetic and potential energy effects, determine the work and heat transfer for the process, each in kJ, using constant specific heats evaluated at 300 K, and data from Table A-23.
Water undergoes a constant‐volume process within a piston–cylinder assembly from saturated liquid at 4 bar to...
Water undergoes a constant‐volume process within a piston–cylinder assembly from saturated liquid at 4 bar to a final pressure of 50 bar. Kinetic and potential energy effects are negligible. Determine the work and the heat transfer, each in kJ per kg of water. [7 points]
A piston-cylinder assembly containing 3 kg of an ideal gas undergoes a constant pressure process from...
A piston-cylinder assembly containing 3 kg of an ideal gas undergoes a constant pressure process from an initial volume of 48 m3 to a final volume of 30 m3 . During the process, the piston supplies 1.2 MJ of work to the gas. The gas has a constant specific heat at constant volume of 1.80 kJ/(kg∙K) and a specific gas constant of 1.48 kJ/(kg∙K). Neglect potential and kinetic energy changes. a. Determine the initial specific volume of the gas in...
A piston-cylinder device with a set of stops initially contains 0.35 kg of steam at 1.0...
A piston-cylinder device with a set of stops initially contains 0.35 kg of steam at 1.0 MPa and 900 degrees C. The location of the stops corresponds to 44 percent of the initial volume. Now the steam is cooled. Determine the magnitude of the compression work if the final state is (A) 1.0 MPa and 600 degrees C and W=. kJ (B) 500 kPa. W=. kJ (C) Also determine the temperature at the final state in part (B). T2=. C
Ammonia contained in a piston–cylinder assembly, initially saturated vapor at T1 = 4°F, undergoes an isothermal...
Ammonia contained in a piston–cylinder assembly, initially saturated vapor at T1 = 4°F, undergoes an isothermal process to a final specific volume v2 = 5.2 ft3/lb. Determine the final pressure, in lbf/in2, and the final quality, x2.
Water, initially (state 1) a saturated liquid at 1100C, is contained in a piston-cylinder assembly. The...
Water, initially (state 1) a saturated liquid at 1100C, is contained in a piston-cylinder assembly. The water undergoes a process to the corresponding saturated vapor (state 2), during which the piston moves freely in the cylinder. If the change of state is brought about by heating the water as it undergoes an internally reversible process at constant pressure and temperature, determine (a) heat transfer using first law of thermodynamics in kJ/kg and (b) heat transfer using second law of thermodynamics...
A mass of one kg of water within a piston–cylinder assembly undergoes a constant-pressure process from...
A mass of one kg of water within a piston–cylinder assembly undergoes a constant-pressure process from saturated vapor at 500 kPa to a temperature of 260°C. Kinetic and potential energy effects are negligible. For the water: a) Evaluate the work, in kJ, b) If the work is 30 kJ, evaluate the heat transfer, in kJ, c) If the heat transfer is negligible, evaluate the entropy production in kJ/K d) Determine if the process is reversible, irreversible, or impossible.
1) An ideal gas is contained in a piston-cylinder device and undergoes a power cycle as...
1) An ideal gas is contained in a piston-cylinder device and undergoes a power cycle as follows: 1-2 isentropic compression from an initial temperatureT1= 20 degree celsius with a compression ratio r = 5 2-3 constant pressure heat addition 3-1 constant volume heat rejection The gas has constant specific heats with cv = 0.7 kJ/kg·K and R= 0.3 kJ/kg·K. (a) Sketch the P-v and T-s diagrams for the cycle. (b) Determine the heat and work interactions for each pro-cess, in...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT