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Ratings found in centrifugal fan performance tables and curves are based on standard cubic feet per minute (SCFM). Fan manufacturers define standard air as clean, dry air with a density of 0.075 pounds mass per cubic foot, with the atmospheric pressure at sea level of 29.92 inches of mercury and a temperature of 70°F.
liquid measure: US barrel: USbbl US bbl 31½ US gal used for liquids except for oil and beer (see the full list) 1.0 US bbl (120 L; 32 US gal; 26 imp gal) U.S.bbl U.S. bbl barrel: oilbbl bbl 42 US gal 1.0 bbl (0.16 m 3) US beer barrel: USbeerbbl (usbeerbbl) US bbl 1.0 US bbl (120 L; 31 US gal; 26 imp gal) U.S.beerbbl (usbeerbbl) U.S. bbl
The density of air or atmospheric density, denoted ρ, [1] is the mass per unit volume of Earth's atmosphere. Air density, like air pressure, decreases with increasing altitude. It also changes with variations in atmospheric pressure, temperature and humidity. At 101.325 kPa (abs) and 20 °C (68 °F), air has a density of approximately 1.204 kg ...
0.1 × ( 12 ÷ 8 ) = 0.15 grain per dscf when corrected to a gas having a specified reference CO 2 content of 12 volume %. Notes: Although ppmv and grains per dscf have been used in the above examples, concentrations such as ppbv (i.e., parts per billion by volume), volume percent, grams per dscm and many others may also be used.
The specific weight, also known as the unit weight (symbol γ, the Greek letter gamma), is a volume-specific quantity defined as the weight W divided by the volume V of a material: = / Equivalently, it may also be formulated as the product of density, ρ, and gravity acceleration, g: = Its unit of measurement in the International System of Units (SI) is newton per cubic metre (N/m 3), with ...
For a substance X with a specific volume of 0.657 cm 3 /g and a substance Y with a specific volume 0.374 cm 3 /g, the density of each substance can be found by taking the inverse of the specific volume; therefore, substance X has a density of 1.522 g/cm 3 and substance Y has a density of 2.673 g/cm 3. With this information, the specific ...
pound per cubic yard (1 g/cm 3 ≈ 1685.5549 lb/cu yd) pound per US liquid gallon (1 g/cm 3 ≈ 8.34540445 lb/US gal) pound per US bushel (1 g/cm 3 ≈ 77.6888513 lb/bu) slug per cubic foot; Imperial units differing from the above (as the Imperial gallon and bushel differ from the US units) in practice are rarely used, though found in older ...
Density system unit unit-code symbol or abbrev. notes sample default conversion combination output units Metric: kilogram per cubic metre: kg/m3 kg/m 3: 1.0 kg/m 3 (1.7 lb/cu yd)