Studies On Filtration Of Monodisperse Aerosols
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Studies On Filtration Of Monodisperse Aerosols
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Author : Victor Kuhn La Mer
language : en
Publisher:
Release Date : 1951
Studies On Filtration Of Monodisperse Aerosols written by Victor Kuhn La Mer and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1951 with Aerosols categories.
Studies On Filtration Of Monodisperse Aerosols
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Author :
language : en
Publisher:
Release Date : 1951
Studies On Filtration Of Monodisperse Aerosols written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1951 with categories.
Filtration Of Monodisperse Electrically Charged Aerosols
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Author :
language : en
Publisher:
Release Date : 1952
Filtration Of Monodisperse Electrically Charged Aerosols written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1952 with Aerosols categories.
A Fundamental Study Of Aerosol Filtration By Fibrous Filters In The Transition Flow Regime
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Author : Zhiqun Zhang
language : en
Publisher:
Release Date : 1989
A Fundamental Study Of Aerosol Filtration By Fibrous Filters In The Transition Flow Regime written by Zhiqun Zhang and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with categories.
Study Of Capture Fibre Wetting And Flow Processes In Wet Filtration And Liquid Aerosol Filtration
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Author : Benjamin James Mullins
language : en
Publisher:
Release Date : 2004
Study Of Capture Fibre Wetting And Flow Processes In Wet Filtration And Liquid Aerosol Filtration written by Benjamin James Mullins and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with Aerosols categories.
Abstract: This thesis examines the particle capture, fibre wetting and droplet flow processes within wet filters collecting solid and liquid aerosols and within filters collecting only liquid aerosols. The processes involved in this type of filtration were examined through a series of experiments and models developed to describe the behaviour of fibre/liquid systems. -- This work can be summarized in 4 categories: (1) The bounce and immediate re-entrainment of liquid and solid monodisperse aerosols under a stable filtration regime (pre cake formation) by wet and dry fibrous filters. In this work it was found that the solid particles generally exhibited a lower fractional filtration efficiency than liquid particles (of the same size), although this difference decreased in the smaller size fractions. However, for the wet filtration regime (each fibre of the filter was coated by a film of water), no significant difference in filtration efficiency was detectable between solid and liquid aerosols. Either the bounce effect of the particles is inhibited by the liquid film, or the filtration conditions in the wet filter are so different that the aerosol properties are less significant with respect to capture. (2) A microscopic study of the effect of fibre orientation on the fibre wetting process and flow of liquid droplets along filter fibres when subjected to airflow and gravity forces was conducted. The flow of the liquid collected by the fibres was observed and measured using a specially developed micro-cell, detailed in the thesis. The experimental results were compared to a theoretical model developed to describe the flow of droplets on fibres. The theory and experimental results showed a good agreement. A sensitivity analysis of the model was performed which showed the droplet radius to be the most significant parameter. The model has the potential to improve filter self-cleaning and minimise water use. (3) An experimental study of the capture of solid and liquid (oil) aerosols on fibrous filters wetted with water. Variable quantities of liquid irrigation were used, and the possibility for subsequent fibre regeneration after clogging or drying was also studied. It was found that self-cleaning (removal of solid aerosols by water) occurred even under heavily dust-laden conditions, and post evaporation of water. With the collection of oil aerosols on fibres wetted with water, a predominance of the barrel shaped droplet on the fibre was observed, with oil droplets displacing water droplets (if the oil and fibre combination created a barrel shaped droplet), creating various compound droplets of oil and water not previously reported in literature. (4) An extensive experimental investigation of the wetting processes of fibre/liquid systems during air filtration (when drag and gravitational forces are acting) has shown many important features, including droplet extension, oscillatory motion, and detachment from fibres as airflow velocity increases. The droplet oscillation is believed to be induced by the onset of the transition from laminar to turbulent flow as droplet size increases. To model such oscillation it was necessary to create a new conceptual model to account for the forces both inducing and preventing such oscillation. The agreement between the model and experimental results is satisfactory for both the radial and transverse oscillations.
