British thermal units per pound BTU/lb

Calorific value heat of combustion of a unit quantity of a substance usually expressed in British thermal units per pound (Btu/lb) can also be calories per gram (cal/g) or joules per gram (J/g), when required (ASTM D-2015 ASTM D-3286). 

British thermal unit,. per pound (Btu, /lb).joule per kilogram (J/kg).2,... 

The ASA-ASTM system established four classes or ranks of coal anthracite, bituminous, sub-bituminous, and lignite, based on fixed-carbon content and heating value measured in British thermal units per pound (BTU lb ). Anthracite, a hard black coal that burns with little flame and smoke, has the highest fixed-carbon content, 86-98% and a heating value of (9.2-10.7) 10 J kg (Speight 2006, see Tables 2.51 and 2.55). This classification was already used 100 years ago (Robertson 1919) and Seyler (1900) used the C/H ratio for the coal classification, from lignite ( 10) to anthracite (>26). Based on raw coal, the chemical composition varies widely (in %) ... 

British thermal units per pound (Btu/lb) x 0.5555 = kilogram-calories per kilogram (kg-cal/kg)... 

British thermal units per cubic foot (Btu/ft ) x 8.8987 = kilogram-calories/cubic meter (kg-cal/m ) kilojoule (kJ) x 0.9478 = British thermal units (Btu) kilojoule (kJ) x 0.00027778 = kilowatt-hours (kW-hr) kilojoule (kJ) x 0.2778 = watt-hours (W-hr) joule (J) X 0.7376 = foot-pounds (ft-lb) joule (J) X 1.0000 = watt-seconds (W-sec) joule (J) X 0.2399 = calories (cal) megajoule (MJ) x 0.3725 = horsepower-hour (hp-hr) kilogram-calories (kg-cal) x 3.9685 = British thermal units (Btu) kilogram-calories per kilogram (kg-cal/kg) x 1.8000 = British thermal units per pound (Btu/lb)... 

The computed value for the calorific value of coal is usually expressed in British thermal units per pound, kilocalories per kilogram, or in kilojoules per kilogram (1.8 Btu/lb = 1.0 kcal/kg = 4.187 kJ/kg). 

Anthracite, or hard coal, the oldest variety of coal, was laid down as long as 250 million years ago and may contain over 80% carbon. Bituminous coal, a younger variety of coal, has between 45% and 65% carbon. Fuel values of coals are rated in Btu s (British thermal units) per pound, which are essentially heats of combustion per pound of coal. A typical value is 13,200 Btu/lb. A Btu equals 1054 J, so 1 Btu/lb equals 2.32 J/g. Therefore, the combustion of coal in oxygen yields about 30.6 kJ/g. You can compare this value with the heat of combustion of pure carbon (graphite). 

British thermal units/hour (Btu/hr) x 0.00039 = horsepower (hp) foot-pounds per second (ft-lb/sec) x 0.0771 = British thermal units per minute (Btu/min)... 

Contaminated feed materials must have a minimum solids content of 60% to facilitate materials handling operations. The vendor advises that the unit has a waste heat value upper limit of approximately 300 British thermal unit (Btu) per pound (Btu/lb). Waste blending or homogenization is recommended as a means to evenly distribute both moisture and Btu content. 

AVT Barg BD BDHR BF BOF BOOM BOP BS W BSI BTA Btu/lb BW BWR BX CA CANDUR CDI CFH CFR CHA CHF CHZ Cl CIP CMC CMC CMC COC All-Volatile treatment bar (pressure), gravity blowdown blowdown and heat recovery system blast furnace basic oxygen furnace boiler build, own, operate, maintain balance of plant basic sediment and water British Standards Institution benzotriazole British thermal unit(s) per pound boiler water boiling water reactor base-exchange water softener cellulose acetate Canadian deuterium reactor continuous deionization critical heat flux Code of Federal Regulations cyclohexylamine critical heat-flux carbohydrazide cast iron boiler clean-in-place carboxymethylcellulose (sodium) carboxy-methylcellulose critical miscelle concentration cycle of concentration... 

Ibf) force to accelerate l(lbm) by 32.1740 (ft) s" atm = standard atmospheric pressure = 101 325 Pa (psia) E pounds force per square inch absolute pressure torr = pressure exerted by 1 mm mercury at 273.15 K (0°C) and standard gravity (cal) = thermochemical calorie (Btu) s international steam table British thermal unit (lb mole) s mass in pounds mass with numerical value equal to the molar mass (R) - absolute temperature in Rankines... 

Notes at, atmosphere (technical) atm, atmosphere (physical) Btu (Btu or BTU), British thermal unit cal, calorie cc, cubic centimeter chu, centigrades heat unit 1 circular mil, area of circle with diameter of 1 mil dyn, dyne eV, electronvolt /, force //, fluid ft, foot or feet h, hour Hg, mercury in, inch J, joule h, hour hp, horsepower L (L or 1), hter (litre) lb (from Latin libra), pound orlbni (Ibm), pound of mass Ibf (Ibf), pound of force m, meter (metre) mi, mile mil, unit of length equal to one thousandth of an inch min, minute pm, micrometer N, newton nmi, nautical mile oz, ounce P, poise Pa, pascal pcu, pound centigrade unit pdl, poundal psi, pounds per square inch psia, psi absolute psig, psi gauge s, second St, stoke UK, United Kingdom (ie, British unit) US, United States (ie, US unit) yd, yard W, watt. 

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