Download or read book Fundamentals of Mass Transfer in Gas Carburizing written by Olga Karabelchtchikova and published by . This book was released on 2007 with total page 139 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: Gas carburizing is an important heat treatment process used for steel surface hardening of automotive and aerospace components. The quality of the carburized parts is determined by the hardness and the case depth required for a particular application. Despite its worldwide application, the current carburizing process performance faces some challenges in process control and variability. Case depth variability if often encountered in the carburized parts and may present problems with i) manufacturing quality rejections when tight tolerances are imposed or ii) insufficient mechanical properties and increased failure rate in service. The industrial approach to these problems often involves trial and error methods and empirical analysis, both of which are expensive, time consuming and, most importantly, rarely yield optimal solutions. The objective for this work was to develop a fundamental understanding of the mass transfer during gas carburizing process and to develop a strategy for the process control and optimization. The research methodology was based on both experimental work and theoretical developments, and included modeling the thermodynamics of the carburizing atmosphere with various enriching gasses, kinetics of mass transfer at the gas-steel interface and carbon diffusion in steel. The models accurately predict: 1) the atmosphere gas composition during the enriching stage of carburizing, 2) the kinetics of carbon transfer at the gas-steel surfaces, and 3) the carbon diffusion coefficient in steel for various process conditions and steel alloying. The above models and investigations were further combined to accurately predict the surface carbon concentration and the carbon concentration profile in the steel during the heat treatment process. Finally, these models were used to develop a methodology for the process optimization to minimize case depth variation, carburizing cycle time and total cycle cost. Application of this optimization technique provides a tradeoff between minimizing the case depth variation and total cycle cost and results in significant energy reduction by shortening cycle time and thereby enhancing carburizing furnace capacity.
Download or read book Mass Transfer and Separation Processes written by Diran Basmadjian and published by CRC Press. This book was released on 2007-04-25 with total page 514 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mass transfer along with separation processes is an area that is often quite challenging to master, as most volumes currently available complicate the learning by teaching mass transfer linked with heat transfer, rather than focusing on more relevant techniques. With this thoroughly updated second edition, Mass Transfer and Separation Processes: Pr
Download or read book Carburising and Nitriding of Iron Alloys written by Emilia Wołowiec-Korecka and published by Springer Nature. This book was released on with total page 195 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mass Transfer written by Koichi Asano and published by John Wiley & Sons. This book was released on 2007-09-24 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: This didactic approach to the principles and modeling of mass transfer as it is needed in modern industrial processes is unique in combining a step-by-step introduction to all important fundamentals with the most recent applications. Based upon the renowned author's successful new modeling method as used for the O-18 process, the exemplary exercises included in the text are fact-proven, taken directly from existing chemical plants. Fascinating reading for chemists, graduate students, chemical and process engineers, as well as thermodynamics physicists.
Download or read book Fundamentals of mass transfer written by V. Kafarov and published by . This book was released on 1975 with total page 510 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Heat Treating 2011 written by ASM Heat Treating Society. Conference and Exposition and published by ASM International. This book was released on 2011-01-01 with total page 327 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mass Transfer written by N. Anantharaman and published by PHI Learning Pvt. Ltd.. This book was released on 2017-06 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book PRINCIPLES OF MASS TRANSFER written by KAL RENGANATHAN SHARMA and published by PHI Learning Pvt. Ltd.. This book was released on 2007-01-21 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book addresses the specific needs of undergraduate chemical engineering students for the two courses in Mass Transfer I and Mass Transfer II. It is also suitable for a course in Downstream Processing for biotechnology students. This self-contained textbook is designed to provide single-volume coverage of the full spectrum of techniques for chemical separations. The operations covered include vapour distillation, fluid adsorption, gas absorption, liquid extraction, solid leaching, gas humidification, solid drying, foam separation, solution crystallization, metal alloying, reverse osmosis, molecular sieves, electrodialysis, and ion exchange. The text also discusses emerging applications such as drug delivery, gel electrophoresis, bleaching, membrane separations, polymer devolatilization, solution crystallization, and gas chromatography. Equipment selection is discussed for different operations. A table of industrial applications for each and every mass transfer unit operation is provided. The worked examples illustrate problems from chemical process and biotechnology industries. Review questions encourage critical thinking, and end-of-chapter problems emphasize grasping of the fundamentals as well as illustrate applications of theory to a wide variety of scenarios. KEY FEATURES • Includes several case studies ranging from manufacture of vitamin C, prilling tower to granulate urea to vanaspati discolouration and wilting of the lettuce. • Introduces generalized Fick’s law of diffusion. • Discusses hollow fibre mass exchangers. • Introduces new concepts such as cosolvent factor, Z step procedure for multistage cross-current extraction.
