Download or read book Micro Scale Regenerative Heat Exchanger written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-21 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: A micro-scale regenerative heat exchanger has been designed, optimized and fabricated for use in a micro-Stirling device. Novel design and fabrication techniques enabled the minimization of axial heat conduction losses and pressure drop, while maximizing thermal regenerative performance. The fabricated prototype is comprised of ten separate assembled layers of alternating metal-dielectric composite. Each layer is offset to minimize conduction losses and maximize heat transfer by boundary layer disruption. A grating pattern of 100 micron square non-contiguous flow passages were formed with a nominal 20 micron wall thickness, and an overall assembled ten-layer thickness of 900 microns. Application of the micro heat exchanger is envisioned in the areas of micro-refrigerators/coolers, micropower devices, and micro-fluidic devices. Moran, Matthew E. and Stelter, Stephan and Stelter, Manfred Glenn Research Center NASA/TM-2004-213353, AIAA Paper 2004-6730, E-114821
Download or read book Microscale Heat Transfer Fundamentals and Applications written by S. Kakaç and published by Springer Science & Business Media. This book was released on 2006-05-20 with total page 517 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains an archival record of the NATO Advanced Institute on Microscale Heat Transfer – Fundamental and Applications in Biological and Microelectromechanical Systems held in Çesme – Izmir, Turkey, July 18–30, 2004. The ASIs are intended to be high-level teaching activity in scientific and technical areas of current concern. In this volume, the reader may find interesting chapters and various Microscale Heat Transfer Fundamental and Applications. The growing use of electronics, in both military and civilian applications has led to the widespread recognition for need of thermal packaging and management. The use of higher densities and frequencies in microelectronic circuits for computers are increasing day by day. They require effective cooling due to heat generated that is to be dissipated from a relatively low surface area. Hence, the development of efficient cooling techniques for integrated circuit chips is one of the important contemporary applications of Microscale Heat Transfer which has received much attention for cooling of high power electronics and applications in biomechanical and aerospace industries. Microelectromechanical systems are subject of increasing active research in a widening field of discipline. These topics and others are the main themeof this Institute.
Download or read book Fundamentals of Heat Exchanger Design written by Ramesh K. Shah and published by John Wiley & Sons. This book was released on 2003-08-11 with total page 978 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comprehensive and unique source integrates the material usually distributed among a half a dozen sources. * Presents a unified approach to modeling of new designs and develops the skills for complex engineering analysis. * Provides industrial insight to the applications of the basic theory developed.
Download or read book NASA Tech Briefs written by and published by . This book was released on 2006 with total page 1286 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Microscale Combustion and Power Generation written by Christopher Cadou and published by Momentum Press. This book was released on 2014-12-26 with total page 720 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent advances in microfabrication technologies have enabled the development of entirely new classes of small-scale devices with applications in fields ranging from biomedicine, to wireless communication and computing, to reconnaissance, and to augmentation of human function. In many cases, however, what these devices can actually accomplish is limited by the low energy density of their energy storage and conversion systems. This breakthrough book brings together in one place the information necessary to develop the high energy density combustion-based power sources that will enable many of these devices to realize their full potential. Engineers and scientists working in energy-related fields will find: • An overview of the fundamental physics and phenomena of microscale combustion; • Presentations of the latest modeling and simulation techniques for gasphase and catalytic micro-reactors; • The latest results from experiments in small-scale liquid film, microtube, and porous combustors, micro-thrusters, and micro heat engines; • An assessment of the additional research necessary to develop compact and high energy density energy conversion systems that are truly practical.
Download or read book Micro Scale Avionics Thermal Management written by and published by . This book was released on 2001 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cryogenic Regenerative Heat Exchangers written by Robert A. Ackermann and published by Springer Science & Business Media. This book was released on 2013-11-21 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt: An in-depth survey of regenerative heat exchangers, this book chronicles the development and recent commercialization of regenerative devices for cryogenic applications. Chapters cover historical background, concepts, practical applications, design data, and numerical solutions, providing the latest information for engineers to develop advanced cryogenic machines. The discussions include insights into the operation of a regenerator; descriptions of the cyclic and fluid temperature distributions in a regenerator; data for various matrix geometries and materials, including coarse and fine bronze, stainless steel-woven wire mesh screens, and lead spheres; and unique operating features of cryocoolers that produce deviations from ideal regenerator theory.
