Download or read book Improved Heat Transfer by Application of Centrifugal Forces written by Kurt Goldman and published by . This book was released on 1962 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Effect of Centrifugal Force on the Forced Convection Heat Transfer Coefficient written by William Stanley Luberda and published by . This book was released on 1951 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book On the Effects of Centrifugal Forces in Air water Two phase Flow Regime Transitions of an Adiabatic Helical Geometry written by Eric P. Young and published by . This book was released on 2006 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two-phase flow in helical conduits is important in many industries where reaction between components, heat transfer, and mass transport are utilized as processes. The helical design is chosen for the effects of secondary flow patterns that reduce axial dispersion, increased heat transfer, and also their compact design. The first is a result of the secondary flow, which continually transports fluid from the near wall region to the bulk of the flow. In single-phase chemical reactor design this secondary flow increases radial mixing and reduces axial dispersion. In heat exchanger design it increases laminar heat transfer while extending the Reynolds number range of laminar flow. A literature review of the work on helical pipe flow shows that the vast majority of the work is on toroidal single-phase flow, and analyses of two-phase flow are sparse. This dissertation addresses this void by presenting an analytical model of the stratified and annular flow regime transitions in helical conduits, by consideration of the governing equations and mechanisms for transition in the toroidal geometry including the major impact of pitch. Studies have taken a similar approach for straight inclined horizontal and vertical geometries, but none have been found which resolve two-phase flow in the curved geometry of a helix. The main issue in resolving the flow in this geometry is that of determining appropriate inter-phase momentum transfer, and the appropriate friction correlations for wall interaction. These issues are resolved to yield a novel attempt at modeling helical two-phase flow. Pitch is considered negligible in introduction of torsion, while the dominating influence of the centrifugal force is retained. The formulation of the governing equations are taken from a general vector form that is readily extended to a true helix that includes torsion. The predictive capability of the current model is compared to the data and observations of the two-phase helical flow studies available in the open literature. The new model is found to be accurate in the linear asymptote, and to correctly predict the trends of increased liquid hold-up, a shift in the transition boundary between non-stratified and stratified flows such that the non-stratified regimes are favored, and the new liquid equilibrium height calculations shift the transition between annular and intermittent flows such that the intermittent regime is favored. The current model is an improvement over the previous methods in that it has the same accuracy of prediction of linear flowing inclined flows as methods developed for the linear flow condition, and improves the prediction of curved flow regimes by correctly shifting the boundaries as described above.
Download or read book Introduction to Enhanced Heat Transfer written by Sujoy Kumar Saha and published by Springer. This book was released on 2019-06-29 with total page 103 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Brief stands as a primer for heat transfer fundamentals in heat transfer enhancement devices, the definition of heat transfer area, passive and active enhancement techniques and their potential and benefits and commercial applications. It further examines techniques and modes of heat transfer like single-phase flow and two-phase flow, natural and forced convection, radiation heat transfer and convective mass transfer.
Download or read book Boiling Songs and Associated Mechanical Vibrations written by H. Firstenberg and published by . This book was released on 1960 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1968 with total page 1144 pages. Available in PDF, EPUB and Kindle. Book excerpt: NSA is a comprehensive collection of international nuclear science and technology literature for the period 1948 through 1976, pre-dating the prestigious INIS database, which began in 1970. NSA existed as a printed product (Volumes 1-33) initially, created by DOE's predecessor, the U.S. Atomic Energy Commission (AEC). NSA includes citations to scientific and technical reports from the AEC, the U.S. Energy Research and Development Administration and its contractors, plus other agencies and international organizations, universities, and industrial and research organizations. References to books, conference proceedings, papers, patents, dissertations, engineering drawings, and journal articles from worldwide sources are also included. Abstracts and full text are provided if available.
Download or read book Improving Heat Exchanger Design written by University of Michigan. Engineering Summer Conferences and published by . This book was released on 1975 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Convective Heat and Mass Transfer in Rotating Disk Systems written by Igor V. Shevchuk and published by Springer Science & Business Media. This book was released on 2009-12-01 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book is devoted to investigation of a series of problems of convective heat and mass transfer in rotating-disk systems. Such systems are widespread in scienti?c and engineering applications. As examples from the practical area, one can mention gas turbine and computer engineering, disk brakes of automobiles, rotating-disk air cleaners, systems of microclimate, extractors, dispensers of liquids, evaporators, c- cular saws, medical equipment, food process engineering, etc. Among the scienti?c applications, it is necessary to point out rotating-disk electrodes used for experim- tal determination of the diffusion coef?cient in electrolytes. The system consisting of a ?xed disk and a rotating cone that touches the disk by its vertex is widely used for measurement of the viscosity coef?cient of liquids. For time being, large volume of experimental and computational data on par- eters of ?uid ?ow, heat and mass transfer in different types of rotating-disk systems have been accumulated, and different theoretical approaches to their simulation have been developed. This obviously causes a need of systematization and generalization of these data in a book form.
Download or read book Improving the Thermal Processing of Foods written by P Richardson and published by Woodhead Publishing. This book was released on 2004-07-16 with total page 536 pages. Available in PDF, EPUB and Kindle. Book excerpt: It has long been recognised that thermal technologies must ensure the safety of food without compromising food quality.
