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Glossary

 

The terms and definitions included in this glossary were taken from "ASHRAE Terminology of Heating, Ventilation, Air Conditioning & Refrigeration".
To access the complete glossary please visit ASHRAE's Bookstore.


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Term Definition
snow gun (snow maker)

 

apparatus that can produce and shoot artificial snow over a long distance; used to make or improve a ski area 

 
snubber pulsation suppressor

 

restrictor placed in the liquid or vapor line to suppress pulsating or fluctuating pressures.

 
soda fountain

 

service counter containing a water cooler, a water carbonator, a refrigerated compartment for syrups and diced fruit, and a low-temperature compartment for ice cream.

 
soft soldering

 

hot joining operation in which the melting temperature of the filler metal is lower than 800°F (450°C).

 
softening point

 

temperature at which a solid loses rigidity or consistency in a standardized test procedure.

 
solar colector instantaneous efficiency

 

ratio of the energy removed by the transfer fluid per unit of collector area to the total solar radiation incident on the collector per unit area (aperture or gross) during a test period for which the condition of the test corresponds to the steady state or quasi-steady state.

 

 
solar collector

 

device designed to absorb incident solar radiation and to transfer the energy to a fluid passing through it.

 

 
solar collector absorber

 

part of the solar collector that receives the incident radiation energy and transforms it into thermal energy. It may possess a surface through which energy is transmitted to the transfer fluid; however, the transfer fluid itself can be the absorber
 
solar collector aperture area

 

maximum projected area of a solar collector through which the unconcentrated solar radiant energy is admitted 

 
solar collector cover

 

material covering the aperture to provide thermal and environmental protection
 





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