Types of compressors pdf

However, the various compressor types and their attributes often cause confusion for data center managers and operators. For example, it is widely believed that there are only two types of compressors, namely “constant speed” and “variable speed”. The primary difference is the service in which they are used.

Pumps are used to move liquids and slurries, while compressors are used in gas or vapor service. The two most common types of compressors are positive displacement and dynamic.

Positive displacement compressors use screws , sliding vanes , lobes , gears,. In the oil and natural gas sector, the most prevalent types of compressors used are reciprocating and centrifugal compressors. Piston type compressors generally operate in the 3to 8rpm range utilizing 4. Compressors may be characterized in several different ways, but are commonly divided into types based on the functional method used to generate the compressed air or gas. Types of Air Compressor. In the sections below, we outline and present the common compressor types.

Main types of compressors used in industrial refrigeration are screw , piston , centrifugal and rotary vane.

Another type, which is produced in large quantities, a scroll compressor , but still these compressors are not available in the amount normally encountered in industrial refrigeration. The reciprocating compressor is the most popular type of AC compressor. A piston compresses the air by moving up and down inside of a cylinder. As the piston moves down, it creates a vacuum effect that sucks in the refrigerant.

Rotary Screw Compressors. The most common rotary air compressor is the single stage helical or spiral lobe oil flooded screw air compressor. These compressors consist of two rotors within a casing where the rotors compress the air internally. It uses two Asymmetrical rotors that are also called helical screws to compress the air. Major types of reciprocating compressors include reciprocating single acting, reciprocating diaphragm and reciprocating rocking piston type. as PDF File (. pdf ), Text File (.txt) or read online for free.

When the air passes through the rotating impeller it experiences force or work which is performed by centrifugal forces. Most opto compressors don’t have total control over the attack and release settings, like the LA-2A which is arguably the most well known and highly regarded compressor of all time. What we need to realize is that this system, along with many of the other applications that we use on an everyday basis, makes use of air compressors.

Vertically split casing (barrel-type compressors ). These are used when the working pressure and type of gas demand such an arrangement.

All internal parts are similar to the horizontally split type casing, but the diaphragm seals and the rotor bundle are inserted axially in a forged steel barrel casing. These work by increasing air pressure by reducing the space that contains the air. If you’re familiar with the workings of an internal combustion engine,. A compressor is a mechanical device that increases the pressure of a gas by reducing its volume. An air compressor is a specific type of gas compressor.

Compressors are similar to pumps: both increase the pressure on a fluid and both can transport the fluid through a pipe.