Investigation of the Temperature Dependence of the Coefficient of Diffusion of Gases PDF Download
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Author: LIBRARY OF CONGRESS WASHINGTON DC AEROSPACE TECHNOLOGY DIV. Publisher: ISBN: Category : Languages : en Pages : 16
Book Description
Two methods of determining coefficient of dif fusion of gases (c. d. g.) (weight and freezing) are described. With the first, c. d. are determined for the system of gases CO2-H2, CO2 N2, N2-H2, in the range of temperatures 20 800 C.A semi-empirical formula of dependence of c. d. g. on temperature is offered. A con nection between the coefficients of self diffusion and interdiffusion of gases is established. A comparison is made of the formula offered and Chepmen-Enskiy's formula with the experimental data which shows a satisfactory concurrence of both formulas. (Author).
Author: LIBRARY OF CONGRESS WASHINGTON DC AEROSPACE TECHNOLOGY DIV. Publisher: ISBN: Category : Languages : en Pages : 16
Book Description
Two methods of determining coefficient of dif fusion of gases (c. d. g.) (weight and freezing) are described. With the first, c. d. are determined for the system of gases CO2-H2, CO2 N2, N2-H2, in the range of temperatures 20 800 C.A semi-empirical formula of dependence of c. d. g. on temperature is offered. A con nection between the coefficients of self diffusion and interdiffusion of gases is established. A comparison is made of the formula offered and Chepmen-Enskiy's formula with the experimental data which shows a satisfactory concurrence of both formulas. (Author).
Author: Jochen Winkelmann Publisher: Springer ISBN: 9783662540886 Category : Science Languages : en Pages : 1191
Book Description
This volume contains data on diffusion in liquid mixtures. Diffusion processes are widespread phenomena in nature, of which mass diffusion is the most important one, in particular in liquids. The corresponding diffusion coefficients strongly depend on concentration, temperature, pressure and density. Contrary to the measurement of viscosity or heat transfer, where a few well developed experimental methods exist, we find a wide spectrum of different methods for measuring mass diffusion coefficients ranging from NMR spectroscopy, scattering, holography, interferometry, chromatography, diffusion through diaphragm and in capillary systems, and electroanalytical methods.After an introduction about the selection and normalization of data, in its first part this volume presents the most important measurement methods, followed by a second part on diffusion coefficient data depending on the various parameters.
Author: Helmut Mehrer Publisher: Springer Science & Business Media ISBN: 354071488X Category : Technology & Engineering Languages : en Pages : 645
Book Description
This book describes the central aspects of diffusion in solids, and goes on to provide easy access to important information about diffusion in metals, alloys, semiconductors, ion-conducting materials, glasses and nanomaterials. Coverage includes diffusion-controlled phenomena including ionic conduction, grain-boundary and dislocation pipe diffusion. This book will benefit graduate students in such disciplines as solid-state physics, physical metallurgy, materials science, and geophysics, as well as scientists in academic and industrial research laboratories.
Author: Maher I. Boulos Publisher: Springer Nature ISBN: 3030849368 Category : Science Languages : en Pages : 1973
Book Description
This authoritative reference presents a comprehensive review of the evolution of plasma science and technology fundamentals over the past five decades. One of this field’s principal challenges has been its multidisciplinary nature requiring coverage of fundamental plasma physics in plasma generation, transport phenomena under high-temperature conditions, involving momentum, heat and mass transfer, and high-temperature reaction kinetics, as well as fundamentals of material science under extreme conditions. The book is structured in five distinct parts, which are presented in a reader-friendly format allowing for detailed coverage of the science base and engineering aspects of the technology including plasma generation, mathematical modeling, diagnostics, and industrial applications of thermal plasma technology. This book is an essential resource for practicing engineers, research scientists, and graduate students working in the field.
Author: Carl Barus Publisher: Forgotten Books ISBN: 9780364024713 Category : Languages : en Pages : 102
Book Description
Excerpt from The Diffusion of Gases Through Liquids and Allied Experiments The experiments in Chapter I, made during a period of eleven years, with an ordinary glass balloon - shaped Cartesian diver with a small aperture, culminated in a plausible value of the diffusion coefficient (i. E., grams of gas or standard volume of gas transpiring per second across an orthogonal square centimeter, in case of a unit pressure gradient) of the imprisoned air through water, together with suggestive relations of the mean viscosity of the imaginary medium within the molecular pores of the liquid through which a single molecule of the gas virtually transpires. The investigation was therefore taken up on a more extended scale, for different pairs of gases. In Chapter II the diver is modified in form and the endeavor is made to obtain equal areas in the section of the cylindrical swimmer and the annular space without, in order to conform more closely to the equation of diffusion. The theory of the phenomenon and the errors involved are discussed. It appears that. Even for mixed gases, the volumes diffusing (if not the masses) are fully determinable. The accuracy essentially depends on the measure ment of absolute temperature and of barometric pressure and should there fore be of an order below I 27 30 per C. Or per centimeter of mercury. As the masses of gas contained are as a rule much less than 10 - 2 gram, even in case of air, the weight less than gram is determinable, showing the remarkable sensitiveness of the method. Moreover, in the region of constant temperature, the limit of sensitiveness is immensely greater. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Author: John Crank Publisher: Oxford University Press ISBN: 9780198534112 Category : Mathematics Languages : en Pages : 428
Book Description
Though it incorporates much new material, this new edition preserves the general character of the book in providing a collection of solutions of the equations of diffusion and describing how these solutions may be obtained.
Author: LIBRARY OF CONGRESS WASHINGTON DC AEROSPACE TECHNOLOGY DIV.
Author: LIBRARY OF CONGRESS WASHINGTON DC AEROSPACE TECHNOLOGY DIV.
Author: Charles Edward Baker
Author: Jochen Winkelmann
Author: Helmut Mehrer
Author: 
Author: Maher I. Boulos
Author: Roger A. Strehlow
Author: 
Author: Carl Barus
Author: John Crank