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.
Posts
No comments:
Post a Comment