Glossary
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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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| scale inhibitor |
substance added to
water used in condensers, boilers, piping, and cooling towers to prevent or
minimize the formation of insoluble deposits. |
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| scale setting |
1. control set
point at which temperature is to be maintained. 2. indicated temperature
to which a thermostat is set |
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| scan |
1. process of automatically or manually viewing
all points connected to a data‑processing system.
2. to examine
sequentially part by part. |
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| scfm |
standard cubic feet per
minute |
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| scraper ring |
piston ring of special
section, designed to prevent oil from the crankcase entering the cylinder head |
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| scrubber (air washer) |
1. system to reduce noxious substances from a flowing
stream, as in chimneys, or process discharges.
2. device for
reducing the CO2 content of a controlled atmosphere storage room. |
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| seal |
device to prevent
the passage of a gas or liquid into or out of a pipe, container, or along a
shaft. |
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| sealed absorption system |
unit in which all
refrigerant-containing parts are made permanently tight by welding or brazing. |
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| SEER |
seasonal energy
efficiency ratio. |
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| semiconductor |
class of substances having
an electrical conductivity intermediate between those of metals and insulations
at ordinary temperatures |
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