Homework Help is Here – Start Your Trial Now!
Engineering
Mechanical Engineering
Q3) Steam at a pressure of 20 bar and 250°C enters a turbine and leaves it finally at a pressure of 0.05 bar. Steam is bled off at pressures of (5, 1.5 and 0.3 bar). Assuming (i) that the condensate is heated in each heater upto the saturation temperature of the steam in that heater, (ii) that the drain water from each heater is cascaded through a trap into the next heater on the low pressure side of it, (iii) that the combined drains from the heater operating at 0.3 bar are cooled in a drain cooler to condenser temperature, calculate the following: (i) Mass of bled steam for each heater per kg of steam entering the turbine (ii) Thermal efficiency of the cycle, (iii) Thermal efficiency of the Rankine cycle (iv) Theoretical gain due to regenerative feed heating, (v) Steam consumption in kg/kWh with or without regenerative feed heating, and (vi) Quantity of steam passing through the last stage nozzle of a 50000 kW turbine with and without regenerative feed heating. 1 kg u r b in e 2 1-m, 1-m, - m2 1-m, - m,-m, m,, h, m2, h2 m3, h, Condenser m, + m2+ m3 h, 2 wwww www 1 kg, h 1 kg ww ellet Drain cooler m,, h (m, + m2), h (m, + m2+ m3), h

Q3) Steam at a pressure of 20 bar and 250°C enters a turbine and leaves it finally at a pressure of 0.05 bar. Steam is bled off at pressures of (5, 1.5 and 0.3 bar). Assuming (i) that the condensate is heated in each heater upto the saturation temperature of the steam in that heater, (ii) that the drain water from each heater is cascaded through a trap into the next heater on the low pressure side of it, (iii) that the combined drains from the heater operating at 0.3 bar are cooled in a drain cooler to condenser temperature, calculate the following: (i) Mass of bled steam for each heater per kg of steam entering the turbine (ii) Thermal efficiency of the cycle, (iii) Thermal efficiency of the Rankine cycle (iv) Theoretical gain due to regenerative feed heating, (v) Steam consumption in kg/kWh with or without regenerative feed heating, and (vi) Quantity of steam passing through the last stage nozzle of a 50000 kW turbine with and without regenerative feed heating. 1 kg u r b in e 2 1-m, 1-m, - m2 1-m, - m,-m, m,, h, m2, h2 m3, h, Condenser m, + m2+ m3 h, 2 wwww www 1 kg, h 1 kg ww ellet Drain cooler m,, h (m, + m2), h (m, + m2+ m3), h

Elements Of Electromagnetics
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
icon
Related questions
Question
Q3) Steam at a pressure of 20 bar and 250°C enters a turbine and leaves it finally at a pressure of 0.05 bar. Steam is bled off at pressures of (5, 1.5 and 0.3 bar). Assuming (i) that the condensate is heated in each heater upto the saturation temperature of the steam in that heater, (ii) that the drain water from each heater is cascaded through a trap into the next heater on the low pressure side of it, (iii) that the combined drains from the heater operating at 0.3 bar are cooled in a drain cooler to condenser temperature, calculate the following: (i) Mass of bled steam for each heater per kg of steam entering the turbine (ii) Thermal efficiency of the cycle, (iii) Thermal efficiency of the Rankine cycle (iv) Theoretical gain due to regenerative feed heating, (v) Steam consumption in kg/kWh with or without regenerative feed heating, and (vi) Quantity of steam passing through the last stage nozzle of a 50000 kW turbine with and without regenerative feed heating. 1 kg u r b in e 2 1-m, 1-m, - m2 1-m, - m,-m, m,, h, m2, h2 mg, h3 Condenser m, + m2+ m3 h, 2 wwww wwww 1 kg, h 1 kg ww eelet Drain cooler m,, h, (m, + m2), h (m, + m2+ m3), h
Transcribed Image Text:Q3) Steam at a pressure of 20 bar and 250°C enters a turbine and leaves it finally at a pressure of 0.05 bar. Steam is bled off at pressures of (5, 1.5 and 0.3 bar). Assuming (i) that the condensate is heated in each heater upto the saturation temperature of the steam in that heater, (ii) that the drain water from each heater is cascaded through a trap into the next heater on the low pressure side of it, (iii) that the combined drains from the heater operating at 0.3 bar are cooled in a drain cooler to condenser temperature, calculate the following: (i) Mass of bled steam for each heater per kg of steam entering the turbine (ii) Thermal efficiency of the cycle, (iii) Thermal efficiency of the Rankine cycle (iv) Theoretical gain due to regenerative feed heating, (v) Steam consumption in kg/kWh with or without regenerative feed heating, and (vi) Quantity of steam passing through the last stage nozzle of a 50000 kW turbine with and without regenerative feed heating. 1 kg u r b in e 2 1-m, 1-m, - m2 1-m, - m,-m, m,, h, m2, h2 mg, h3 Condenser m, + m2+ m3 h, 2 wwww wwww 1 kg, h 1 kg ww eelet Drain cooler m,, h, (m, + m2), h (m, + m2+ m3), h
Expert Solution
steps

Step by step

Solved in 7 steps with 11 images

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Knowledge Booster
Power Plant Engineering
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
Recommended textbooks for you
Elements Of Electromagnetics
Elements Of Electromagnetics
Mechanical Engineering
ISBN:
9780190698614
Author:
Sadiku, Matthew N. O.
Publisher:
Oxford University Press
Mechanics of Materials (10th Edition)
Mechanics of Materials (10th Edition)
Mechanical Engineering
ISBN:
9780134319650
Author:
Russell C. Hibbeler
Publisher:
PEARSON
Thermodynamics: An Engineering Approach
Thermodynamics: An Engineering Approach
Mechanical Engineering
ISBN:
9781259822674
Author:
Yunus A. Cengel Dr., Michael A. Boles
Publisher:
McGraw-Hill Education
Control Systems Engineering
Control Systems Engineering
Mechanical Engineering
ISBN:
9781118170519
Author:
Norman S. Nise
Publisher:
WILEY
Mechanics of Materials (MindTap Course List)
Mechanics of Materials (MindTap Course List)
Mechanical Engineering
ISBN:
9781337093347
Author:
Barry J. Goodno, James M. Gere
Publisher:
Cengage Learning
Engineering Mechanics: Statics
Engineering Mechanics: Statics
Mechanical Engineering
ISBN:
9781118807330
Author:
James L. Meriam, L. G. Kraige, J. N. Bolton
Publisher:
WILEY
SEE MORE TEXTBOOKS