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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| S |
| Pages: «1 2 3 4 5 6 7 8 9 10 11 » |
| specific volume (SV) | volume of a unit mass of a
material. Usually expressed in cubic feet per pound (cubic metres per
kilogram). The reciprocal of density |
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| specification | precise statment of a set
of requirements to be satisfied by a material, product, system, or service that
indicates the procedures for determining whether each of the requirements is
satisfied. Note: It is desirable to
express the requirements numerically in terms of appropriate units, together
with their limits |
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| speech interference level (SIL) | average of the sound
pressure level measured in the three octave bands centered at 500, 1000, and
2000 hertz. |
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| spill (water cooler) |
unconsumed portion
of the projected stream of cooled water from the nozzle of a bubbler-type
pressure water cooler. |
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| spinning reserve (electric) |
reserve generating
capacity connected to the utility bus and ready to take load. |
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| spool piece |
piece of pipe with flanges
on both ends that is inserted into a pipeline in place of a valve or instrument |
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| spray deck |
overhead bunker where air
is cooled and circulated by brine sprays |
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| spray pond |
system for
lowering the temperature of water by conductive and evaporative cooling of the
water in contact with outside air. Water to be cooled is sprayed by nozzles
into the air above a pond of water and allowed to fall by gravity into it. |
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| spread |
divergence of an airstream
after it leaves an outlet |
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| spring range |
1. range through which the signal applied must
change to produce total movement of the controlled device from one position to
another. 2. difference between the
start and finish pressure on a pneumatic operator |
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