A Fundamental Study Of Aerosol Filtration By Fibrous Filters
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A Fundamental Study Of Aerosol Filtration By Fibrous Filters
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Author : Hsu-Chi Yeh
language : en
Publisher:
Release Date : 1972
A Fundamental Study Of Aerosol Filtration By Fibrous Filters written by Hsu-Chi Yeh and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1972 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.
A Fundamental Study Of Filter Loading With Liquid Aerosols
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Author : Gary S. Earnest
language : en
Publisher:
Release Date : 2000
A Fundamental Study Of Filter Loading With Liquid Aerosols written by Gary S. Earnest and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with categories.
Aerosol Filtration
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Author : Dominique Thomas
language : en
Publisher: Elsevier
Release Date : 2016-11-30
Aerosol Filtration written by Dominique Thomas and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-11-30 with Science categories.
Filtration of aerosols is omnipresent in our daily lives, in areas as diverse as health, the protection of people and the environment, and air treatment inside buildings. However, the collection of particles within a filter media is not, contrary to popular belief, linked to a simple screen effect. The phenomena involved are much more complex and require the consideration of aerosol interactions, filter media and process conditions to select the best fiber filter for a given application. Aerosol Filtration, book for students, hygiene or process engineers, fibrous media manufacturers, designers, and filtration system suppliers or users addresses the filtration of aerosols in six chapters. These chapters cover physics and aerosol characterization, the fibrous media, and efficiency and filter clogging by solid or liquid aerosols, with special attention to the filtration of the nanoparticles. Analyses the behavior of fibrous media against solid and liquid aerosols Presents models of efficiency and pressure drop Introduces computing elements for estimating the lifetime of filters Provides guidance for designing filters and predicting their behavior over time
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.
Aerosol Filtration By Fibrous Filters
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Author : B. Hanna
language : en
Publisher:
Release Date : 1975
Aerosol Filtration By Fibrous Filters written by B. Hanna and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1975 with categories.
An Investigation Of Aerosol Filtration Via Fibrous Filters
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Author :
language : en
Publisher:
Release Date : 2004
An Investigation Of Aerosol Filtration Via Fibrous Filters written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with categories.
The most common method of removing particles from a gas stream is via fibrous filters. However, most of the previous studies have been limited to systems consisting of rows of fibers (often in two-dimensional geometries) perpendicular to the flow direction. The current work is aiming to develop an understanding of the role of filter?s microstructure and manufacturing process. In the first part of this study, pressure drop and nanoparticle collection efficiency of lightweight spun-bonded media are simulated by solving the Navier-Stokes equations inside three-dimensional geometries resembling the microstructure of such media. These pressure drop and collection efficiencies showed a perfect agreement with experimental data. In the second part of this work, the influences of fiber length and compaction ratio of filter media on the pressure drop are discussed. Simulation data of staple fiber media have shown good agreement with Davies? empirical equation. Such an agreement indicates that, within the range of dimensions considered, the fiber length has no significant influence on the materials? through-plane permeability as long as the SVF remains constant. Our simulation results for nonwovens with different compaction ratios, together with our experimental data, indicate that pressure drop of the porous media increases with increasing the compaction ratio or temperature of the calender rolls. In the third part of this work, we presented our approach for modeling permeability of fibrous filters with bimodal fiber size distributions (referred to as bimodal filters in this context). The three-dimensional microstructures resembling bimodal filter media with random in-plane fiber orientation distribution were generated to compute their permeability constants. These results were compared with the previous analytical and numerical models as well as our experimental data. Here we concluded that there exists an area-weighted equivalent average diameter for each bimodal filter tha.
Air Filtration
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Author : R.C. Brown
language : en
Publisher: Pergamon
Release Date : 1993-11-02
Air Filtration written by R.C. Brown and has been published by Pergamon this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993-11-02 with Science categories.
