compressed air system and air trimming short information

1. Topic – Compressed air system and impeller trimming
MGM’S COLLGE OF ENGINEERING &
TECHNOLOGY
Department Of Mechanical Engineering
Submitted to- Submitted by-
Prof. pradeep bodade Suraj Walanju.
ambik yadav
deepak vishwakarma
karan zanze
akshay zanzane

2. CONTAINTS
• Introduction
• Impeller trimming
• Classification of compressor
• Components of compressed air system
• What is compressor
• Types of compressor
• Methods to improve performance of air compressed
system

3. Introduction
Compressed air systems consist of a number of major
subsystems and components. Compressed air systems
can be subpided into the Supply and Demand side.
The Supply side includes compressors, air treatment
and primary storage.
The Demand side includes distribution piping,
secondary storage and end use equipment.

4. What is trimming
 Impeller trimming refers to the reduction of the
impeller diameter, and thus a reduction of the
circumferential speed at the impeller outlet of a
centrifugal pump.
 Impeller trimming can be used in case the pump
provided is oversized either a mismatch to system load
or changes in system load

5. Types of impeller trimming

6. Classification of compressor

7. Main components of air
compressed system
 Intake air filter
 Inter stage cooler
 After cooler
 Air dryers
 Moisture drain traps
 receiver

8. Functions of each components
 The Air Intake Filter is a device composed of fibrous
materials designed to trap atmospheric airborne particles
such as dust, pollen, mold, etc. before they can reach the
compressor.
 The Air Compressor is a machine used to convert power
(usually from an electric motor, a diesel engine or a
gasoline engine) into kinetic energy by compressing and
pressurizing air, which, on command, can be released in
quick bursts. There are several different types of air
compressors including reciprocating, rotary screw, and
rotary centrifugal.
 .

9. Functions of components
 The After cooler cools the system lubricant and
discharged air.
 The Air Receivers provide compressed air storage
capacity to meet peak demand events and help control
system pressure by controlling the rate of pressure
change in the system.
 The Air Dryer removes condensation from
compressed air in order to prevent damage to the
system

10. Simple Tips for Maintaining
Your Compressed Air System
 It is recommended that your compressed air system be
professionally serviced at least annually ,if it not
get checked properly the system may be damaged
 Keeping air filters clean can lower your compressed
air system’s electricity use by 5 – 15%. Change your
filter every three to six months.

11.  Check your drain traps to make sure these
contaminant removal devices have properly
functioning drains and no blocked lines.
 Check your oil. Just like a car, your air compressor
needs regular oil changes or you risk destroying the
engine.
 Stay Alert for Warning Signs such as unusual noises,
overheating, excessive vibrations or belt slippage.

12. Methods to improve performance
characteristics of compressed air system
 Location and size of filter
The location of compressor and use of filter plays an
important role on amount of energy consumed.
 elevation
Elevation of air compressed system at high altitudes
decrease the volumetric efficiency and increase the
power consumption ,for that elevation is important.

13.  Improving air intake quality, generation and
control
You can increase the efficiency of your system by
introducing more effective generation and control.
Doing this also reduces energy wastage and improves
the performance of the end-use equipment.
 Detecting air leaks
All compressed air systems have leaks. Regularly
testing your system for leaks is one of the most
important ways you can improve energy efficiency and
save money.

14.  Air treatment
Reducing impurities in the air taken in by the
compressor can improve system efficiency, and can
increase the life and performance of end-use
equipment.
 Air receivers and distributors
Air receivers in most systems are sized only with the
compressor in mind. But it's very important that
there's enough 'useful storage' to be able to cope with
varying levels of demand so that pressure fluctuations
are reduced or eliminated.

15.  Waste heat recovery from compressed air
When air is compressed, a huge amount of heat is
generated and often wasted. It's possible to recover
most of this heat and use it elsewhere.
 Monitor compressed air energy use
It's important to monitor the energy consumption of
your system so you can quickly identify if you are
wasting energy. To monitor the system effectively, you
need to install specific pieces of equipment like
pressure gauges and meters.

16.  Variable speed drive
Variable speed drive should be used for capacity control
of compressor to reduce power consumption.
 Use of blower in place of compressed air
Blowers must be used for low pressure application
instead of compressed air e.g. in agitator ,air for
combustion of fuel etc.

17. References
 Best practice for air compressed system by william
scales.
 Compressed air system by afflege