Compressed Air Glossary: E to L

Efficiency Compression: The ratio of the theoretical work requirement to the actual work required to be performed on the gas within the cylinder.

Expanders: Engines or turbines in which gas expands, does work & undergoes a drop in temperature.

Filters: Devices that removes or separate the unwanted liquid & dust from air before it enters the compressor.

Fluidics: The general subject of instruments and controls dependent upon low rate flow of air or gas at low pressure as the operating medium.

Gas Bearings: These are load carrying machine which allows some movement in which the lubricant is air or some other gas.

Guide Vane: An adjustable stationary element that helps direct the flowing medium to the inlet of an impeller.

Gauge Pressure: Pressure determined by instruments or gauges.

Head, Adiabatic: The energy in foot pounds required to compress adiabatically and to deliver one pound of a given gas from one pressure level to another.

High Pressure air: Air which is compressed above 150 PSI.

Humidity Relative: The ratio of the partial pressure of the vapour to the vapour saturation pressure at the dry bulb temperature of the mixture.

Inlet Pressure: The pressure at the inlet flange of the compressor, measured in PSIG.

Intercooling: The removal of heat from gas or air between compressor stages.

Inducer: A curved inlet section on impeller.

Intercoolers: heat exchanger device which removes the heat of compression between the stages of compressor.

kPa: Equal to 1000 Pa.

Liquid Piston: A liquid piston compressor is a rotary compressor in which a vaned rotor revolves in an elliptical casing, with the rotor spaces sealed by a ring of liquid rotating with it inside the casing.

Load Time: Time period from when a compressor loads until it unloads.

Load/Unload Control: Control method that allows the compressor to run at full-load or at no load while the driver remains at a constant speed.

Compressed Air Glossary: A to D

Precise information on compressed air system terms is always valuable. Glossary of terms for people who work with compressed air solution.

Absolute Pressure: The total pressure measured from absolute zero.

Ambient Air: Air or Temperature surrounding you.

Absolute Temperature: Temperature calculated from absolute zero on the Kelvin scale or on Rankine scale.

Absolute Zero: Temperature at lowest possible point. The temperature at which kinetic energy is of atoms & molecule are at minimal.

Aftercooler: The heat exchanger unit which helps cooling the air or gas discharged from compressor before it enters the system.

Actual Capacity: Quantity of gas actually compressed & delivered to the discharge system at given rated speed of machine & under given pressure conditions.

Adiabatic Compression: A type of compression where no heat is transferred to or from the gas during the compression process.

Air cooled compressor: Compressors are cooled by atmospheric air by circulating them around the cylinders or casings.

Air Receivers: A vessel designed to store the compressed air & to permit pressure to be stable in the system.

Air Dryer: Devices which will help absorb water vapour from compressed air.

Automatic Sequencer: A device which operates compressors in sequence according to a programme schedule.

Atmospheric Pressure: The pressure exerted by the atmosphere.

Bar: A unit of pressure used in industry field, which is approximately equal to atmospheric pressure.

Base Plate: A metallic structure on which a compressor or other machine is mounted.

Booster Compressor: A machine which helps compressing air or gas from an initial pressure to much higher pressure.

Boss hose fitting: Threaded fitting which connects hose from compressor or extended hose for flow of gas.

Capacity: The amount of air flow delivered from compressor under specific conditions & is usually expressed in cubic feet per minute (CFM).

Casing: The pressure containing stationary element that encloses the rotor & associated internal components of the compressors, and it includes integral inlet and discharge corrections.

Check Valve: A mechanical device which allows the flow of liquid or gas in one direction.

Condensate: Liquid formed in compressor from water vapour due to decrease in temperature &/or increase in pressure.

CFM: Volumetric air flow rate.

Compression Ratio: The ratio of the discharged pressure to the inlet pressure.

Constant Speed Control: A system which runs continuously & matches air supply to demand, by varying compressor load.

Cycle: The series of steps that a compressor performs.

Cut In/Out Pressure: A setting on a pressure discharge used to either load or unload the compressor on a content speed application to either start or stop the machine.

Compressibility: A factor expressing the deviation of gas from the laws of hydraulics.

Compression, Adiabatic: A compression where no heat is transferred to or from the gas during the compression process.

Compression, Isothermal: A compression in which the temperature remains constant. For reversible process the equation PV is constant for perfect gases.

Compression, Polytropic: A graphical relationship between the pressure & volume for various values of specific-heat ratio in a compressor equation pVⁿ = K.

Compression Ratio: The ratio of the discharged pressure to the inlet pressure.

Critical Pressure: It is the saturation pressure at the critical temperature.

Critical Temperature: The highest temperature at which well defined vapor & liquid state exist.

Dew Point: The temperature at which the air gets saturated & changes from vapour to liquid at a given pressure.

Dew Point Suppression: Temperature below ambient.

Desiccant: An adsorption type material which attracts & remove water vapour from the air.

Discharge Pressure: It is the pressure generated on the output side of a gas compressor.

Discharge Temperature: The temperature existing at the discharged port of the compressor.

Dynamic-type Compressors: Air or gas compressed by rotating vanes or impellers.

Compressed Air Solution: Some General Information

Our nations industry have opted for using better & improved equipments to give better results & eliminate energy wastage.

Compressed Air Solution is there best choice for energy source. These energy sources are relatively easy to store, non-flammable & highly powerful. This energy can be used to produce high speed with air actuators or air tools & is enormously versatile in various ways it is used. Compressed air is used everywhere. As these compressed air are safe, it can be carried anywhere with an appropriate air tools.

Compressed Air can perform there work with high speed because when compressed the air gets transform from one energy to other form of energy. This energy is stored & used later. This compressed air is now in imbalanced state & is in high pressure inside compressor receivers.

As our environment has always kept our nature in balance, these imbalances are not accepted by her. So to balance the nature, the compressed air leaves the area with speed of sound, i.e. from an air tank to the required tool, & gets back to its normal atmospheric temperature.

By calculating this flow of air & directing it into air tools, work can be pull out from this compressed air energy as it decompresses back to atmospheric levels.

Compressed air solution can be used around application which involves manufacturing products which are flammable or explosive. Compressed air solutions are always performed by the persons with formal training.

If you are looking for a high force for your application, then the likely pick should be compressed air components as they are less expensive.

Less expensive & more energy is always why not?, for high scale operation.