E8500 Instruction & Operations Manual
version 1.017
Page 3 of 49
LIST OF ABBREVIATIONS
PARAMETERS
AIR Excess air
CO Carbon monoxide (a toxic gas)
CO
2
Carbon dioxide – NDIR measurement OR calculated from O
2
DFT Draft/Pressure
DUTY Duty cycle is a power setting given in percent
EFF Combustion efficiency (for boilers and furnaces, does not apply to
engines)
HC Hydrocarbons (NDIR) measurement – (HC is same as CxHy)
H
2
S Hydrogen Sulfide (a toxic gas)
N.A. Parameter not available
NO Nitric oxide (a toxic gas)
NO
2
Nitrogen dioxide (a toxic gas)
NO
X
Oxides of nitrogen (a toxic mixture of NO & NO
2
gases)
O
2
REF Oxygen reference basis for correction of toxic gas concentrations
SO
2
Sulfur dioxide (a toxic gas)
Ta Ambient (room) temperature
Tp Preheated Air temperature
Tg Gas temperature
THERMAL EFF Engine thermal efficiency (heat loss method of calculation, not the
same as combustion efficiency)
VEL Stack Gas Velocity
VOC Volatile Organic Compounds
UNITS
CFM Cubic feet per minute, (volumetric stack gas flow-rate)
CMM Cubic meters per minute, (volumetric stack gas flow-rate)
FPS Feet per second (stack gas velocity measurement)
MPS Meters per second (stack gas velocity measurement)
#/H Pounds (of pollutant) per hour (mass emissions)
T/D Tons per day (mass emissions)
PPM Parts (of pollutant) per million (volume basis-dry)
MGM Milligrams (of pollutant) per cubic meter
GBH Grams (of pollutant) per (engine) brake horsepower-hour.
#/B Pounds (of pollutant) per million BTU (of fuel).
"WC Inches of water (draft/pressure measurement)
mmWC Millimeters of water (draft/pressure measurement)
kPa KiloPascals (draft/pressure measurement)
mbar Millibars (draft/pressure measurement)
% Percent by volume, dry-basis
in2 Square inches (cross sectional area of stack)