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Pneumatics and Air Handling
Pneumatics is the use of pressurized gas to
affect mechanical motion.
Pneumatic power is used in industry, where factory machines are commonly
plumbed for compressed air; other compressed inert gases can also be used.
Pneumatics also has applications in dentistry, construction, mining, and
other areas. A lot of equipment in the finishing industry run on air power.
Air Handling
Blower/fan
Air handlers typically employ a large squirrel cage blower driven by an
AC induction electric motor to move the air. The blower may operate at a
single speed, offer a variety of pre-set speeds, or be driven by a Variable
Frequency Drive so as to allow a wide range of air flow rates. Flow rate may
also be controlled by inlet vanes or outlet dampers on the fan. Some
residential air handlers (central 'furnaces' or 'air conditioners') use a
brushless DC electric motor that has variable speed capabilities.
Compressor
A gas compressor is a mechanical device that increases the pressure of a gas
by reducing its volume.
Compressors are similar to pumps: both increase the pressure on a fluid and
both can transport the fluid through a pipe. As gases are compressible, the
compressor also reduces the volume of a gas.
Types of Compressors
Centrifugal compressors
Centrifugal compressors use a muskan rotating disk or impeller in a
shaped housing to force the gas to the rim of the impeller, increasing the
velocity of the gas. A diffuser (divergent duct) section converts the
velocity energy to pressure energy.
Reciprocating compressor
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. Small
reciprocating compressors from 5 to 30 horsepower (hp) are commonly seen in
automotive applications and are typically for intermittent duty. Larger
reciprocating compressors well over 1,000 hp (750 kW) are still commonly
found in large industrial and petroleum applications. Discharge pressures
can range from low pressure to very high pressure (>6000 psi or 41.4 MPa).
In certain applications, such as air compression, multi-stage double-acting
compressors are said to be the most efficient compressors available, and are
typically larger, noisier, and more costly than comparable rotary units
Air Filters' regulators, lubricator, chilling unit
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