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Download e-book for kindle: Mass Transfer: Principles and Applications by Diran Basmadjian

By Diran Basmadjian

ISBN-10: 0849322391

ISBN-13: 9780849322396

In recent times, the topic of mass move has been taken care of as a minor participant within the better box of delivery phenomena and brought a again seat to its extra mature "brother," warmth move. but mass move is adequately mature as a self-discipline and sufficiently particular from different delivery techniques to benefit a separate therapy, rather one who doesn't crush readers with an abundance of high-level arithmetic. Mass move: rules and purposes takes an built-in strategy that makes use of a wealth of real-world examples, organizes the fabric in accordance with mode of operation, and highlights the significance of modeling. the writer starts off via introducing diffusion charges, Fick's legislation, movie conception, and mass move coefficients, then develops those techniques in complementary phases. The remedy of part equilibria covers issues typically no longer addressed in thermodynamics classes, and those techniques are then used to research compartmental versions and staged approaches in addition to non-stop touch operations. the ultimate bankruptcy bargains a concise survey of simultaneous mass and warmth transfer.Throughout the e-book, discussions transition easily among thought and perform and obviously mirror the author's a long time of engineering adventure and the breadth of mass move purposes. Mass move: rules and functions is a different and obtainable therapy of this really advanced subject that would fill an important hole as either a textbook reference.

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Extra resources for Mass Transfer: Principles and Applications

Sample text

2. More about Driving Forces and Transport Coefficients a. Would you expect the effective film thickness to increase or diminish with an increase in velocity of the flowing fluid? b. Liquid-phase diffusivities are some four orders of magnitude smaller than the corresponding gas-phase diffusivities. Would you therefore expect all gas–liquid operations to be liquid-film controlled? c. Gases with high solubility have a low slope m of the equilibrium curve pA* = f(CA). Does this imply that the liquid phase driving force is small?

2 Rate Laws Based on Linear Driving Forces Process 1. Electrical current flow (Ohm’s law) 2. Convective mass transfer 3. Convective heat transfer 4. 1) The minus sign is introduced to convert DT/Dx, which is negative quantity, to a positive value of heat flow q. In the limit Dx Æ 0, the difference quotient converts to the derivative dT/dx. 1b, are known as Fourier’s law of heat conduction. It can be expressed in yet another alternative form, which is obtained by multiplying and dividing the right side by the product of density r (kg/m3) and specific heat Cp (J/kg K).

6a. 4. 20 Mass Transfer: Principles and Applications a. XB2 XA2 XA XB NA NB A+B A+B XB1 XA1 z b. 6 Two modes of transport: (a) equimolar counterdiffusion; (b) diffusion through a stagnant film. 18c) Because of the logarithmic terms, the profiles for both component A and component B are nonlinear. 6b. 18c to the product of a linear driving force in the diffusing species A, pA1 – pA2, and a constant mass transfer coefficient kG. 3. 5: Estimation of Mass Transfer Coefficients and Film Thickness. Transport in Blood Vessels It is of some interest to the practicing engineer to have a sense of the order of magnitude both of the mass transfer coefficient and of its associated film thickness.

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Mass Transfer: Principles and Applications by Diran Basmadjian


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