The Concept and Application of the Free Piston Compressor
Introduction
A free piston compressor, also known as a free piston Stirling engine, is a variant of the traditional reciprocating engine, typically used in applications where small amounts of energy or power are needed such as on board vehicles or compact electrically driven pumps. It is similar to a normal piston engine in its working principle, but instead of the piston being attached to a crankshaft, it is allowed to move freely within the cylinder with the only restriction being the forces of inertia. As a result, the motion of the piston is smoother and more efficient, with very few moving parts and no lubrication required. In addition, the system is more efficient and requires less maintenance than a traditional reciprocating engine.
Description
The concept of a free piston compressor is an assembly of two cylinders with their pistons able to move freely back and forth between them, powered by an external source. The two cylinders are connected by a common cylinder head and two valves. One of the valves is an inlet valve and the other is an outlet valve. Fuel is injected into the cylinder through the inlet valve and then is compressed by the force of the piston movement, increasing the pressure and density of the air inside the cylinder. The outlet valve then opens to allow the compressed air to escape from the cylinder and into the atmosphere.
The free piston Stirling engine is capable of producing very stable temperatures and pressures for long periods of time, making it suitable for use in applications that require a constant, steady supply of power such as on board vehicles. The engine is also lighter and more compact than a traditional piston engine, making it well suited to applications where space is at a premium.
Applications
Free piston compressors are primarily used in applications that require small amounts of energy or power, such as on board vehicles, medical equipment and compact electrically driven pumps. They are ideal for applications such as medical equipment due to their efficiency and low running costs, meaning that they can operate for extended periods of time with minimal maintenance or fuel costs.
The free piston compressor is also well suited to use in the smallscale generation of electricity. By using an alternator, the free piston compressor can generate electricity for powering small electronic devices such as mobile phones or laptop computers. This is especially beneficial for use in remote areas where access to a traditional power supply is not available.
Conclusion
The free piston compressor is a relatively new concept in the world of reciprocating engines, but one that has great potential to be utilized in a variety of applications. It is simpler in design than a traditional piston engine, requires less maintenance and is more efficient in operation. Furthermore, its scalability and ability to generate electricity make it well suited to a host of applications. The free piston compressor, then, is poised to revolutionize the world of reciprocating engines and the applications they are used in.
