Question
In: Mechanical Engineering
Problem 6.082 SI Steam undergoes an isentropic compression in an insulated piston–cylinder assembly from an initial...
Problem 6.082 SI
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 = 50
bar.
Determine the final temperature, in °C, and the work, in kJ per kg
of steam.
Solutions
samet mamat answered 2 years agoRelated Solutions
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 = 30
bar.
Determine the final temperature, in °C, and the work, in kJ per kg
of steam.
A piston cylinder device with air is going through an isentropic compression. The initial pressure is...
A piston cylinder device with air is going through an isentropic
compression. The initial pressure is 0.1 MPa and temperature is 300
K. During the isentropic compression process, the volume is
decreased to 1/18 of the initial volume. Using variable specific
heats, determine the pressure and temperature at the end of the
compression process. What is the amount of work consumed?
A gas in a piston–cylinder assembly undergoes a compression process for which the relation between pressure...
A gas in a piston–cylinder assembly undergoes a compression
process for which the relation between pressure and volume is given
by pVn = constant. The initial volume
is 0.2 m3, the final volume is 0.04 m3, and
the final pressure is 2 bar.
For n = 1.3, determine the initial pressure, in bar, and
the work for the process, in kJ.
Steam, initially at 700 lbf/in.2, 550°F undergoes a polytropic process in a piston–cylinder assembly to a...
Steam, initially at 700 lbf/in.2, 550°F undergoes a
polytropic process in a piston–cylinder assembly to a final
pressure of 2200 lbf/in.2 Kinetic and potential energy
effects are negligible.
Determine the heat transfer, in Btu per lb of steam, for a
polytropic exponent of 1.4,
(a) using data from the steam tables.
(b) assuming ideal gas behavior.
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...
Air undergoes a polytropic process in a piston–cylinder assembly from p1 = 1 bar, T1 =...
Air undergoes a polytropic process in a piston–cylinder assembly
from p1 = 1 bar, T1 = 295 K to p2 = 7 bar. The air is modeled as an
ideal gas and kinetic and potential energy effects are negligible.
For a polytropic exponent of 1.4, determine the work and heat
transfer, each in kJ per kg of air, (1) assuming constant cv
evaluated at 300 K. (2) assuming variable specific heats.
Air undergoes a polytropic process in a piston–cylinder assembly from p1 = 1 bar, T1 =...
Air undergoes a polytropic process in a piston–cylinder assembly
from p1 = 1 bar, T1 = 295 K
to p2 = 3 bar. The air is modeled as an ideal
gas and kinetic and potential energy effects are negligible.
For a polytropic exponent of 1.2, determine the work and heat
transfer, each in kJ per kg of air,
(1) assuming constant cv evaluated at 300
K.
(2) assuming variable specific heats.
Air undergoes a polytropic process in a piston–cylinder assembly from p1 = 1 bar, T1 =...
Air undergoes a polytropic process in a piston–cylinder assembly
from p1 = 1 bar, T1 = 295 K to p2 = 3 bar. The air is modeled as an
ideal gas and kinetic and potential energy effects are negligible.
For a polytropic exponent of 1.6, determine the work and heat
transfer, each in kJ per kg of air, (1) assuming constant cv
evaluated at 300 K. (2) assuming variable specific heats.
A 10 kg steam initially at 2 MPa saturated vapor is inside an insulated piston cylinder....
A 10 kg steam initially at 2 MPa saturated vapor is inside an
insulated piston cylinder. The cylinder has a bottom valve. As this
valve opens, steam at 800 kPa and 200C exits while the steam inside
the tank has 400kPa saturated vapor. Find the exit mass of steam
from the cylinder in kg.
Four kilograms of steam in a piston/cylinder device at 400 kPa and 175 °C undergoes isothermal...
Four kilograms of steam in a piston/cylinder device at 400 kPa and
175 °C undergoes isothermal and mechanically reversible process to
a final pressure such that the steam is completely condensed (i.e.,
became a saturated liquid). Determine Q and W for this process:
(b) Using generalized correlations and Equations (6.70 –
6.74). Comment on the accuracy of your answer.
[Answer: Q = -9,461 kJ, W = 1494.9 kJ]
ADVERTISEMENT
ADVERTISEMENT
Latest Questions
- Discuss the significance of a proposal What elements do you think are needed for the proposal...
- 1) Given the following equations: QD = 5,000 + 0.5 I + 0.2 A -...
- How has the Supreme Court's Citizens United decision changed campaigns in America? (long answer is appreciated...
- You are a Derivatives Trader at a major Broker-Dealer. At the end of the week you...
- What are the two reasons that limit the ability of correlational studies to provide information on...
- Suppose that 20 monthly payments of $100 each are followed by 30 monthly payments of $200...
- D. Explain what it means for recommendations to be specific and actionable. E. Discuss how charts...
ADVERTISEMENT