Download or read book Contraction Heat Transfer Coefficient Correlation for Rectangular Pin Fin Heat Sinks written by Stephan Schmitt and published by . This book was released on 2010 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Study of Forced Convection Heat Transfer from an Array of Elliptical Pin Fin Heat Sink written by Independently Published and published by . This book was released on 2018-08-16 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt: In modernization, heat sink plays a key role to enhance heat transfer. A heat sink is a device which helps to dissipate the heat from heated surface using direct contact or radiant thermal contact. Heat sinks are basically used to enhance the heat transfer from the heated surface to eliminate the effect of overheating or burning. The heat sinks made up of copper and aluminum and directly attached to the heated surface. Extended surfaces are commonly used to improve the heat transfer in many industries. The extended surface of heat sink helps to increase the surface area in contact with air. It maintains the thermal stability of the system in limits for every electrical and electronic component of any system. There are different kinds of heat sink with different fin geometries and operating with natural or forced convection. Most of the work has been done on rectangular pin fin and circular pin fin under natural and forced convection. In present work, the modeling and fabrication is done on elliptical heat sink and perforated elliptical heat sink with circular perforation. In this work different wattages (100, 150, 200 and 250 W) are used with Reynolds number ranging from 8400 to 21000. The various flow velocities used are 4m/sec, 6m/sec, 8m/sec and 10m/sec. The perforation is done in the middle of the pin fin to achieve maximum heat transfer. The overall performance of the pin fin heat sink is affected by the perforation. In present study the experiment analysis is performed w.r.t the heat transfer coefficient, temperature variation and nusselt number for heat sinks. In experiment the working fluid is used as air. In the present work two different arrangements: elliptical pin fin heat sink and perforated elliptical pin fin heat sink are selected. Within the Reynolds number range 8400 to 21000 perforated elliptical pin fin heat has higher heat transfer coefficient in comparison to elliptical pin fin heat sink. The temperature variation in perforated elliptical pin fin heat sink is more as compare to other one. It was observe that the Nusselt number is directly proportional to the number of perforations. As the number perforation or perforation size increases the heat transfer coefficient also increases.
Download or read book Resource Constrained Heat Sink Optimization written by Madhusudan Krishnan Iyengar and published by . This book was released on 2003 with total page 572 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Modeling of Fluid Flow and Heat Transfer for Optimization of Pin Fin Heat Sinks written by Waqar Khan and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Thermal Computations for Electronics written by Gordon N. Ellison and published by CRC Press. This book was released on 2020-05-13 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first edition of Thermal Computations for Electronics: Conductive, Radiative, and Convective Air Cooling was based on the author's lecture notes that he developed over the course of nearly 40 years of thermal design and analysis activity, the last 15 years of which included teaching a university course at the senior undergraduate and graduate levels. The subject material was developed from publications of respected researchers and includes topics and methods original to this author. Numerous students have contributed to both the first and second editions, the latter corrected, sections rewritten (e.g., radiation spatial effects, Green's function properties for thermal spreading, 1-D FEA theory and application), and some new material added. The flavor and organization of the first edition have been retained, whereby the reader is guided through the analysis process for systems and then components. Important new material has been added regarding altitude effects on forced and buoyancy driven airflow and heat transfer. The first 20% of the book is devoted to the prediction of airflow and well-mixed air temperatures in systems, circuit board channels, and heat sinks, followed by convective (PCB-mounted components included), radiative, and conductive heat transfer and the resultant temperatures in electronic equipment. Detailed application examples illustrate a variety of problems. Downloads (from the CRC website) include: MathcadTM text examples, exercise solutions (adopting professors only) plus PDF lecture aids (professors only), and a tutorial (Chapter 14) using free FEA software to solve a thermal spreading problem. This book is a valuable professional resource for self-study and is ideal for use in a course on electronics cooling. It is well-suited for a first course in heat transfer where applications are as important as theory.
