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Colburn equations

Vertical In-Shell Condensers Condensers are often designed so that condensation occurs on the outside of vertical tubes. Equation (5-88) is valid as long as the condensate film is laminar. When it becomes turbulent. Fig. 5-10 or Colburns equation [Tran.s. Am. Jn.st. Chem. Ertg., 30, 187 (1933-1934) maybe used. [Pg.1042]

Colburn [Tran.s. Am. In.st. Chem. Eng., 35, 211 (1939)] has shown that when the equihbrium line is straight near the origin but curved slightly at its upper end, Nqc . u be computed approximately by assuming that the equihbrium curve is a parabolic arc of slope mo near the origin and passing through the point X, K X at the upper end. The Colburn equation for this case is... [Pg.1360]

Figure 14-26 also accepts the validity of the Colburn equation [Ind. Eng. Chem., 28, 526 (4936)] for the effect of entrainment on efficiency ... [Pg.1374]

The Colburn equation is based on complete mixing on the plate. For incomplete mixing, e.g., liquid approaching plug flow on the plate, Rahman and Lockett [I. Chem. E. Symp. Sei No. 61, 111 (1981)] and Lockett et al. [Chem. Eng. ScL, 38, 661 (1983)] have provided corrections for Eq. 14-44. Figure 14-26 and Eq. 14-94 may be used to evaluate the effects of entrainment on efficiency. [Pg.1375]

Example 8-24 Using the Colburn Equation Calculate the Minimum Reflux Ratio... [Pg.76]

Underwood Algebraic Method, 71 Example 8-23 Minimum Reflux Ratio Using Underwood Equation, 73 Minimum Reflux Colburn Method, 74 Example 8-24 Using the Colburn Equation to Calculate Minimum Reflux Ratio,... [Pg.497]

This equation may also be written in the form of the Colburn equation (9.62). [Pg.418]

Colburn equation, flat plates 434 Colorimetric methcxls for humidity determination 759 Comings, E. W, 745, 786 Compact heat exchangers 550 Compressed air for pumping 358 Compressibility factor 34, 35,161 Compressible fluids 30, 48... [Pg.871]

An equally important objective of these turbulent mass-transfer measurements was the establishment of the exact dependence of k on the Reynolds number. The well-known empirical Chilton-Colburn equation for turbulent transfer (C3) predicts that... [Pg.270]

Hubbard and Lightfoot (HI la) earlier reported a Sc,/3 dependence on the basis of measurements in which the Schmidt number was varied over a very large range. The data did not exclude a lower Reynolds number exponent than 0.88, and reaffirmed the value of the classical Chilton-Colburn equation for practical purposes. Recent measurements on smooth transfer surfaces in turbulent channel flow by Dawson and Trass (D8) also firmly suggest a Sc13 dependence and no explicit dependence of k+ on the friction coefficient, with Sh thus depending on Re0,875. The extensive data of Landau... [Pg.270]

Chilton and Colburn Equation—A correlation. of existing data on flow through packings under all types of conditions was undertaken by Chilton and Colburn (1931). [Pg.275]

Fora countercurrent extraction column with no discrete stages (or for processes operated within a diffusion-controlled regime far from equilibrium), performance is well modeled by the Colburn equation, where... [Pg.1736]

Price, B. C. and Bell, K. J., Design of Binary Vapor Condensers Using the Colburn Equations, AIChE Symp. Ser. 70, 163-171, (1974). [Pg.565]

The tray efficiency is lowered by liquid entrainment because higher-boiling liquid is carried to a tray containing lower-boiling liquid, thereby countering the fractionation process. The lowering of the Murphree tray efficiency is expressed by the Colburn equation (Colburn, 1936) ... [Pg.516]


See other pages where Colburn equations is mentioned: [Pg.255]    [Pg.270]    [Pg.20]    [Pg.491]    [Pg.492]    [Pg.1735]    [Pg.1735]    [Pg.1735]    [Pg.1735]    [Pg.285]    [Pg.49]    [Pg.49]    [Pg.49]    [Pg.49]    [Pg.374]   
See also in sourсe #XX -- [ Pg.473 ]

See also in sourсe #XX -- [ Pg.114 , Pg.403 , Pg.406 ]

See also in sourсe #XX -- [ Pg.285 ]

See also in sourсe #XX -- [ Pg.344 , Pg.370 ]




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Colburn

Examples Colburn equation, minimum reflux ratio

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