Differentiate between pneumatic and hydraulic system.
|
Pneumatic System
|
Hydraulic System
|
1 |
Pneumatic system uses gas for power transmission, after compression and it is used as medium for carrying out mechanical work.
|
In hydraulic systems, a liquid-based solution such as oil is used under pressure to carry out work.
|
2 |
The components of these systems are compressor, air receiver, directional control valve, and pneumatic cylinder.
|
The components of these systems are pump, pressure regulation/relief valve, control valve, filter and hydraulic cylinder.
|
3 |
The excess air is vent out to atmosphere.
|
The excess fluid is return back to the tank.
|
4 |
Motor driven compressor is used to pull air from atmosphere.
|
Pump and motor combination is used to pull liquid from tank or reservoir.
|
5 |
External lubricator is required during mechanical motion of cylinder.
|
External lubricator is not require as oil acts as a lubricator.
|
6 |
The system is more costly
|
The system is less costly.
|
7 |
Applications: In industrial applications, air conditioners
|
Applications: In petrochemical industries, oil refineries.
|