Pneumatic systems can operate on which of the following substances?

Pneumatic systems primarily utilize gases to transmit power and perform work, with compressed air being the most common medium. Compressed air is effective in a variety of applications because it is readily available, safe to handle, and can be easily stored under pressure.

In pneumatic systems, compressed air acts as the driving force, allowing for the operation of tools, cylinders, and actuators that convert the energy of the compressed air into mechanical work. Using compressed air also ensures that the system can achieve a high power-to-weight ratio, making pneumatic systems efficient and versatile in various industrial and manufacturing applications.

While gases like hydrogen and carbon dioxide can technically be used in certain contexts, they are not typical choices in standard pneumatic systems due to safety concerns, storage challenges, and the specific operating requirements of the tools and devices designed for air pressure. Alcohol, being a liquid, is unsuitable for pneumatic systems, which rely on the compressibility and flow properties of gases. Therefore, compressed air is the standard and most reliable choice for the operation of pneumatic systems.