Download or read book Microfabricated Power Generation Devices written by Alexander Mitsos and published by John Wiley & Sons. This book was released on 2009-03-02 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: Energiegewinnung im Mikromaßstab -- eine Alternative zu Energiespeichern (Batterien, Akkumulatoren) für mobile elektrische Geräte? Durchaus, wie dieser Band eindrucksvoll zeigt. Die einzelnen Beiträge, verfasst von international anerkannten Fachleuten, befassen sich mit Grundlagen der Energiegewinnung, Strategien und Designfragen bis hin zur konkreten technischen Umsetzung. Ergänzend werden Themen wie die Verarbeitung und Bereitstellung von Brennstoffen, die Steuerung von Stoff- und Wärmeströmen sowie Fragen der Wirtschaftlichkeit und Qualitätssicherung besprochen.
Download or read book Thermal Energy written by Yatish T. Shah and published by CRC Press. This book was released on 2018-01-12 with total page 1112 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book details sources of thermal energy, methods of capture, and applications. It describes the basics of thermal energy, including measuring thermal energy, laws of thermodynamics that govern its use and transformation, modes of thermal energy, conventional processes, devices and materials, and the methods by which it is transferred. It covers 8 sources of thermal energy: combustion, fusion (solar) fission (nuclear), geothermal, microwave, plasma, waste heat, and thermal energy storage. In each case, the methods of production and capture and its uses are described in detail. It also discusses novel processes and devices used to improve transfer and transformation processes.
Download or read book Handbook of Food Preservation written by Mohammad Shafiur Rahman and published by CRC Press. This book was released on 2020-06-10 with total page 1589 pages. Available in PDF, EPUB and Kindle. Book excerpt: The processing of food is no longer simple or straightforward, but is now a highly inter-disciplinary science. A number of new techniques have developed to extend shelf-life, minimize risk, protect the environment, and improve functional, sensory, and nutritional properties. Since 1999 when the first edition of this book was published, it has facilitated readers’ understanding of the methods, technology, and science involved in the manipulation of conventional and newer sophisticated food preservation methods. The Third Edition of the Handbook of Food Preservation provides a basic background in postharvest technology for foods of plant and animal origin, presenting preservation technology of minimally processed foods and hurdle technology or combined methods of preservation. Each chapter compiles the mode of food preservation, basic terminologies, and sequential steps of treatments, including types of equipment required. In addition, chapters present how preservation method affects the products, reaction kinetics and selected prediction models related to food stability, what conditions need be applied for best quality and safety, and applications of these preservation methods in different food products. This book emphasizes practical, cost-effective, and safe strategies for implementing preservation techniques for wide varieties of food products. Features: Includes extensive overview on the postharvest handling and treatments for foods of plants and animal origin Describes comprehensive preservation methods using chemicals and microbes, such as fermentation, antimicrobials, antioxidants, pH-lowering, and nitrite Explains comprehensive preservation by controlling of water, structure and atmosphere, such as water activity, glass transition, state diagram, drying, smoking, edible coating, encapsulation and controlled release Describes preservation methods using conventional heat and other forms of energy, such as microwave, ultrasound, ohmic heating, light, irradiation, pulsed electric field, high pressure, and magnetic field Revised, updated, and expanded with 18 new chapters, the Handbook of Food Preservation, Third Edition, remains the definitive resource on food preservation and is useful for practicing industrial and academic food scientists, technologists, and engineers.
Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1972 with total page 542 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy a Continuing Bibliography with Indexes written by and published by . This book was released on 1977 with total page 454 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Advanced Power Generation Systems written by Yatish T. Shah and published by CRC Press. This book was released on 2022-12-21 with total page 457 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advanced Power Generation Systems: Thermal Sources evaluates advances made in heat-to-power technologies for conventional combustion heat and nuclear heat, along with natural sources of geothermal, solar, and waste heat generated from the use of different sources. These advances will render the landscape of power generation significantly different in just a few decades. This book covers the commercial viability of advanced technologies and identifies where more work needs to be done. Since power is the future of energy, these technologies will remain sustainable over a long period of time. Key Features Covers power generation and heat engines Details photovoltaics, thermo-photovoltaics, and thermoelectricity Includes discussion of nuclear and renewable energy as well as waste heat This book will be useful for advanced students, researchers, and professionals interested in power generation and energy industries.
Download or read book Handbook of Food Preservation written by M. Shafiur Rahman and published by CRC Press. This book was released on 1999-01-21 with total page 832 pages. Available in PDF, EPUB and Kindle. Book excerpt: With over 2900 references, tables, and drawings, this book covers a wide variety of conventional and potential food preservation techniques. Emphasizing practical, cost-effective, and safe strategies, the book facilitates the selection of the best food ingredients and preservation techniques. It covers postharvest handling, explains conventional preservation methods, details the use of natural antimicrobials, antioxidants, edible coating, nitrites, food packaging, and HACCP in food safety. Highlighting the effects of preservation methods on the functional and sensory properties of foods, the book also features the exact mode or mechanisms involved in each preservation method.
Download or read book Dynamics of Regenerative Heat Transfer written by John A Willmott and published by CRC Press. This book was released on 2001-08-08 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: The author, a respected authority on heat recovery, provides up-to-date and comprehensive coverage of the modelling of the process of heat transfer embodied in regenerative devices. He brings together material on storage and thermal generators and gives great emphasis to non-linear problems including the representation of temperature dependence of thermophysical properties involved.; In ten dynamic chapters, you will find coverage of: the storage of heat in packing; the Single Blow problem; basic concepts in counterflow thermal regenerators; counterflow regenerators; finite conductivity models; non-linear models of counterflow regenerators; transient response of counterflow regenerators; and parallel flow regenerators. Bringing together material developed over the past twenty years, the book will be of great interest to mechanical and chemical engineers as well as applied mathematicians concerned with models of heat transfer processes.
Download or read book Structural Optimization and Experimental Investigation of the Organic Rankine Cycle for Solar Thermal Power Generation written by Jing Li and published by Springer. This book was released on 2014-12-09 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: Compared to the conventional Rankine cycle using water, the ORC can create efficient expansion at low power, avoid superheater and offer higher thermal efficiency in low temperature application. Small-scale ORCs from several kWe to a few hundred kWe offer great potential for meeting the residential demand on heat and power, and are of growing interest in scientific and technical fields. However, one critical problem is the decreased device efficiency and cost-effectiveness that arises when the ORC is scaled down. In this thesis, the ORC is combined with low concentration-ratio solar collectors. The background, research trend, merits and importance of the solar ORC are described. To reduce the thermodynamic irreversibility and the cost of the system, three innovative solutions are proposed: solar ORC without heat transfer fluid (HTF), which employs two-stage collectors and heat storage units; hybrid solar power generation based on ORC and amorphous silicon cells; osmosis-driven solar ORC. Heat collection, storage and power conversion are optimized. The design, construction and test of a prototype are conducted, demonstrating the feasibility of the ORC for small-scale cogeneration. Special attention is paid to the variable operation and parameter design with respect to the condensation temperature.
Download or read book Cryopumping written by René A. Haefer and published by Oxford University Press, USA. This book was released on 1989 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers the physical theory, practical techniques, and applications of cryopumping--the production of a vacuum through the use of low temperatures. The importance of this technique has increased greatly in recent years due to the proliferation of new uses and the demand in many vacuum procedures for ultraclean gas atmospheres, low final pressures, and high specific pumping speeds. The author reviews recent developments that have resulted in safer pumps that allow full automation and that are superior to conventional pumps in installation and operation costs.