Granular Filtration Of Aerosols And Hydrosols
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Author : Chi Tien
language : en
Publisher: Butterworth-Heinemann
Release Date : 2013-10-22
Granular Filtration Of Aerosols And Hydrosols written by Chi Tien and has been published by Butterworth-Heinemann this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-10-22 with Science categories.
Granular Filtration of Aerosols and Hydrosols is concerned with the fundamental aspects of granular filtration of both liquid and gas suspensions. This book takes a unifying approach to the treatment of granular aerosol and hydrosol filtration. The text begins with the introduction of the process of granular filtration and its various applications. Subsequent chapters discuss the aspects of filtration, such as, the macroscopic description of fixed-bed granular filtration; the methods for making representations based on various porous media models for both clean and clogged filter media; the mechanisms of particle deposition; and the trajectory analysis of particle deposition. The final chapter presents and discusses case studies which deal with predicting and calculating the dynamic behavior of granular filtration of hydrosols and aerosols. Researchers in granular filtration and graduate students dealing with separation technology will find the book highly useful.
Advances In Aerosol Gas Filtration
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Author : Kvetoslav R. Spurny
language : en
Publisher: CRC Press
Release Date : 1998-03-27
Advances In Aerosol Gas Filtration written by Kvetoslav R. Spurny and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998-03-27 with Nature categories.
Aerosols are generally associated with damaging effects to the ozone and human health, however, some aerosols enable productions of very clean, highly dispersed materials. Advances in Aerosol Filtration is dedicated to progress in aerosol science, presenting newly developed theories, filtration models, and novel applications of aerosol gas filtration. Topics include new filtration materials, filter testing methods, electrically enhanced filtration, mechanical and chemical filter resistivity, computational models, and much more. This book examines the history and development of aerosol filtration science and also considers research needs for the future.
Handbook On Aerosols
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Author : Richard Dennis
language : en
Publisher:
Release Date : 1976
Handbook On Aerosols written by Richard Dennis and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1976 with Aerosols categories.
Fine Particles
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Author : Benjamin Y.H. Liu
language : en
Publisher: Elsevier
Release Date : 2012-12-02
Fine Particles written by Benjamin Y.H. Liu and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-02 with Technology & Engineering categories.
Fine Particles: Aerosol Generation, Measurement, Sampling, and Analysis is a collection of technical papers presented at the Symposium on Fine Particles held in Minneapolis, Minnesota, on May 28-30, 1975. The symposium aims to explore the developments in instrumentation and experimental techniques for aerosol studies. This book is organized into four parts encompassing 34 chapters that focus on fine particles below about 3.5 μm in diameter. Part I presents the research and development in Europe and Japan on fine particles and aerosols, as well as the aerosol standards development work at the Particle Technology Laboratory, University of Minnesota. This part also includes calibration studies on condensation nuclei counters and the diffusion battery. Significant chapters in Part II are devoted to the common techniques for generation of aerosols of various sizes, from fine particles to monodisperse aerosols. This part further looks into the equipment limitations and problems in producing fine particle aerosols for life testing air cleaning systems and for weather modification experimentation. Part III describes the techniques and equipment used for size-selective aerosol sampling in terms of the design principles applied, the correspondence between design and performance of specific samplers, their applicability to field conditions, and their ability to satisfy sampler acceptance criteria. Part IV deals first with the methods for determination of aerosol properties, including their optical, electrical, and spectral properties. Other chapters examine the principles, mode of operation, and application of processes and instruments for aerosol studies.
Chemical Effects In Particulate Filtration 2 Observations On Particle Loss
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Author : John R. Coleman
language : en
Publisher:
Release Date : 1987
Chemical Effects In Particulate Filtration 2 Observations On Particle Loss written by John R. Coleman 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.
As part of a program of filter testing, monodisperse aerosols ranging in size from 0.01 to 0.30 micrometers were prepared from seventeen materials. With particles of a few hundredths of a micron diameter, losses in the test system lines were frequently much larger than expected, and varied greatly from one material to another. There was no obvious correlation between the magnitude of the effect and the chemical nature of the aerosol. These abnormal losses were greatly reduced or eliminated when the aerosol was passed through a neutralizer, which removed most of the particle charge in this size range. A more systematic study of the phenomenon should be made, with a system designed expressly for the purpose.