|
The K factor or characterization factor is a systematic way of classifying a crude oil according to is paraffinic, naphthenic, intermediate or aromatic nature. 12.5 or higher indicate a crude oil of predominantly paraffinic constituents, while 10 or lower indicate a crude of more aromatic nature. The K factor is also referred to as the UOP K factor or just UOPK. In the oil and gas engineering industry as well as many other industries, the K-factor formula is used to calculate head loss across fittings or a set of fittings in a piping system. The formula may be expressed as:〔(Pressure drop calculations ) Scroll down to page 3 (of the 5 pdf pages) entitled "Pressure drop in fittings ...".〕〔(Pipe Fittings Loss Calculations with K Factors )〕〔 (See Equation (2) on page 188)〕 :∆h = K v 2/ 2g CAUTION: The "K-values" for characterization liquids to be separated by distillation are supposed to facilitate vapor-liquid equilibrium calculations. The "K" values in this equation are for pressure drop calculations in pipe and associated fittings. Please see〔Vapor-liquid K values〕 for K-Factors used in crude oil refining. where, when using the customary U.S. units: * ∆h = head loss in feet of fluid * K = the frictional coefficient * v = the fluid velocity in ft/s * g = acceleration due to gravity = 32.17 ft/s2 where, when using the SI metric units: * ∆h = head loss in metres of fluid * K = the frictional coefficient * v = the fluid velocity in m/s * g = acceleration due to gravity = 9.81 m/s2 ==See also== * Crude oil assay 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「K factor (crude oil refining)」の詳細全文を読む スポンサード リンク
|