Download or read book Statistical Approaches With Emphasis on Design of Experiments Applied to Chemical Processes written by Valter Silva and published by BoD – Books on Demand. This book was released on 2018-03-07 with total page 181 pages. Available in PDF, EPUB and Kindle. Book excerpt: Optimized operating conditions for complex systems can be attained by using advanced combinations of numerical and statistical methodologies. One of the most efficient and straightforward solutions relies on the application of statistical methods with an emphasis on the design of experiments (DoEs). Throughout the book, the design and analysis of experiments are conducted involving several approaches, namely, Taguchi, response surface methods, statistical correlations, or even fractional factorial and model-based evolutionary operation designs. This book not only presents a theoretical overview about the different approaches but also contains material that covers the use of the experimental analysis applied to several chemical processes. Some chapters highlight the use of software products to assist experimenters in both the design and analysis stages. It helps graduate students, teachers, researchers, and other professionals who are interested in chemical process optimization and also provides a good basis of theoretical knowledge and valuable insights into the technical details of these tools as well as explains common pitfalls to avoid. The world's leading pharmaceutical companies and local governments are trying to achieve their eradication.
Download or read book Combustion and Mass Transfer written by D Brian Spalding and published by Elsevier. This book was released on 2013-10-22 with total page 419 pages. Available in PDF, EPUB and Kindle. Book excerpt: Combustion and Mass Transfer: A Textbook with Multiple-Choice Exercises for Engineering Students is a 20-chapter lecture text that covers various aspects of combustion and mass transfer. Each of the 20 chapters is provided with a set partly analytical and multiple-choice tutorial exercises, designed to assist the student to understand the material of the lectures. The opening chapters deal with the importance of combustion and mass transfer processes. The succeeding chapters survey the concepts and principles of droplet vaporization, droplet combustion, liquid-propellant rocket, and laminar and turbulent jet. These topics are followed by discussions of laminar and turbulent diffusion flame, kinetically-influenced phenomena, chemical kinetics, and spontaneous ignition. The remaining chapters consider the basic concepts of stirred reactor, flame stabilization, laminar flame propagation, spark ignition, and coal-particle combustion. This book is intended for undergraduate mechanical engineering students.
Download or read book Mass Transfer written by Anthony F. Mills and published by . This book was released on 2001 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Mass Transfer is a derivative version of the mass transfer chapters contained in Heat and Mass Transfer, 1995. New sections have been added dealing with transport in multicomponent systems and the conservation equations for multicomponent gas mixtures. Elementary Mass Transfer, High Mass Transfer Rate Theory, Mass Exchangers, Property Data." -- Publisher.
