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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
combustible gas (or vapor) detector

instrument for determining concentration of combustible gas or vapor 

 
combustion

chemical process of oxidation that occurs at a rate fast enough to produce heat and usually light either as a glow or flame.

 
combustion (gas) tests

sampling of combustion products to deter­mine the percentage of con­stituents and their tempera­ture.

 
combustion chamberenclosure, with or without lines or baffles, into which fuel or gaseous deriv­atives of fuel are discharged so that combustion can occur
 
combustion control

device or series of devices that control the flow of fuel and combustion air in the desired ratio to provide efficient combustion.

 

 
combustion detector

part of primary safety con­trol which is respon­sive directly to flame proper­ties 

 
combustion products

effluents from the combustion of a fuel including the inerts, but excluding excess air 

 
combustion volumespace provided for the burning of fuel
 
comfort chart

chart showing operative tempera­tures with dry‑bulb temperatures, relative humidit­ies, and air motion by which the effects of the various conditions on human comfort may be compared.

 

 
comfort index

index combining the properties of an environment for evaluating the sensation of comfort of occupants; equal to 15 plus 0.4 times the sum of the dry-bulb and wet-bulb temperatures in degrees Fahrenheit. See also thermal comfort 

 





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