Download or read book Centrifugally pumped Thermosiphons for Motor Rotor Cooling written by Seth Aber McElhinney and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This research has developed a new approach to provide improved cooling and heat spreading in electric machine rotors using centrifugally-pumped revolving thermosiphons (also known as wickless heat pipes). Design concepts are presented that offer the following key advantages: (1) high thermal performance across a wide range of heat load and speed operating points; (2) low-impedance axial heat paths inside the rotor; (3) excellent candidates for integration into electric machine designs offering improved thermal, electromagnetic, and structural performance, as well as practical, cost-effective manufacturing.This research program takes advantage of the centrifugal force developed in the rotors of electric machines to provide effective inertial pumping over a wide range of operating conditions. In addition, the new thermosiphon design is compatible with existing standard electric machine manufacturing techniques and cooling needs. The condenser's fin and ramp structure provides high condensation performance. Surface textures to promote effective nucleate boiling at high speeds is discussed, and fluid fill factor is analyzed. Applications include permanent-magnet synchronous machines, wound-field synchronous machines, and induction machines designed for high-performance applications such as electric traction machines in hybrid- and battery-electric vehicles. Benefits of these thermosiphons include increased steady-state power and torque density, improved and more consistent efficiency, and reduced permanent magnet volume and cost in PM synchronous machines. Other rotating applications where enhanced axial heat spreading is useful include centrifugal gas compression, chemical processes, and machine tools. Prototypes of the revolving thermosiphon concept were designed and fabricated to evaluate its capability for cooling and heat spreading in electric machine rotors. Experimental tests provided valuable opportunities to successfully validate the boiling and condensation models used for the analysis and design of these thermosiphons. A rotating test frame was fabricated to verify the effects of rotational speed on the boiling and condensation behavior and to explore the effects of alternative surface designs. Experimental test results with the demonstrator thermosiphons match well with analytical model results, building confidence in these models as a useful design tool. This experimental work has succeeded in extending key concepts found in prior work on heat transfer surfaces for boiling and condensation from static to rotating applications.
Download or read book Progress in Heat and Mass Transfer written by and published by . This book was released on 1969 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1992 with total page 562 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Trends in Mechanical and Biomedical Design written by Esther Titilayo Akinlabi and published by Springer Nature. This book was released on 2020-08-20 with total page 1003 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book comprises select papers presented at the International Conference on Mechanical Engineering Design (ICMechD) 2019. The volume focuses on the recent trends in design research and their applications across the mechanical and biomedical domain. The book covers topics like tribology design, mechanism and machine design, wear and surface engineering, vibration and noise engineering, biomechanics and biomedical engineering, industrial thermodynamics, and thermal engineering. Case studies citing practical challenges and their solutions using appropriate techniques and modern engineering tools are also discussed. Given its contents, this book will prove useful to students, researchers as well as practitioners.
Download or read book Geothermal Energy written by Ingrid Stober and published by Springer Nature. This book was released on 2021-05-24 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: The internal heat of the planet Earth represents an inexhaustible reservoir of thermal energy known as Geothermal Energy. The 2nd edition of the book covers the geologic and technical aspects of developing all forms of currently available systems using this "renewable" green energy. The book presents the distribution and transport of thermal energy in the Earth. Geothermal Energy is a base load energy available at all times independent of climate and weather. The text treats the efficiency of diverse shallow near surface installations and deep geothermal systems including hydrothermal and petrothermal techniques and power plants in volcanic high-enthalpy fields. The book also discusses environmental aspects of utilizing different forms of geothermal energy, including induced seismicity, noise pollution and gas release to the atmosphere. Chapters on hydraulic well tests, chemistry of deep hot water, scale formation and corrosion, development of geothermal probes, well drilling techniques and geophysical exploration complete the text. This book, for the first time, covers the full range of utilization of Geothermal Energy.
Download or read book Optimization in Food Engineering written by Ferruh Erdogdu and published by CRC Press. This book was released on 2008-12-09 with total page 788 pages. Available in PDF, EPUB and Kindle. Book excerpt: While mathematically sophisticated methods can be used to better understand and improve processes, the nonlinear nature of food processing models can make their dynamic optimization a daunting task. With contributions from a virtual who's who in the food processing industry, Optimization in Food Engineering evaluates the potential uses and limitati
Download or read book CRC Handbook of Thermal Engineering written by Raj P. Chhabra and published by CRC Press. This book was released on 2017-11-08 with total page 1801 pages. Available in PDF, EPUB and Kindle. Book excerpt: The CRC Handbook of Thermal Engineering, Second Edition, is a fully updated version of this respected reference work, with chapters written by leading experts. Its first part covers basic concepts, equations and principles of thermodynamics, heat transfer, and fluid dynamics. Following that is detailed coverage of major application areas, such as bioengineering, energy-efficient building systems, traditional and renewable energy sources, food processing, and aerospace heat transfer topics. The latest numerical and computational tools, microscale and nanoscale engineering, and new complex-structured materials are also presented. Designed for easy reference, this new edition is a must-have volume for engineers and researchers around the globe.
Download or read book Chemical Engineering Volume 2 written by J H Harker and published by Elsevier. This book was released on 2013-10-22 with total page 1219 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chemical Engineering Volume 2 covers the properties of particulate systems, including the character of individual particles and their behaviour in fluids. Sedimentation of particles, both singly and at high concentrations, flow in packed and fluidised beads and filtration are then examined. The latter part of the book deals with separation processes, such as distillation and gas absorption, which illustrate applications of the fundamental principles of mass transfer introduced in Chemical Engineering Volume 1. In conclusion, several techniques of growing importance - adsorption, ion exchange, chromatographic and membrane separations, and process intensification - are described. A logical progression of chemical engineering concepts, volume 2 builds on fundamental principles contained in Chemical Engineering volume 1 and these volumes are fully cross-referenced Reflects the growth in complexity and stature of chemical engineering over the last few years Supported with further reading at the end of each chapter and graded problems at the end of the book
