Table E-1: Energy Conversion Units (cont.) 1 kWh. 3412 Btu 1 ft natural gas... 1000 Btu 1 Ccf natural gas.... 100 ft natural gas 1 Mcf natural gas.. 1000 ft natural gas 1 therm natural gas. 100,000 Btu 1 barrel crude oil ...........5,100,000 Btu 1 ton coal........ 25,000,000 Btu 1 gallon gasoline. 125,000 Btu 1 gallon #2 fuel oil........... 140,000 Btu 1 gallon LP gas. 1HP... 95,000 Btu .746 watts 1 cord of wood. 1 MBtu* 1 MMBtu*. 1 therm 1 Quad.... 1 MW** 1 Boiler HP. .30,000,000 Btu 1000 Btu 10 Btu 10 Btu 105 Btu 10 Watts .33,475 Btu/hr The System boilet For a on Natural gas on oil, using Perthem, the boiker is 75% efficient. fuct Source Provides the Lowest operation cost? - facility can operatie natural gas at wors which - NaturaL gas at $6.00 Per McF, Eff=80% Electricity at $,07 51 KWh, Eff = 99% #fuel oll at $1.50/gallok, Eff=7870