Download or read book Transitional Particle Loading of Air Filters written by Sho Sol Takagaki and published by . This book was released on 2006 with total page 582 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Investigation of HEPA Filters Subjected to Tornado Pressure Pulses written by and published by . This book was released on 1978 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Aerosol Filtration written by Dominique Thomas and published by Elsevier. This book was released on 2016-11-30 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2006 with total page 774 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Aerosol Filtration written by Qisheng Ou and published by . This book was released on 2013 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: Particle control technologies are essential in many manufacturing industries (electronic and chemical industrial, mineral processing, and food and beverages) as well as in pollution abatement and environmental control (for example, post processing of power plant emissions and clean rooms). A variety of particle control technologies using various mechanisms have been developed. Among these technologies, filtration is known as the most economical for achieving high removal efficiency of fine aerosol particles. In numerous existing studies on the loading process of particle filtration, two assumptions are usually made: (1) particles are spherical or nearly spherical in shape and (2) particles are uniformly deposited on filter medium. However, in practical applications, these two assumptions are not always met. Agglomerate particles with non-spherical shape are ubiquitous in industrial processing and ambient environment, and non-uniform particle depositions are often met. The overall objective of this dissertation is to advance our current knowledge on these two specific areas of aerosol filtration: (1) agglomerate particle filtration and (2) particle deposition uniformity. For the first part, Agglomerate Particle Filtration, a system which is able to generate stable and controllable agglomerate particles was developed. Both branch-like and chain-like agglomerate particles were generated through the system, and their morphologies were characterized using both online and offline methods. Series of filter loading experiments were performed to study the filtration behavior of fibrous filters loaded with agglomerate particles over the entire filter lifetime, including the initial filtration, depth filtration, transition filtration and surface filtration. The filtration and loading of agglomerate particles exhibited different behaviors than those of spherical particles. Different effects, including filter media, fractal dimension of agglomerate particles, and the overall mobility size of agglomerate particles, on the loading behavior were explored. Moreover, for predicting the loading behavior of agglomerate particles, two semi-empirical models were proposed by modifying existing models. Good agreements were found for both of them. For the second part, Particle Deposition Uniformity, particle depositions under two scenarios were investigated. In the first scenario, particle deposition along pleated filter panels was studied using a COMSOL-Matlab based numerical model. The evolutions of particle deposition profile and pressure drop of pleated filter panels during dynamic particle loading process were investigated. The model was validated by experimental loading tests. In the second scenario, particle deposition uniformity on HVAC entrance filter panels installed in an aircraft was studied by a computational fluid dynamics model. The flow fields around entrance filter panels and particle depositions on them were investigated. Factors affecting particle deposition uniformity were identified and explored.
Download or read book Air Pollution Calculations written by Daniel A. Vallero and published by Elsevier. This book was released on 2019-05-03 with total page 571 pages. Available in PDF, EPUB and Kindle. Book excerpt: Air Pollution Calculations introduces the equations and formulae that are most important to air pollution, but goes a step further. Most texts lack examples of how these equations and formulae apply to the quantification of real-world scenarios and conditions. The ample example calculations apply to current air quality problems, including emission inventories, risk estimations, biogeochemical cycling assessments, and efficiencies in air pollution control technologies. In addition, the book explains thermodynamics and fluid dynamics in step-by-step and understandable calculations using air quality and multimedia modeling, reliability engineering and engineering economics using practical examples likely to be encountered by scientists, engineers, managers and decision makers. The book touches on the environmental variables, constraints and drivers that can influence pollutant mass, volume and concentrations, which in turn determine toxicity and adverse outcomes caused by air pollution. How the pollutants form, move, partition, transform and find their fate are explained using the entire range of atmospheric phenomena. The control, prevention and mitigation of air pollution are explained based on physical, chemical and biological principles which is crucial to science-based policy and decision-making. Users will find this to be a comprehensive, single resource that will help them understand air pollution, quantify existing data, and help those whose work is impacted by air pollution. Explains air pollution in a comprehensive manner, enabling readers to understand how to measure and assess risks to human populations and ecosystems actually or potentially exposed to air pollutants Covers air pollution from a multivariate, systems approach, bringing in atmospheric processes, health impacts, environmental impacts, controls and prevention Facilitates an understanding of broad factors, like climate and transport, that influence patterns and change in pollutant concentrations, both spatially and over time
Download or read book Diesel Engine Transient Operation written by Constantine D. Rakopoulos and published by Springer Science & Business Media. This book was released on 2009-03-10 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt: Traditionally, the study of internal combustion engines operation has focused on the steady-state performance. However, the daily driving schedule of automotive and truck engines is inherently related to unsteady conditions. In fact, only a very small portion of a vehicle’s operating pattern is true steady-state, e. g. , when cruising on a motorway. Moreover, the most critical conditions encountered by industrial or marine engines are met during transients too. Unfortunately, the transient operation of turbocharged diesel engines has been associated with slow acceleration rate, hence poor driveability, and overshoot in particulate, gaseous and noise emissions. Despite the relatively large number of published papers, this very important subject has been treated in the past scarcely and only segmentally as regards reference books. Merely two chapters, one in the book Turbocharging the Internal Combustion Engine by N. Watson and M. S. Janota (McMillan Press, 1982) and another one written by D. E. Winterbone in the book The Thermodynamics and Gas Dynamics of Internal Combustion Engines, Vol. II edited by J. H. Horlock and D. E. Winterbone (Clarendon Press, 1986) are dedicated to transient operation. Both books, now out of print, were published a long time ago. Then, it seems reasonable to try to expand on these pioneering works, taking into account the recent technological advances and particularly the global concern about environmental pollution, which has intensified the research on transient (diesel) engine operation, typically through the Transient Cycles certification of new vehicles.
