Tag Archives: cooling

“Advanced Fluid Dynamics” ed. by Hyoung Woo Oh

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"Advanced Fluid Dynamics" ed. by Hyoung Woo Oh
InTeOpP | 2012 | ISBN: 9535102702 9789535102700 | 281 pages | PDF | 18 MB
This book is intended to serve as a reference text for presenting a broad range of topics on fluid dynamics to advanced scientists and researchers.
The chapters have been contributed by the prominent specialists in the field of fluid dynamics cover experimental and numerical fluid dynamics, aeroacoustics, multiphase flow analysis, convective instability, combustion, and turbulence modeling.

“Advanced Fluid Dynamics” ed. by Hyoung Woo Oh
Contents
Preface
1. An Experimental and Computational Study of the Fluid Dynamics of Dense Cooling Air-Mists
2. Direct Numerical Simulations of Compressible Vortex Flow Problems
3. Fluid Dynamics of Gas – Solid Fluidized Beds
4. Fuel Jet in Cross Flow – Experimental Study of Spray Characteristics
5. Influence of Horizontal Temperature Gradients on Convective Instabilities with Geophysical Interest
6. Internal Flows Driven by Wall-Normal Injection
7. Modelling of Turbulent Premixed and Partially Premixed Combustion
8. Multiscale Window Interaction and Localized Nonlinear Hydrodynamic Stability Analysis
9. Stability Investigation of Combustion Chambers with LES
10. Turbulent Boundary Layer Models: Theory and Applications
11. Unitary Qubit Lattice Gas Representation of 2D and 3D Quantum Turbulence
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Hydrogen Safety (Green Chemistry and Chemical Engineering)

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Hydrogen Safety (Green Chemistry and Chemical Engineering) by Fotis Rigas and Paul Amyotte
English | 2012 | ISBN: 1439862311 | 304 pages | PDF | 19 MB
Hydrogen Safety highlights physiological, physical, and chemical hazards associated with hydrogen production, storage, distribution, and use systems. It also examines potential accident scenarios that could occur with hydrogen use under certain conditions.

Hydrogen Safety (Green Chemistry and Chemical Engineering)
The number of potential applications for hydrogen continues to grow-from cooling power station generators to widespread commercial use in hydrogen fuel-cell vehicles and other fuel-cell applications. However, this volatile substance poses unique challenges, including easy leakage, low ignition energy, a wide range of combustible fuel-air mixtures, buoyancy, and its ability to embrittle metals that are required to ensure safe operation.
Focused on providing a balanced view of hydrogen safety-one that integrates principles from physical sciences, engineering, management, and social sciences-this book is organized to address questions associated with the hazards of hydrogen and the ensuing risk associated with its industrial and public use.
* What are the properties of hydrogen that can render it a hazardous substance?
* How have these hazards historically resulted in undesired incidents?
* How might these hazards arise in the storage of hydrogen and with its use in vehicular transportation?
The authors address issues of inherently safer design, safety management systems, and safety culture. They highlight hydrogen storage facilities -which pose greater hazards because of the increased quantities stored and handled-and the dangers of using hydrogen as a fuel for transport. Presented experiments are included to verify computer simulations with the aid of computational fluid dynamics (CFD) of both gaseous and liquefied hydrogen. The book also provides an overview of the European Commission (EC) Network of Excellence for Hydrogen Safety (HySafe) and presents various case studies associated with hydrogen and constructional materials. It concludes with a brief look at future research requirements and current legal requirements for hydrogen safety.
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Solar Technologies for Buildings

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Solar Technologies for Buildings by Ursula Eicker
English | 2003 | ISBN-10: 047148637X | PDF | 336 pages | 5,4 MB
A complete overview of solar technologies relevant to the built environment, including solar thermal energy for heating and cooling, passive solar energy for daylighting and heating supply, and photovoltaics for electricity production Provides practical examples and calculations to enable component and system simulation e.g. Calculation of U-values, I-V curve parameters and radiance distribution modelling.

Solar Technologies for Buildings
Discusses the new trends in thermal energy use, including the architectural integration of collector systems, integrated ventilation photovoltaics facades and solar powered absorption cooling systems
Coverage of cutting-edge applications such as active and passive cooling techniques and results from ongoing research projects
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Miniature Joule-Thomson Cryocooling: Principles and Practice

Ben-Zion Maytal, John M. Pfotenhauer, "Miniature Joule-Thomson Cryocooling: Principles and Practice"
English | ISBN: 1441982841 | 2013 | 666 pages | PDF | 10 MB
This book is the first in English being entirely dedicated to Miniature Joule-Thomson Cryocooling. The category of Joule-Thomson (JT) cryocoolers takes us back to the roots of cryogenics, in 1895, with figures like Linde and Hampson. The "cold finger" of these cryocoolers is compact, lacks moving parts, and sustains a large heat flux extraction at a steady temperature. Potentially, they cool down unbeatably fast. For example, cooling to below 100 K (minus 173 Celsius) might be accomplished within only a few seconds by liquefying argon. A level of about 120 K can be reached almost instantly with krypton. Indeed, the species of coolant plays a central role dictating the size, the intensity and the level of cryocooling. It is the JT effect that drives these cryocoolers and reflects the deviation of the "real" gas from the ideal gas properties. The nine chapters of the book are arranged in five parts.

•The Common Principle of Cyrocoolers shared across the broad variety of cryocooler types
•Theoretical Aspects: the JT effect and its inversion, cooling potential of coolants, the liquefaction process, sizing of heat exchangers, level of pressurization, discharge of pressure vessels
• Practical Aspects: modes of operation (fast cooldown, continuous, multi-staging, hybrid cryocoolers), pressure sources, configuration, construction and technologies, flow adjustment, MEMS, open and closed cycle, cooldown process and similarity, transient behavior
• Mixed Coolant cryocooling: theory, practice and applications
• Special Topics: real gas choked flow rates, gas purity, clog formation, optimal fixed orifice, modeling, cryosurgical devices, warming by the inverse JT effect

The theoretical aspects may be of interest not only to those working with cryocoolers but also for others with a general interest in "real" gas thermodynamics, such as, for example, the inversion of the JT effect in its differential and integral forms, and the exceptional behavior of the quantum gases.

A detailed list of references for each chapter comprises a broad literature survey. It consists of more than 1,200 relevant publications and 450 related patents. The systematically organized content, arranged under a thorough hierarchy of headings, supported by 227 figures and 41 tables, and accompanied by various chronological notes of evolution, enables readers a friendly interaction with the book.

Dr. Ben-Zion Maytal is a Senior Researcher at Rafael-Advanced Defense Systems, Ltd., and an Adjunct Senior Teaching Fellow at the Technion-Israel Institute of Technology, Haifa, Israel.

Prof. John M. Pfotenhauer holds a joint appointment in the Departments of Mechanical Engineering and Engineering Physics at the University of Wisconsin – Madison.

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