Trane TRG-TRC016-EN manual Glossary

Glossary

absorbent A substance used to absorb refrigerant and transport it from the low-pressure to the high-pressure side of the absorption refrigeration cycle. In absorption water chillers, the absorbent is commonly lithium bromide.

absorber A component of the absorption refrigeration cycle in which refrigerant vapor is absorbed by the absorbent solution and rejects heat to cooling water.

air-cooled condenser A type of condenser in which refrigerant flows through the tubes and rejects heat to air that is drawn across the tubes.

airside economizer A method of free cooling that involves using cooler outdoor air for cooling instead of recirculating warmer indoor air.

ARI Air-Conditioning and Refrigeration Institute

ARI Standard 550/590 A publication titled Standard for Water Chilling Packages Using the Vapor-Compression Cycle that promotes consistent rating and testing methods for all types and sizes of water chillers. It covers factory- designed, prefabricated water chillers, both air-cooled and water-cooled, using the vapor-compression refrigeration cycle.

ARI Standard 560 A publication titled Absorption Water Chilling and Water Heating Packages that promotes consistent rating methods for many types and sizes of absorption water chillers in which water is the refrigerant and lithium bromide is the absorbent. It covers single-effect chillers operating on steam or a hot fluid; indirect-fireddouble-effect chillers operating on steam or a hot fluid; and direct-fireddouble-effect chillers operating on natural gas, oil, or liquid petroleum (LP).

ASHRAE American Society of Heating, Refrigerating and Air-Conditioning Engineers

ASHRAE Guideline 3 A publication titled Reducing Emission of Halogenated Refrigerants in Refrigeration and Air Conditioning Equipment and Systems that includes a recommended list of data points to be logged daily for each water chiller.

ASHRAE Standard 15 A publication titled Safety Code for Mechanical Refrigeration that specifies safe design, construction, installation, and operation of refrigerating systems.

ASHRAE/IESNA Standard 90.1 A publication titled Energy Standard for Buildings, Except Low-Rise Residential Buildings that provides minimum requirements for the energy-efficient design of buildings (except low-rise residential buildings), including the HVAC system.

centrifugal compressor A type of compressor that uses centrifugal force, generated by a rotating impeller, to compress the refrigerant vapor.

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