Compressor

Plant Utilities and Maintenance

Presenter Hazrul Adzfar Shabri 55201112104Siti Norlaila Faeizah Mohd Rudin 55202112056Irdani Idris 55201112111

Content

• Introduction• Compressor• Function• Type of compressor• Maintenance• Conclusion• Safety

Introduction

• CompressorA mechanical device that increase the pressure of a fluid by reducing the volume

• Almost similar to pump– Main action pump=pressurize fluid to transport– Main action compressor=pressurize fluid by

reducing the volume

Function

• Provide high pressure gas to plant– low pressure steam to high pressure steam (steam

reforming)• Reduce volume of gas– For transport (LNG)– Processing (Compress gas, increase pressure,

increase concentration)• Maintain pressure of gas• Pressurize water in boiler (Carnot cycle)

Function

• Cooling/heating system that use refrigerant– Compress gas refrigerant, condensing the gas

releasing the heat

Type of compressor

• Positive displacement– Compress gas by reducing the volume

• Dynamic– Change the velocity of gas to pressure

Positive displacement

• Reciprocating

• Rotary

Dynamic

• Centrifugal

• Axial

Maintenance

• Preventive maintenance checks• Important• Save time and money– Avoid possible breakdown– Maintains efficiency, saving money, maintaining

ouput

• Lubrication – Pump oil– Regular checking (Daily)– Oil level

• Leak– Oil– Air

• Drain water (water vapour in air may condensate when air is compressed)

• Belt (timing, power)

• Air Filter– Check air filter for dust or breaking (weekly)• Clean or replace

– Check to ensure accurate air flow rate– Safety relief valve– Leak

• Check (daily weekly)– Noise– Vibration– Connection for leaks– Bolts and screw are tightened

• Service pump Oil (Annually)

• Cooling system– Compressed gas get hotter– Cooling system for example water cooling system

• Gauge– Check and calibrate pressure gauge– Ensure accurate reading– Not overwork/overpressure the compressor

Safety

• Before maintenance operation– Ensure all electrical connection disconnected– Ensure compressor is relieved from any pressure– Ensure temperature cooled down

Conclusion

• Compressor increase the pressure of gas by decreasing the volume

• Two type of compressor design; dynamic and positive displacement

• Maintenance important; save money and time for future

• Check: lubrication, air inlet, cooling system, gauge, connection, noise, vibration, screw

• Safety-disconnect electricity, relieve pressure, cool down temperature

References• Mobil Industrial (2013). Air Compressor Care and Maintenance Tips. [Online].[Accessed 5

October 2013]. Available from World Wide Web <http://www.mobilindustrial.com/ind/english/files/tt-air-compressor-maintenance.pdf>

• Arizona Pneumatic (2013). Air Compressor Maintenance [Online].[Accessed 5 October 2013]. Available from World Wide Web < http://www.arizonapneumatic.com/air-compressor-maintenance.html >

• Portland Compressor (2013). Air Compressor Maintenance[Online].[Accessed 5 October 2013]. Available from World Wide Web < http://www.portlandcompressor.com/compressor/maintenance.aspx >

• McQuary (2013) Centrifugal Compressor Technology[Online].[Accessed 5 October 2013]. Available from World Wide Web < http://www.ashrae.gr/PresentationNo2(Centri)version2.pdf >

• Quincy Compressor (2013) Air Compressor.[Online].[Accessed 5 October 2013]. Available from World Wide Web < http://www.me.ua.edu/me416/s09/pdf/Air%20Compressors.pdf >

• Hvac Education Australia (2013). Vapour Compression system.[Online].[Accessed 5 October 2013]. Available from World Wide Web < http://www.hvaceducationaustralia.com/Units/j103A%20.html>