Translate

Compressors Interview Questions 1 contains questions about Compressors centrifugal compressors ,  reciprocating compressor,  inter cooler of a compressor, after cooler of a compressor,  pre-filters and after filters of an instrument air system, desiccant use in instrument drier system, which asked in interview.

1. Why do centrifugal compressors need to operate at higher speed than centrifugal pumps?
2. What is the function of a un loader switch of a reciprocating compressor?
3. What is the purpose of an inter cooler of a compressor?
4. What is the purpose of an after cooler of a compressor?
5. What are the functions of pre-filters and after filters of an instrument air system?
6. What type of desiccant those generally use in instrument drier system?

1. Why do centrifugal compressors need to operate at higher speed than centrifugal pumps?

Centrifugal compressors use gas to compress. Gas is lighter than liquid. So centrifugal compressors need high speed than pumps.

2. What is the function of a un loader switch of a reciprocating compressor?

An un loader switch of a reciprocating compressor prevent over loading of compressor by keeping suction valve open, in case of pressure above set limit, till it reaches below normal operating pressure.

3. What is the purpose of an inter cooler of a compressor?

Inter cooler will help to cool discharge gas / air between one stage to another stage.

4. What is the purpose of an after cooler of a compressor?

After cooler is used to reduce the temperature of a compressed gas / air from the final stage of compression.

5. What are the functions of pre-filters and after filters of an instrument air system?

Pre- filter before drier is used to remove oil mist and liquid from compressed air and after filter is used to remove any suspended particles from the drier unit to supply a high quality clean air for instrument system

6. What type of desiccant those generally use in instrument drier system?

Activated alumna or silica gel.

Continued...

Thanks for reading - Compressors Interview Questions 1
Naitik Patel
Industrial Guide

Share this blog with your friends from here 👇

Previous Post Next Post