Micro Scale Mass Transfer Variations During Electrodeposition
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Micro Scale Mass Transfer Variations During Electrodeposition
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Author :
language : en
Publisher:
Release Date : 1991
Micro Scale Mass Transfer Variations During Electrodeposition written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with categories.
Results of two studies on micro-scale mass-transfer enhancement are reported: (1) Profiled cross-sections of striated zinc surfaces deposited in laminar channel flow were analyzed with fast-fourier transforms (FFT) to determine preferred striation wavelengths. Striation frequency increases with current density until a minimum separation between striae of 150 [mu]m is reached. Beyond this point, independent of substrate used, striae meld together and form a relatively smooth, nodular deposit. Substrates equipped with artificial micron-sized protrusions result in significantly different macro-morphology in zinc deposits. Micro-patterned electrodes (MPE) with hemispherical protrusions 5 [mu]m in diameter yield thin zinc striae at current densities that ordinarily produce random nodular deposits. MPEs with artificial hemi-cylinders, 2.5 [mu]m in height and spaced 250 [mu]m apart, form striae with a period which matches the spacing of micron-sized ridges. (2) A novel, corrosion-resistant micromosaic electrode was fabricated on a silicon wafer. Measurements of mass-transport enhancement to a vertical micromosaic electrode caused by parallel bubble streams rising inside of the diffusion boundary-layer demonstrated the presence of two co-temporal enhancement mechanisms: surface-renewal increases the limiting current within five bubble diameters of the rising column, while bubble-induced laminar flows cause weaker enhancement over a much broader swath. The enhancement caused by bubble curtains is predicted accurately by linear superposition of single-column enhancements. Two columns of smaller H2 bubbles generated at the same volumetric rate as a single column of larger bubbles cause higher peak and far-field enhancements. 168 refs., 96 figs., 6 tabs.
Micro Scale Mass Transfer Enhancement At Electrode Surfaces
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Author : Davor Peter Sutija
language : en
Publisher:
Release Date : 1991
Micro Scale Mass Transfer Enhancement At Electrode Surfaces written by Davor Peter Sutija and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with categories.
Microscale Resolution Of Interfacial Mass Transfer Rates In Electrode Processes
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Author : Gina Marie Whitney
language : en
Publisher:
Release Date : 1987
Microscale Resolution Of Interfacial Mass Transfer Rates In Electrode Processes written by Gina Marie Whitney and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with categories.
Effect Of Microscale Protrusions On Local Fluid Flow And Mass Transport In The Presence Of Forced Convection
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Author : Gerhard Walter Matzen
language : en
Publisher:
Release Date : 1997
Effect Of Microscale Protrusions On Local Fluid Flow And Mass Transport In The Presence Of Forced Convection written by Gerhard Walter Matzen and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with categories.
Scientific And Technical Aerospace Reports
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Author :
language : en
Publisher:
Release Date : 1991
Scientific And Technical Aerospace Reports written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with Aeronautics categories.
Energy Research Abstracts
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Author :
language : en
Publisher:
Release Date : 1992
Energy Research Abstracts written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992 with Power resources categories.
Electric And Hybrid Vehicles Program Annual Report To Congress Sixteenth Fiscal Year 1992
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Author :
language : en
Publisher:
Release Date : 1993
Electric And Hybrid Vehicles Program Annual Report To Congress Sixteenth Fiscal Year 1992 written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with Electric vehicles categories.
Zinc Electrowinning Analysis In A Modified Hull Cell
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Author : Thomas Dean McColm
language : en
Publisher:
Release Date : 1998
Zinc Electrowinning Analysis In A Modified Hull Cell written by Thomas Dean McColm and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with categories.
Heat And Mass Transfer
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Author : Md Monwar Hossain
language : en
Publisher: BoD – Books on Demand
Release Date : 2011-09-22
Heat And Mass Transfer written by Md Monwar Hossain and has been published by BoD – Books on Demand this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-09-22 with Science categories.
This book covers a number of topics in heat and mass transfer processes for a variety of industrial applications. The research papers provide advances in knowledge and design guidelines in terms of theory, mathematical modeling and experimental findings in multiple research areas relevant to many industrial processes and related equipment design. The design of equipment includes air heaters, cooling towers, chemical system vaporization, high temperature polymerization and hydrogen production by steam reforming. Nine chapters of the book will serve as an important reference for scientists and academics working in the research areas mentioned above, especially in the aspects of heat and mass transfer, analytical/numerical solutions and optimization of the processes.
Comprehensive Treatise Of Electrochemistry
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Author : John Bockris
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-03-09
Comprehensive Treatise Of Electrochemistry written by John Bockris and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-03-09 with Science categories.
It is now time for a comprehensive treatise to look at the whole field of electrochemistry. The present treatise was conceived in 1974, and the earliest invitations to authors for contributions were made in 1975. The completion of the early volumes has been delayed by various factors. There has been no attempt to make each article emphasize the most recent situation at the expense of an overall statement of the modern view. This treatise is not a collection of articles from Recent Advances in Electrochemistry or Modern Aspects of Electrochemistry. It is an attempt at making a mature statement about the present position in the vast area of what is best looked at as a new interdisciplinary field. Texas A & M University J. O'M. Bockris University of Ottawa B. E. Conway Case Western Reserve University Ernest Yeager & M University Texas A Ralph E. White Preface to Volume 2 This volume brings together some dozen processes well known to the electro chemist and treats them according to their various degrees of importance. The production of hydrogen is one of the more important processes, particularly with respect to the prospects of a hydrogen economy. No one would doubt, however, that the most commercially important electrochemical processes at the present time are the production of aluminum and of chlorine. Each of these processes has a separate chapter devoted to it.