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Glossary
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A
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B
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C
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D
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E
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F
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G
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H
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J
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K
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L
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M
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N
O
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P
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Q
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R
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T
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U
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Density
Mass
per unit volume.
I-P units: lb/ft3
Dew point
Refers
to the temperature at which condensation occurs as the dry-bulb temperature
of moist air is lowered.
Diffuse
The
dispersal of incident solar radiation as a result of a surface's opalescent
(transmission) or matte (reflection) quality.
Direct gain (DG)
The
direct
gain
system is a
passive solar heating strategy consisting of a south-facing glazing that
admits incident solar radiation directly into a building's interior where it
is absorbed by thermally-massive materials.
Dry-bulb (DB) temperature
The air
temperature measured using a conventional thermometer.
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