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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| design conditions |
specified environmental conditions, such as
temperature and humidity, required to be produced and maintained by a system |
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| design professional | individual responsible for the design and
preparation of architectural or engineering contract documents |
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| design professions (environmental) |
professions collectively responsible for the
design of human physical environment, including architecture, engineering,
landscape architecture, urban planning, and similar environment-related
professions. |
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| desorption | liberation of a gas held in a substance by
sorption |
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| deterioration (spoilage) | in food, any damage due to diverse causes
resulting in quality decrease. |
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| deviation | difference between the set point and the value
of the controlled variable at any instant. |
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| device | piece of equipment or a mechanism designed to
serve a special purpose or to perform a special function; refer to specific
device of interest |
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| dew | 1.
deposit of water droplets on cold surfaces formed by the condensation of water
vapor. 2. hydrometeor produced on objects at or near
the ground |
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| dew-point depression | difference between dry-bulb temperature and
dew-point temperature. See wet-bulb temperature |
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| dew-point rise | increase in moisture content (specific humidity)
of air expressed in terms of a rise in dew-point temperature |
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