COMPRESSOR
*Compressors are mechanical devices that compresses gases. It is widely used in industries and variant applications.
*Compressors handles the gases and pumps handles the liquids. Liquids are relatively incompressible.
*Compressors have many everyday uses, such as Air Conditioners, Home and Industrial Refrigeration.
Types of compressor
1. Reciprocating Compressor
*Reciprocating air compressors are positive displacement machines, meaning that they increase the pressure of the air by reducing its volume.
*Reciprocating compressors use pistons driven by a crankshaft. They can be either stationary or portable, can be single or multi-staged, and can be driven by electric motors or internal combustion engines.
*Reciprocating compressors often have the lowest up-front cost, but the highest operating cost!
2. Rotary Screw Compressor
*A rotary screw compressor is a type of gas compressor which uses a rotary type positive displacement mechanism .
*Rotary screw compressors use two meshed rotating positive-displacement helical screws to force the gas into a smaller space.
3. Centrifugal Compressor
*The centrifugal air compressor is a dynamic compressor which depends on transfer of energy from a rotating impeller to the air.
*The Centrifugal compressor achieves a pressure rise by adding kinetic energy / velocity to a continuous flow of fluid through the rotor or impeller. This kinetic energy is then converted to an increase in potential energy/static pressure by slowing the flow through a diffuser.
4. Axial Flow Compressor
*Axial-flow compressors are dynamic rotating compressors that use arrays of fan-like airfoils to progressively compress the working fluid.
*They are used where there is a requirement for a high flow rate or a compact design. However, they are relatively expensive, requiring a large number of components, tight tolerances and high quality materials.
5. Scroll Compressor
*A scroll compressor, also known as scroll pump and scroll vacuum pump, uses two interleaved spiral-like vanes to pump or compress fluids such as liquids and gases.
