British thermal units per pound

To convert calories per gram-kelvin to British thermal units per pound-degree Ranldne, multiply by 1.0 to convert calories per gram-mole-kelvin to British thermal units per pound-mole-degree Ranldne, multiply by 1.0. 

To convert kilojoules per Idlogram-kelvin to British thermal units per pound-degree Ranldne, multiply by 0.2388. 

F = °C -h 32 to convert kilocalories per gram-mole to British thermal units per pound-mole, multiply by 1.799 X 10". ... 

NOTE Difficulties of accurately characterizing many of the specimens mean that many of the values presented here must he regarded as being of order of magnitude only For some materials, actual measurement may he the only way to obtain data of the required accuracy To convert kilograms per cubic meter to pounds per cubic foot, multiply hy 0.062428 to convert kilojoules per Idlogram-kelvin to British thermal units per pound-degree Fahrenheit, multiply hy 0.23885. 

FIG. 12-1 Psychro metric chart—low temperatures. Barometric pressure, 29.92 inHg. To convert British thermal units per pound to joules per Idlogram, multiply by 2.326 to convert British thermal units per pound dry air-degree Fahrenheit to joules per Idlogram-kelvin, multiply by 4186.8 and to convert cubic feet per pound to cubic meters per Idlogram, multiply by 0.0624. 

To convert British thermal units per pound to joules per kilogram, multiply hy 2326 to convert pounds per cubic foot to kilograms per cubic meter, multiply by 16.02. 

To convert Idlojoiiles per kilogram to British thermal units per pound, multiply hy 4.299 X 10"h... 

The energy available in the steam is expressed in British thermal units per pound, or enthalpy. The velocity of the steam flow through the nozde is calculated from... 

FIG. 29-23 Mollier diagram showing ASME-IEEE steam-turhine standards. To convert British thermal units per pound to kilojoules per kilogram, multiply hy 2.328 to convert British thermal units per pound-degrees Ranldne to joules per gram-Kelvin, multiply hy 4.19 and to convert poiinds-force per square inch to Idlopascals, multiply hy 6.89. 

British thermal unit per pound-mass 2300 joules per kilogram... 

Step 4. Now measure the enthalpy difference in British thermal units per pound of steam between points A and B on the vertical (y axis) scale. 

This classification does not include a few coals, principally nonbanded varieties, that have unusual physical and chemical properties and that come within the limits of the fixed-carbon or calorific value of the high-volatile bituminous and subbituminous ranks. All of these coals either contain less than 48% dry, mineral-matter-ffee fixed carbon or have more than 15,500 moist, mineral-matter-free British thermal units per pound. 

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). 

High-volatile B bituminous coal rank of coal such that on a moist, mineral-matter-free basis, the gross calorific value of the coal in British thermal units per pound is equal to greater than 13,000 but less than 14,000, and the coal commonly agglomerates. 

Next, determine the heat-transfer coefficient, using the formula h = 0.11 cGn 6/ L)nA, where h is heat-transfer coefficient in British thermal units per hour per square foot per degree Fahrenheit, c is specific heat in British thermal units per pound per degree Fahrenheit (0.24 for air), G is mass velocity in pounds per hour per square foot, and I) is diameter in feet. Thus, h = 0.11 (0.24)(5940)°6/(3.5/12)°4 = 7.94 Btu/(h)(ft2)(°F) [45.05 W/(m2)(K)]. 

---