Download or read book Heat Sink Analytical Modelling written by Joaquim Guitart Corominas and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Electronics has leaded most technological advances of the past 60 years. There are technologies with domains particularly developed for electronics such as material science, electromagnetism, system dynamics and also heat transfer. The relation to heat transfer is because the heat generation of electronics devices. Commonly, these devices need additional cooling in order to avoid extreme temperatures inside it. Heat sinks allow this supplementary cooling, so they are omnipresent in electronic assemblies. Heat sink can work by forced convection, natural convection or liquid cooling. Normally in electronic assemblies they are made of materials with good thermal conduction such as aluminum or copper. The heat transfer in sinks is especially by convection, but also by radiation. Radiation heat transfer can represent up to 30% of heat rate in natural convection heat sinks. The manufacturing process is usually by extrusion, but also by cast, bonded, folded, skived and stamped processes. There are a lot of geometries available and they are generally adapted to each specific requirement. However, a very common heat sink profile is the rectangular parallel fin one. This profile forms Uchannels, where the convection phenomenon is able to be modeled by empirical correlations. The radiation process is almost a geometric problem, so its analysis will be a minor order study. The modeling of rectangular parallel fin heat sinks allows an analytical study. This study can lead to determining the parameters of a heat sink for a specific application, mainly for electronics industry. The heat transfer processes that occur in a heat sink are studied in this work. There is also proposed an algorithm for rectangular parallel fin heat sinks and the computation study of its results. These computation results are compared to a finite element program solution in order to know the error of the proposed model. Finally, is suggested an optimization application for this algorithm.
Download or read book Flow Resistance A Design Guide for Engineers written by I.E. Idelchik and published by Routledge. This book was released on 2017-08-25 with total page 486 pages. Available in PDF, EPUB and Kindle. Book excerpt: A sourcebook offering an up-to-date perspective on a variety of topics and using practical, applications-oriented data necessary for the design and evaluation of internal fluid system pressure losses. It has been prepared for the practicing engineer who understands fluid-flow fundamentals.
Download or read book Thermal Design written by H. S. Lee and published by John Wiley & Sons. This book was released on 2010-11-17 with total page 656 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thermal Design: Heat Sinks, Thermoelectrics, Heat Pipes, Compact Heat Exchangers, and Solar Cells, Second Edition, is a significantly updated new edition which now includes a chapter on thermoelectrics It covers thermal devices such as heat sinks, thermoelectric generators and coolers, heat pipes, and heat exchangers as design components in larger systems. These devices are becoming increasingly important and fundamental in thermal design across such diverse areas as microelectronic cooling, green or thermal energy conversion, and thermal control and management in space. The underlying concepts in this book cover the understanding of the physical mechanisms of the thermal devices with the essential formulas and detailed derivations, and also the design of the thermal devices in conjunction with mathematical modeling, graphical optimization, and occasionally computational-fluid-dynamic (CFD) simulation. This new edition includes more examples, problems and tutorials, and a solutions manual is available on a companion website.
Download or read book Fluid Mechanics and Fluid Power Contemporary Research written by Arun K. Saha and published by Springer. This book was released on 2016-09-20 with total page 1638 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume comprises the proceedings of the 42nd National and 5th International Conference on Fluid Mechanics and Fluid Power held at IIT Kanpur in December, 2014.The conference proceedings encapsulate the best deliberations held during the conference. The diversity of participation in the conference, from academia, industry and research laboratories reflects in the articles appearing in the volume. This contributed volume has articles from authors who have participated in the conference on thematic areas such as Fundamental Issues and Perspectives in Fluid Mechanics; Measurement Techniques and Instrumentation; Computational Fluid Dynamics; Instability, Transition and Turbulence; Turbomachinery; Multiphase Flows; Fluid‐Structure Interaction and Flow‐Induced Noise; Microfluidics; Bio‐inspired Fluid Mechanics; Internal Combustion Engines and Gas Turbines; and Specialized Topics. The contents of this volume will prove useful to researchers from industry and academia alike.
