LIVE Course for free

Rated by 1 million+ students
Get app now
JEE MAIN 2023
JEE MAIN 2023 TEST SERIES
NEET 2023 TEST SERIES
NEET 2023
CLASS 12 FOUNDATION COURSE
CLASS 10 FOUNDATION COURSE
CLASS 9 FOUNDATION COURSE
CLASS 8 FOUNDATION COURSE
0 votes
40 views
in General by (24.2k points)
closed by
Axial flow compressor has the following advantage over centrifugal compressor:
1. Larger air handling ability per unit frontal area
2. Higher pressure ratio per stage
3. Aerofoil blades are used
4. Higher average velocities

1 Answer

0 votes
by (24.2k points)
selected by
 
Best answer
Correct Answer - Option 1 : Larger air handling ability per unit frontal area

Explanation:

  • In an axial flow compressor, the flow proceeds throughout the compressor in a direction essentially parallel to the axis of the machine.
  • Axial flow compressors are used in all larger gas turbine units because of their high efficiency and capacity (larger air handling ability).
  • Centrifugal compressors are more stable than axial flow ones but of much low capacity and not as efficient.

Aspect of comparison

Axial flow compressor

Centrifugal compressor

Type of flow

Parallel to the axis

Radial

Pressure Ratio/Stage

About 1.25

5

Isentropic efficiency

Higher (86 to 90%)

Lower (80 to 82%)

Frontal area

Smaller

Larger

Mass flow rate

Large (>100 kg/s)

Small (<15 kg/s)

Flexibility of operation

Limited

Higher

Part load performance

Poor

Better

Starting Torque

High

Low

Suitability for multistage

More suitable

Difficult

Delivery pressure

Lower (20 bar)

Higher (about 40 bar)

Applications

Jet engines, stationary industrial gas turbine power plants and steel mills

Steel mills, low-pressure refrigeration, Big central air-conditioning plants, fertilizer industry, IC engines

Fixing and manufacturing

Not easy

Easy

Cost

Very expensive

Cheap

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.

Categories

...