Question
In: Mechanical Engineering
A gas turbine receives 10 kg/s of helium and expands it polytropically (n = 1.8) from...
A gas turbine receives 10 kg/s of helium and expands it polytropically (n = 1.8) from 1100K and 600 kPa to 100 kPa. Determine the power produced, the entropy change of the helium through the gas turbine (kW/K) and the entropy change of the surroundings (kW/K).
answer: 28,221 kW, 10.53 kW/K (Engineering thermodynamics)
Solutions
samet mamat answered 2 years agoRelated Solutions
A gas turbine receives 10 kg/s of helium and expands it polytropically (n = 1.8) from...
A gas turbine receives 10 kg/s of helium and expands it
polytropically (n = 1.8) from 1100K and 600 kPa to 100 kPa.
Determine the power produced, the entropy change of the helium
through the gas turbine (kW/K) and the entropy change of the
surroundings (kW/K).
Air enters the turbine of a gas turbine at 1400 kPa, 1400 K, and expands to...
Air enters the turbine of a gas turbine at 1400 kPa, 1400 K, and
expands to 100 kPa in two stages. Between the stages, the air is
reheated at a constant pressure of 350 kPa to 1400 K. The expansion
through each turbine stage is isentropic.
Determine:
(b) the heat transfer for the reheat process, in kJ/kg of air
flowing.
(c) the increase in net work as compared to a single stage of
expansion with no reheat.
A steam turbine receives steam from two boilers. One flow is 5 kg/s at 3 MPa,...
A steam turbine receives steam from two boilers.
One flow is 5 kg/s at 3 MPa, 700°C and the other flow is 15 kg/s
at 800 kPa, 500°C.
The exit state is 10 kPa, with a quality of 96%.
Calculate the efficiency of the turbine and the total
power output.
A steam turbine receives steam from two boilers. One flow is 5 kg/s at 3 MPa,...
A steam turbine receives steam from two boilers. One flow is 5
kg/s at 3 MPa, 700°C and the other flow is 15 kg/s at 800 kPa,
500°C. The exit state is 10 kPa, with a quality of 96%. Find the
total power out of the adiabatic turbine. Calculate the efficiency
of the turbine
A steam turbine receives 8 kg/s of steam at 9 MPa, 650 C and 60 m/s...
A steam turbine receives 8 kg/s of steam at 9 MPa, 650 C and 60
m/s (pressure, temperature and velocity). It discharges
liquid-vapor mixture with a quality of 0.94 at a pressure of 325
kPa and a velocity of 15 m/s. In addition, there is heat transfer
from the turbine to the surroundings for 560 kW. Find the power
produced by the turbine and express it in kW
An adiabatic gas turbine uses air to produce work. Air expands adiabatically from 600 kPa and...
An adiabatic gas turbine uses air to produce work. Air expands
adiabatically from 600 kPa and 287 C to 90 kPa and 67 C. Take
specific heats at room temperature (300 K). a) Find the isentropic
efficiency of the turbine. b) Find the work produced by the turbine
for a mass flow rate of 2.5 kg/s. c) If the mass flow rate of air
is again 2.5 kg/s, find the entropy generation under steady
conditions
An adiabatic steam turbine receives 50 kg/s of superheated steam at 5 MPa and 500oC. Steam...
An adiabatic steam turbine receives 50 kg/s of superheated steam
at 5 MPa and 500oC. Steam exits the turbine with a pressure of 100
kPa. Determine the minimum exit quality and the maximum power
output of the turbine in kW.
A steam turbine receives superheated steam at 18.0 kg/s, 500.°C, and 3.00 MPa and exhausts it...
A steam turbine receives superheated steam at 18.0
kg/s, 500.°C, and 3.00 MPa and exhausts it to 10 kPa with a quality
of 96%. If the turbine is assumed to be internally reversible,
determine the rate of heat loss from the turbine surface if the
power output is 20.MW The surface temperature of the turbine is
uniform at 350.°C, and the local environment (ground state) is
taken to be saturated liquid water at T0 = 20.0°C. Neglect all flow
stream...
A gas turbine expands air adiabatically at 1000 kPa and 550 ⁰C to 120 kPa and...
A gas turbine expands air adiabatically at 1000 kPa
and 550 ⁰C to 120 kPa and 130⁰C. Air enters the
turbine through a 0.25 m
2 opening with an aveage velocity of 45 m/s, and exhausts through a
1 m2
opening. Assume the air is ideal gas with constant specific heats.
Take the constant pressure specific
heat and gas constant of air as Cp= 1.05 kJ/(kg K) and R=0.287
kJ/(kg K), respectively. Determine;
(a) the mass flow rate of air...
Air enters a turbine operating at steady state at 10 bar, 1200 K and expands to...
Air enters a turbine operating at steady state at 10 bar, 1200 K
and expands to 0.8 bar. The turbine is well insulated, and kinetic
and potential energy effects can be neglected. Assuming ideal gas
behavior for the air, what is the maximum theoretical work that
could be developed by the turbine in kJ per kg of air flow?
ADVERTISEMENT
ADVERTISEMENT
Latest Questions
- A sample human input file that contains test values that a human would enter on the...
- A solution is prepared by dissolving 15 ml of methanol in 150.0 ml water at 25...
- Consider a newlywed who is planning a wedding anniversary gift of a trip to Canada for...
- We are evaluating a project that costs $868,000, has a life of eight years, and has...
- a.) Given sample data: 61.2, 61.9, 62.8, 63.1, 64.0, 64.3, 64.9, 65.5, 66.3 and 67.9, test...
- A research paper describes an experiment in which 74 men were assigned at random to one...
- 1. Which components would a retail organization consider while surveying/assessing the suitability of its products for...
ADVERTISEMENT