Refrigeration and Air Conditioning Terminology

SDS

• Safety Data Sheet - contains vital information on chemical characteristics and first aid procedures for solvents, chemicals, and refrigerants.

• Standard Data Sheet - a document that lists the standard operating procedures for laboratory experiments.

• Solvent Data Sheet - a guide specifically for the handling of solvents in industrial settings.

• Safety Directive Sheet - a regulatory document outlining safety measures for chemical handling.

GWP

• Global Warming Potential.

• Greenhouse Water Pollution.

• Global Weather Patterns.

• Geothermal Wind Power.

Capillary Tube

• A device that increases pressure in the system to enhance refrigerant flow.

• A passive throttle device comprised of a very small diameter long tube located upstream of the evaporator, that drops pressure in the system, causing refrigerant to flash.

• A component that filters refrigerant before it enters the compressor.

• An active control mechanism that regulates the temperature of the refrigerant.

Asphyxia

• Displacement of oxygen in a room by the denser refrigerant.

• A condition caused by insufficient oxygen in the body.

• A type of respiratory disease.

• A method of artificial respiration.

CFM

• Cubic Feet Per Minute, unit of measuring air velocity.

• Cubic Feet Per Meter, unit of measuring volume.

• Cubic Feet Per Minute, unit of measuring pressure.

• Cubic Feet Per Minute, unit of measuring temperature.

PPM

• Parts per Million, unit of measure.

• Percentage of Parts, metric unit.

• Pulses per Minute, a timing measure.

• Parts per Meter, a length measure.

EPA

• Environmental Protection Agency.

• Environmental Policy Association.

• Energy Protection Agency.

• Environmental Planning Agency.

Dehydrate

• To remove moisture from a system.

• To add water to a substance.

• To preserve food by freezing.

• To increase the temperature of a liquid.

Mixture

• Blend of 2 or more components that do not have a fixed proportion to one another and that no matter how well blended, they still retain a separate existence.

• A combination of elements that are chemically bonded together in a fixed ratio.

• A homogeneous solution where all components are evenly distributed.

• A physical combination of substances that can be separated by physical means.

EXV

• Electronic expansion valve, which throttles refrigerant located upstream of the evaporator.

• Expansion valve used for liquid refrigerant only.

• A valve that controls the flow of air in HVAC systems.

• A type of compressor used in refrigeration systems.