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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| sabin |
dimensionless unit
of acoustical absorption, equal to the equivalent sound absorption of one
square foot of a surface of unit absorptivity (i.e., 1 ft2 of surface that absorbs all incident sound
energy). |
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| safe pressure |
maximum pressure a system
can be subjected to without component failure |
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| safety |
condition of being safe;
freedom from danger or hazard |
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| safety device |
ancillary device
fitted to an apparatus or machine in order to prevent accident or damage in the
event of abnormal functioning of the system. |
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| safety interlock | 1. device to indicate the physical state of a
required operational condition and to furnish proof to the primary safety
control circuit.
2. arrangement to make a system inoperable when
an improper or unsafe condition exists. |
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| salinometer | hydrometer calibrated in
salt concentration |
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| SAMA | Scientific Apparatus
Makers Association |
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| saponification |
process of
converting chemicals into soap, which involves the alkaline hydrolysis of an
oil or fat or the neutralization of a fatty acid. |
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| saturation |
condition for coexistence
in stable equilibrium of a vapor and liquid, or a vapor and solid phase of the
same substance. As an example, steam over the water from which it is being
generated. See vapor pressure |
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| saturation deficiency |
dimensionless
difference between the humidity ratio of an air sample and the saturation
humidity ratio of air at the same temperature and pressure. |
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