Download or read book Mass Transfer written by Thomas Kilgore Sherwood and published by McGraw-Hill Companies. This book was released on 1975 with total page 734 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Treatise on Process Metallurgy Volume 1 Process Fundamentals written by and published by Newnes. This book was released on 2013-11-20 with total page 981 pages. Available in PDF, EPUB and Kindle. Book excerpt: Process metallurgy provides academics with the fundamentals of the manufacturing of metallic materials, from raw materials into finished parts or products. Coverage is divided into three volumes, entitled Process Fundamentals, encompassing process fundamentals, extractive and refining processes, and metallurgical process phenomena; Processing Phenomena, encompassing ferrous processing; non-ferrous processing; and refractory, reactive and aqueous processing of metals; and Industrial Processes, encompassing process modeling and computational tools, energy optimization, environmental aspects and industrial design. The work distils 400+ years combined academic experience from the principal editor and multidisciplinary 14-member editorial advisory board, providing the 2,608-page work with a seal of quality. The volumes will function as the process counterpart to Robert Cahn and Peter Haasen’s famous reference family, Physical Metallurgy (1996)--which excluded process metallurgy from consideration and which is currently undergoing a major revision under the editorship of David Laughlin and Kazuhiro Hono (publishing 2014). Nevertheless, process and extractive metallurgy are fields within their own right, and this work will be of interest to libraries supporting courses in the process area. Synthesizes the most pertinent contemporary developments within process metallurgy so scientists have authoritative information at their fingertips Replaces existing articles and monographs with a single complete solution, saving time for busy scientists Helps metallurgists to predict changes and consequences and create or modify whatever process is deployed
Download or read book Mass Transfer in Chemical Engineering Processes written by Jozef Markoš and published by BoD – Books on Demand. This book was released on 2011-11-04 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers several solutions or approaches in solving mass transfer problems for different practical chemical engineering applications: measurements of the diffusion coefficients, estimation of the mass transfer coefficients, mass transfer limitation in separation processes like drying, extractions, absorption, membrane processes, mass transfer in the microbial fuel cell design, and problems of the mass transfer coupled with the heterogeneous combustion. I believe this book can provide its readers with interesting ideas and inspirations or direct solutions of their particular problems.
Download or read book Fundamentals of Momentum Heat and Mass Transfer Revised 6E Wiley E Text Student Package written by James Welty and published by . This book was released on 2014-11-21 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Principles of Mass Transfer written by Jaime Benitez and published by John Wiley & Sons. This book was released on 2022-12-13 with total page 660 pages. Available in PDF, EPUB and Kindle. Book excerpt: Core textbook teaching mass transfer fundamentals and applications for the design of separation processes in chemical, biochemical, and environmental engineering Principles of Mass Transfer teaches the subject of mass transfer fundamentals and their applications to the design of separation processes with enough depth of coverage to guarantee that students using the book will, at the end of the course, be able to specify preliminary designs of the most common separation process equipment. Reflecting the growth of biochemical applications in the field of chemical engineering, the fourth edition expands biochemical coverage, including transient diffusion, environmental applications, electrophoresis, and bioseparations. Also new to the fourth edition is the integration of Python programs, which complement the Mathcad programs of the previous edition. On the accompanying instructor's website, the online appendices contain a downloadable library of Python and Mathcad programs for the example problems in each chapter. A complete solution manual for all end-of-chapter problems, both in Mathcad and Python, is also provided. Some of the topics covered in Principles of Mass Transfer include: Molecular mass transfer, covering concentrations, velocities and fluxes, the Maxwell-Stefan relations, and Fick’s first law for binary mixtures The diffusion coefficient, covering diffusion coefficients for binary ideal gas systems, dilute liquids, and concentrated liquids Convective mass transfer, covering mass-transfer coefficients, dimensional analysis, boundary layer theory, and mass- and heat-transfer analogies Interphase mass transfer, covering diffusion between phases, material balances, and equilibrium-stage operations Gas dispersed gas-liquid operations, covering sparged vessels, tray towers, diameter, and gas-pressure drop, and weeping and entrainment Principles of Mass Transfer is an essential textbook for undergraduate chemical, biochemical, mechanical, and environmental engineering students taking a core course on Separation Processes or Mass Transfer Operations, along with mechanical engineers and mechanical engineering students starting to get involved in combined heat- and mass-transfer applications.
Download or read book Fundamentals of Momentum Heat and Mass Transfer written by James Welty and published by John Wiley & Sons. This book was released on 2014-09-09 with total page 768 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fundamentals of Momentum, Heat and Mass Transfer, Revised, 6th Edition provides a unified treatment of momentum transfer (fluid mechanics), heat transfer and mass transfer. The new edition has been updated to include more modern examples, problems, and illustrations with real world applications. The treatment of the three areas of transport phenomena is done sequentially. The subjects of momentum, heat, and mass transfer are introduced, in that order, and appropriate analysis tools are developed.
