6 (b) Throttling 10 kg/s of steam at 20 bar, 250°C reduces the power output of the turbine (a shown in the figure) by 20%. The turbine has an isentropic efficiency of 0.8 and the ex pressure of the turbine is 10 kPa. Steam @20 bar, 250°C Throttle Turbine 10 kPa i. Compute the power output when the steam is not throttled. ii. Compute the quality and enthalpy at the exit of the turbine in the throttlec operation. iii. Compute the rate of irreversibility in the throttle, taking the ambient temperature to be 300 K. v (m/kg) h (kJ/kg) 2902.46 s (kJ/kgK) T°C P bar u (kJ/kg) 250 20 0.11144 2679.58 6.5452 hig (kJ/kg) St (kJ/kg-K) Stg (kJ/kg-K) 7.5010 P kPa T°C h; (kJ/kg) 10 45.81 191.81 2392.82 0.6492

6 (b) Throttling 10 kg/s of steam at 20 bar, 250°C reduces the power output of the turbine (a shown in the figure) by 20%. The turbine has an isentropic efficiency of 0.8 and the ex pressure of the turbine is 10 kPa. Steam @20 bar, 250°C Throttle Turbine 10 kPa i. Compute the power output when the steam is not throttled. ii. Compute the quality and enthalpy at the exit of the turbine in the throttlec operation. iii. Compute the rate of irreversibility in the throttle, taking the ambient temperature to be 300 K. v (m/kg) h (kJ/kg) 2902.46 s (kJ/kgK) T°C P bar u (kJ/kg) 250 20 0.11144 2679.58 6.5452 hig (kJ/kg) St (kJ/kg-K) Stg (kJ/kg-K) 7.5010 P kPa T°C h; (kJ/kg) 10 45.81 191.81 2392.82 0.6492

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Related questions

Q: Part b) Air enters an adiabatic turbine at 11.3 MPa, 300 K, and exits at 3.75 MPa, 240 K. Use the…

Q: Sketch and label numbers on the turbine. -Sketch and label numbers on the process on a T-s diagram.…

A: Given that, Properties of steam at inlet of turbine:P1=1800 kPa, T1=400 °C,Properties of steam at…

Q: A turbojet engine is shown in the figure below. The conditions at State 1 are 300K, 100 kPa. The…

A: The pressure at point 1 is The temperature at state 1 is The pressure ratio for compressor is The…

Q: A well insulated steam turbine receives steam at temperature T1 = 540 °C and pressure p1= 30 bar.…

A: A turbine is a thermodynamic equipment which converts the thermal energy of the steam into useful…

Q: A back-pressure steam turbine is used to expand HPS (high pressure steam) isentropically from a…

A: Given- P1=60barT1=450°CSteam is in superheated stateFrom the steam…

Q: Steam at 4 Mpa and 300oC enters a turbine and expands isentropically to 100 Kpa. Find the turbine…

Q: Muhammad is a Mechanical Engineering major at UCR, and his team just got their butts kicked by an ME…

A: Solution:-As per questions description.The P.V diagram d-muhammad's power cycle is -shown below.At…

Q: Problem 5: The compressor used in a refrigeration cycle takes in saturated R-134a vapor at a…

A: The mass flow rate m˙=0.048 kgs The power requirement W=1450 W The entry pressure of the R-134a in…

Q: use steam tables in English units or EES. a. Saturated steam at 445 ⁰F is throttled adiabatically to…

A: ''Since you have posted multiple questions, we will provide the solution only to the first question…

Q: In a turbojet engine, what are the assumptions for static & stagnation temperatures and pressures…

A: This question is based on the concept of turbine and compressor.

Q: ! Required information NOTE: This is a multi-part question. Once an answer is submitted, you will be…

Q: Consider a cylinder of a gasoline engine at the beginning of the compression cycle, during which a…

Q: Air is compressed from 140 kPa and 320 K to 1200 kPa in a two stage compressor with intercooling…

A: Here we have simply used the temperature pressure relationship for the isentropic process. And the…

Q: efficiency and pres Explain each of the processes on the T-s diagram.

A: Given: Gas turbine cycle Describe the processes.

Q: Adiabatic steam turbine has inlet of 6 kg/s at 5 MPa, 600 oC. The actual steam exit from turbine is…

Q: Air at a 800 kPa and 1300 K enters a turbine which has an isentropic efficiency of 90% with a mass…

A: The inlet pressure in turbine is The inlet temperature is .The isentropic efficiency is .The mass…

Concept explainers

Applied Fluid Mechanics

A fluid is a substance that is continuously deformed by the application of shear stress. The rate of deformation of a fluid depends on its viscosity. The fluid tries to flow when it interacts with some other system.

Question

6 (b) Throttling 10 kg/s of steam at 20 bar, 250°C reduces the power output of the turbine (a
shown in the figure) by 20%. The turbine has an isentropic efficiency of 0.8 and the ex
pressure of the turbine is 10 kPa.
Steam @20 bar, 250°C
Throttle
Turbine
10 kPa
i.
Compute the power output when the steam is not throttled.
ii.
Compute the quality and enthalpy at the exit of the turbine in the throttlec
operation.
iii.
Compute the rate of irreversibility in the throttle, taking the ambient temperature to
be 300 K.
v (m/kg)
h (kJ/kg)
2902.46
s (kJ/kgK)
T°C
P bar
u (kJ/kg)
250
20
0.11144
2679.58
6.5452
hig (kJ/kg)
St (kJ/kg-K) Stg (kJ/kg-K)
7.5010
P kPa
T°C
h; (kJ/kg)
10
45.81
191.81
2392.82
0.6492

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

Step 2

Step 3

Step 4

Step 5

Step 6

Trending now

This is a popular solution!

Step by step

Solved in 6 steps with 14 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.

Similar questions

4. A two-stage air compressor with an intercooler takes in air at 14.6 psia at 62 degree F anddelivers it at 502 psia. The temperature of the air leaving the intercooler is 62 degree F.Calculate the work required per pound of air delivered if compression isisentropic, ft-lbf/lbA. (-)108,072 ft-lbf/lb C. (-)168,072 ft-lbf/lbB. (-)118,072 ft-lbf/lb D. (-)128,072 ft-lbf/lb
Draw a Temperature (T) versus Entropy (s) diagram for a typical gas turbine. Thediagram should show the processes for an actual gas turbine and should show theeffect of real world losses where the compressor and turbine have an isentropicefficiency and pressure losses in the combustion chamber in an actual gas turbine.Explain each of the processes on the T-s diagram.
How do I do this questions in steps? Stuggling with how to find the isentropic work for the efficiency of the turbine. Please have written out or neat solutions that arent copied and pasted math.
superheated steam enters the turbine at 873K and 18MPA. Find the isentropic efficiency of the following turbine. Also find T2 and turbine actual power output. The flow rate is 10 kg/s. It exists as saturated vapor at 393K. hint: the isentropic case should exit as high quality mixed phase.
I need a clear and fast answer within 20 minutes. Thank you