Heating Helper

CHAPTER 10 - MISCELLANEOUSENERGY TERMS - CONVERSIONS - HEAT VALUESA. PREFIXES - Prefixes indicateorders of magnitude in steps. Prefixesprovide a convenient way to express large and small numbers and to.. .eliminate nonsignificant digits and leading zeros in decimal fractions. .The following are the more commonly used prefixes:. .English SystemSymbolRepresentsC 100M 1,000MM 1,000,000Metric SystemK 1,000M* 1,000,000*Caution: make certain of the system.B. NATURAL GAS ENERGY MEASUREMENTS IN BTU1,000 = 1 Cubic Foot100,000 = 1 therm or 1 CCF or 100 MBTU1,000,000 = 1 MMBTU or 1,000 CF or 1 MCF1,000,000,000 = 1 billion BTU or 1 MMCF1,000,000,000,000 = 1 trillion BTU or 1 BCF1,000,000,000,000,000 = 1 quadrillion BTU or 1 TCFC. energy measurements of other fuels in btuPropane 2,550 btu = 1 CF21,650 btu = 1 Lb.91,800 btu = 1 Gal.Butane 3,200 btu = 1 CF21,500 btu = 1 Lb.102,400 btu = 1 Gal.Oil 5,825,000 btus = 1 barrel crude6,200,000 btus = 1 barrel #5 (Residual)6,400,000 btus = 1 barrel #6 (heating)134,000 btus = 1 Gal. #1 oil (kerosene)139,000 btus = 1 Gal. #2 oil146,800 btus = 1 Gal. #4 oil150,000 btus = 1 Gal. #6 oil(1 U.S. Barrel = 42 U.S. Gallons).81