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Pneumatics and hydraulics are fluids that are used in power systems. They are very similar to each other in both their capabilities and their operation. In this article we will discuss their application fields and working principles.

Pneumatics

Pneumatics are a type of fluid power system that utilize pressurized gas or air to operate machines. The application fields for pneumatics are diverse and can span from vehicle braking systems, air-cooled engines, pneumatic riveting systems, robotics, and air-powered tools. They are often used in applications where the power requirement is not particularly high and where electric motors tend to be too expensive, bulky, or even hazardous.

Pneumatics rely on the air pressure of the compressed gas to generate force or movement. The pressure of the compressed gas is converted into kinetic energy with the help of a pneumatic control valve that opens and closes the circuit depending on the pressure, flow rate and the position of the actuator.

Hydraulics

Hydraulics are another type of power system that utilizes a liquid to generate force or motion. They are usually found in machinery and vehicles that require a large amount of force to operate such as pumps, machining tools, cranes, and other heavy machinery.

In hydraulics, the pressure of the liquid is utilized to generate power and movement. The pressure of the liquid is converted into kinetic energy by using a hydraulic control valve. Similar to pneumatics, the valve for hydraulics opens and closes depending on the pressure, flow rate and the position of the actuator. When the pressure is increased in the system, the control valve opens and liquid is allowed to enter into the actuator, and when the pressure is decreased, the control valve closes and the liquid is forced out of the actuator.

Hydraulics and pneumatics offer a variety of applications for both consumers and industry. However, it is important to note that the two systems are quite different from one another. While pneumatics require pressurized gas, hydraulics require pressurized liquids. Furthermore, the operating principles are different for each system as well as the control elements.

In conclusion, pneumatics and hydraulics are both fluid power systems. They both have their own applications fields and working principles. Pneumatics utilizes pressurized gas or air to generate power and hydraulics utilizes pressurized liquids. Knowing how each system works and its applications can help to make the best decision when choosing a power system.