§ 97.103 Measurements, abbreviations, and acronyms.

Measurements, abbreviations, and acronyms used in this subpart and subparts BB through II are defined as follows:

Btu—British thermal unit

CO₂—carbon dioxide

H₂O—water

Hg—mercury

hr—hour

kW—kilowatt electrical

kWh—kilowatt hour

lb—pound

mmBtu—million Btu

MWe—megawatt electrical

MWh—megawatt hour

NO_X—nitrogen oxides

O₂—oxygen

ppm—parts per million

scfh—standard cubic feet per hour

SO₂—sulfur dioxide

yr—year