AFUE Annual Fuel Utilization Efficiency
American Society of Heating, Refrigeration
ASHRAE
and Air Conditioning Engineers
ASTM American Society for Testing of Materials
A device used with a discharge lamp to
provide the necessary circuit conditions
Ballast
(voltage, current, and waveform) to start and
operate the lamp.
Air passing through damaged or poorly
Boiler Air
maintained door seals. Will affect SSE reading
Leakage("Tramp Air")
if not recognized and properly interpreted.
The ratio of Btu content of fuel vs. Btu's
Burn Efficiency
realized through combustion.
CCT Correlated Color Temperature
CO Carbon Monoxide
CRI Color Rendering Index
DHW Domestic Hot Water
Efficiency of the distribution system. It is the
ratio of heat in the air, water or steam that
Distribution Efficiency enters the distribution piping/ducting, to the
heat delivered to the space via terminal units
(radiators, fin tube, etc).
EEMs Energy Efficiency Measures
, The efficiency of the lamp, expressed in
Lumens per watt (LPW). It is the ratio of the
Efficacy
total light (lumen) output over the total
energy (watt) input.
EPA Environmental Protection Agency
ERV Energy Recovery Ventilator
Units of light density striking a surface. One
Foot Candles footcandle is defined as one lumen
distributed uniformly over one square foot.
GAMA ...
HID Lamp High Intensity Discharge Lamp
Illuminating Engineering Society of North
IESNA
America
Lumens measured before depreciation
Initial Lumens
occurs.
A generic term for a source created to
Lamp
produce optical radiation.
LED Light Emitting Diodes
Technically "luminous flux". The amount of
Lumens light that a bulb produces. It is a unit of
output.
The ratio of luminous flux emitted by a
Luminaire Efficiency luminair over that emitted by the lamp (or
lamps) contained in the fixture.