What type of systems exhaust air to the atmosphere after performing work?

Pneumatic systems are designed to use compressed air to perform work, such as moving actuators or tools. After this work is completed, the air that was compressed is released back to the atmosphere, which is a characteristic feature of these systems.

In pneumatic systems, the working fluid is air, which is compressible and can easily be exhausted back to the environment after it has done its job. This allows for the immediate retrieval of usable energy and ensures efficient operation without the need for recycling the air that is expelled.

In contrast, hydraulic systems use incompressible fluid, typically oil, which is not expelled into the atmosphere in the same manner as air in pneumatic systems. Fluid systems may refer to general systems that can include either hydraulic or pneumatic systems, and directional control systems focus on the pathways for fluid or air, but do not specify the exhaust nature. Thus, pneumatic systems are distinctive in that they exhaust air directly into the atmosphere after completing their tasks.