The need for clean air has probably never been greater. Many industrial employees need to avoid exposure to airborne particulates, while certain industrial processes demand clean air of exceptional quality. Medical and biological fields rely on sterile air, while filtration can improve air quality in offices, homes and all types of transport. Filters act in a variety of complex and subtle ways. Each chapter introduces its subject matter simply, before tackling the problem in greater depth. The book therefore provides an excellent basis for detailed study, but is also invaluable to anyone needing an overview of the subject.
Aerosols
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Author : Igor Agranovski
language : en
Publisher: John Wiley & Sons
Release Date : 2011-05-16
Aerosols written by Igor Agranovski and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-05-16 with Technology & Engineering categories.
This self-contained handbook and ready reference examines aerosol science and technology in depth, providing a detailed insight into this progressive field. As such, it covers fundamental concepts, experimental methods, and a wide variety of applications, ranging from aerosol filtration to biological aerosols, and from the synthesis of carbon nanotubes to aerosol reactors. Written by a host of internationally renowned experts in the field, this is an essential resource for chemists and engineers in the chemical and materials disciplines across multiple industries, as well as ideal supplementary reading in graduate level courses.
Filtration Of Ultra Small Particles On Fibrous Filters
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Author : Igor Evgenevich Agranovski
language : en
Publisher:
Release Date : 1995
Filtration Of Ultra Small Particles On Fibrous Filters written by Igor Evgenevich Agranovski and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with Aerosols categories.
Abstract: The problem of filtration of liquid aerosols by both wettable and nonwettable filters has been extensively studied and the results of the theoretical calculations together with the experimental results are presented. More realistic models of filtration by both wettable and nonwettable filters have been developed and verified experimentally.--A new instrument has been developed, and used in the experiments, for the measurement of the absolute concentration of aerosols in the gas stream. This instrument is based on the measurement of the initial vapour content of the gas stream simultaneously with the measurement of the vapour content after the total evaporation of aerosol. The concentration of the aerosol is calculated as the difference between these two values. The instrument was developed to provide fast and accurate measurements of aerosol concentration. The main advantages of the instrument are: high accuracy, simplicity of measurement, possibility of use for a wide range of substances, perfect suitability of operation for automatic monitoring technologies, etc. All rights for this instrument have been reserved and the fully automatic version will be available in the near future.--It was found that the efficiency of filtration of aerosol on the wettable filter depends on the thickness of the liquid film on the fibre. This parameter was taken into account in the development of a theoretical model of filtration on wettable fibrous filters. The particle breakthrough problem has been solved by the optimisation of the aspect ratio (the ratio of the height by width) of the wettable filter. On this basis, industrial devices have been developed, patented, and implemented in industry. These devices provide a stable operating efficiency of higher than 99%.--It was found experimentally that the efficiency of filtration of aerosol on the nonwettable filter depends on the diameter of the drop suspended on the filter, and on the area of the filter blocked by drops: this influences the velocity of filtration. All these parameters were taken into account in the development of a theoretical model of filtration on nonwettable fibrous filters.--On the basis of this model, satisfactorily verified by the experiments, an industrial device has been developed. The harnessing of atomisers makes it possible to maintain the efficiency of filtration higher than 99%, even with a relatively high velocity of filtration of 2.7m/s. The new technology is tackling the problem of handling huge amounts of exhaust gases and this is particularly important for cramped installations when the space available for the air pollution control technology is quite limited.--A highly efficient gas cleaning technology has been developed. This technology is based on combining two stages (wet scrubber and filter) of currently utilised air pollution control devices by submerging the fibrous filter into the liquid on the plate. The new device provides an effective division of the main gas stream into ultra-small bubbles which increase the contact area between the gas and liquid phases. It was estimated theoretically and verified experimentally that the efficiency of the proposed 'combined' technology, is 45% higher than the efficiency of the two stages technology. The technology has been patented and will be offered for industrial implementation in the near future.