Download or read book Fundamentals of Air Cleaning Technology and Its Application in Cleanrooms written by Zhonglin Xu and published by Springer Science & Business Media. This book was released on 2013-10-10 with total page 871 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fundamentals of Air Cleaning Technology and Its Application in Cleanrooms sets up the theoretical framework for cleanrooms. New ideas and methods are presented, which include the characteristic index of cleanrooms, uniform and non-uniform distribution characteristics, the minimum sampling volume, a new concept of outdoor air conditioning and the fundamentals of leakage-preventing layers. Written by an author who can look back on major scientific achievements and 50 years of experience in this field, this book offers a concise and accessible introduction to the fundamentals of air cleaning technology and its application. The work is intended for researchers, college teachers, graduates, designers, technicians and corporate R&D personnel in the field of HVAC and air cleaning technology. Zhonglin Xu is a senior research fellow at China Academy of Building Research.
Download or read book Requirements for Fire Resistant High Efficiency Particulate Air Filters written by and published by . This book was released on 1966 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book TID written by and published by . This book was released on 1961 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Effect of Electrical Mobility of Aerosol Particles on Air Filtration written by Pinaki Prosad Sinha and published by . This book was released on 1988 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Air Filtration written by Charles Norman Davies and published by . This book was released on 1973 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Harnessing Theory for Practical Applications written by and published by . This book was released on 1982 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Industrial and Technological Applications of Transport in Porous Materials written by J.M.P.Q. Delgado and published by Springer Science & Business Media. This book was released on 2013-08-17 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this book, Industrial and Technological Applications of Transport in Porous Materials, is to provide a collection of recent contributions in the field of heat and mass transfer in porous media and their industrial and technological applications. The main benefit of the book is that it discusses some of the most important topics related to transport phenomenon in engineering and their future applications. It includes a set of new technological applications in the field of heat and mass transfer phenomena in a porous medium domain, such as, drying technology, filtration, infrared thermography, energy, recycling, etc. At the same time, these topics will be going to the encounter of a variety of scientific and engineering disciplines, such as chemical, civil, agricultural, mechanical engineering, etc. The book is divided in several chapters that intend to be a resume of the current state of knowledge for benefit of professional colleagues.
Download or read book Journal of the Air Waste Management Association written by and published by . This book was released on 2006-07 with total page 950 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Urban Airborne Particulate Matter written by Fathi Zereini and published by Springer Science & Business Media. This book was released on 2011-02-16 with total page 663 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the most up-to-date research and information regarding the origin, chemistry, fate and health impacts of airborne particulate matter in urban areas, a topic which has received a great deal of attention in recent years due to documented relationships between exposure and health effects such as asthma. With internationally recognised researchers and academics presenting their work and key concepts and approaches from a variety of disciplines, including environmental and analytical chemistry, biology, toxicology, mineralogy and the geosciences, this book addresses the topic of urban airborne particulate matter in a comprehensive, multidisciplinary manner. Topics and research addressed in the book range from common methodological approaches used to sample and analyse the composition of airborne particulates to our knowledge regarding their potential to impact human health and the various policy approaches taken internationally to regulate particulate matter levels.
Download or read book The Effect of Particle Size and Dust Loading on the Shape of Alpha Pulse Height Spectra of Air Sample Filters written by D. C. Stevens and published by . This book was released on 1963 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:
