BTU value

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• Btu per cubic foot —   The total heating value, expressed in Btu, produced by the combustion, at constant pressure, of the amount of the gas that would occupy a volume of 1 cubic foot at a temperature of 60 degrees F if saturated with water vapor and under a pressure …   Energy terms

• Wood conversion to Btu —   Converting cords of wood into a Btu equivalent is an imprecise procedure. The number of cords each household reports having burned is in exact, even with the more precise drawings provided, because the estimate requires the respondent to add up …   Energy terms

• R-value (insulation) — The R value or R value is a measure of thermal resistance (K·m²/W) [Oak Ridge National Laboratory, [http://www.ornl.gov/sci/roofs+walls/insulation/ins 02.html Which Kind Of Insulation Is Best?] , retrieved 2008 07 13.] used in the building and… …   Wikipedia

• net calorific value — (net heat of combustion at constant pressure), n the heat produced by combustion of unit quantity of a solid or liquid fuel when burned, at a constant pressure of 1 atm (0.1 MPa), under conditions such that all the water in the products remains… …   Coke&Coal Terminology

• heating value — Amount of heat which may be obtained by burning a fuel. The heating value is usually expressed in Btu per lb., Btu per gal., or kJ/kg …   Dictionary of automotive terms

• R-Value —   A measure of the capacity of a material to resist heat transfer. The R Value is the reciprocal of the conductivity of a material (U Value). The larger the R Value of a material, the greater its insulating properties.   ***   A measure of a… …   Energy terms

• Low Btu Gas —   A fuel gas with a heating value between 90 and 200 Btu per cubic foot …   Energy terms

• Low Btu gas —   A fuel gas with a heating value between 90 and 200 Btu per cubic foot.   U.S. Dept. of Energy, Energy Information Administration s Energy Glossary …   Energy terms

• Medium Btu Gas —   Fuel gas with a heating value of between 200 and 300 Btu per cubic foot …   Energy terms

• Net (Lower) Heating Value — (NHV)   The potential energy available in a fuel as received, taking into account the energy loss in evaporating and superheating the water in the fuel. Equal to the higher heating value minus 1050W where W is the weight of the water formed from… …   Energy terms

• calorific value — n the heat of combustion of a unit quantity of a substance. DISCUSSION It is expressed inASTM test methods in British thermal units per pound (Btu/lb). Calorific value can also be expressed in calories per gram (cal/g) or in the International… …   Coke&Coal Terminology