Download or read book Convective Boiling and Condensation written by John G. Collier and published by Clarendon Press. This book was released on 1994-05-19 with total page 646 pages. Available in PDF, EPUB and Kindle. Book excerpt: * Third edition of a well-known and well established text both in industry and for teaching * Fully up-to-date and includes extra problems This book is an aid to heat exchanger design written primarily for design and development engineers in the chemical process, power generation, and refrigeration industries. It provides a comprehensive reference on two-phase flows, boiling, and condensation. The text covers all the latest advances like flows over tube bundles and two-phase heat transfer regarding refrigerants and petrochemicals. Another feature of this third edition is many new problems at chapter ends to enhance its use as a teaching text for graduate and post-graduate courses on two-phase flow and heat transfer. - ;This book is written for practising engineers as a comprehensive reference on two-phase flows, boiling, and condensation. It deals with methods for estimating two-phase flow pressure drops and heat transfer rates. It is a well-known reference book in its third edition and is also used as a text for advanced university courses. Both authors write from practical experience as both are professional engineers. -
Download or read book Engineering Heat Transfer written by William S. Janna and published by CRC Press. This book was released on 2018-10-03 with total page 692 pages. Available in PDF, EPUB and Kindle. Book excerpt: Most heat transfer texts include the same material: conduction, convection, and radiation. How the material is presented, how well the author writes the explanatory and descriptive material, and the number and quality of practice problems is what makes the difference. Even more important, however, is how students receive the text. Engineering Heat Transfer, Third Edition provides a solid foundation in the principles of heat transfer, while strongly emphasizing practical applications and keeping mathematics to a minimum. New in the Third Edition: Coverage of the emerging areas of microscale, nanoscale, and biomedical heat transfer Simplification of derivations of Navier Stokes in fluid mechanics Moved boundary flow layer problems to the flow past immersed bodies chapter Revised and additional problems, revised and new examples PDF files of the Solutions Manual available on a chapter-by-chapter basis The text covers practical applications in a way that de-emphasizes mathematical techniques, but preserves physical interpretation of heat transfer fundamentals and modeling of heat transfer phenomena. For example, in the analysis of fins, actual finned cylinders were cut apart, fin dimensions were measures, and presented for analysis in example problems and in practice problems. The chapter introducing convection heat transfer describes and presents the traditional coffee pot problem practice problems. The chapter on convection heat transfer in a closed conduit gives equations to model the flow inside an internally finned duct. The end-of-chapter problems proceed from short and simple confidence builders to difficult and lengthy problems that exercise hard core problems solving ability. Now in its third edition, this text continues to fulfill the author’s original goal: to write a readable, user-friendly text that provides practical examples without overwhelming the student. Using drawings, sketches, and graphs, this textbook does just that. PDF files of the Solutions Manual are available upon qualifying course adoptions.
Download or read book Annual IEEE Semiconductor Thermal Measurement and Management Symposium written by and published by . This book was released on 1999 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Numerical Heat Transfer and Fluid Flow written by Suhas Patankar and published by CRC Press. This book was released on 2018-10-08 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on heat and mass transfer, fluid flow, chemical reaction, and other related processes that occur in engineering equipment, the natural environment, and living organisms. Using simple algebra and elementary calculus, the author develops numerical methods for predicting these processes mainly based on physical considerations. Through this approach, readers will develop a deeper understanding of the underlying physical aspects of heat transfer and fluid flow as well as improve their ability to analyze and interpret computed results.
Download or read book Heat Transfer and Fluid Flow in Minichannels and Microchannels written by Satish Kandlikar and published by Elsevier. This book was released on 2006 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt: &Quot;This book explores flow through passages with hydraulic diameters from about 1 [mu]m to 3 mm, covering the range of minichannels and microchannels. Design equations along with solved examples and practice problems are also included to serve the needs of practicing engineers and students in a graduate course."--BOOK JACKET.
Download or read book Rules of Thumb for Mechanical Engineers written by J. Edward Pope and published by Gulf Professional Publishing. This book was released on 1997 with total page 417 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fluids -- Heat transfer -- Thermodynamics -- Mechanical seals -- Pumps and compressors -- Drivers -- Gears -- Bearings -- Piping and pressure vessels -- Tribology -- Vibration -- Materials -- Stress and strain -- Fatigue -- Instrumentation -- Engineering economics.
Download or read book Next Generation Microchannel Heat Exchangers written by Michael Ohadi and published by Springer Science & Business Media. This book was released on 2012-10-16 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: In Next Generation Microchannel Heat Exchangers, the authors’ focus on the new generation highly efficient heat exchangers and presentation of novel data and technical expertise not available in the open literature. Next generation micro channels offer record high heat transfer coefficients with pressure drops much less than conventional micro channel heat exchangers. These inherent features promise fast penetration into many mew markets, including high heat flux cooling of electronics, waste heat recovery and energy efficiency enhancement applications, alternative energy systems, as well as applications in mass exchangers and chemical reactor systems. The combination of up to the minute research findings and technical know-how make this book very timely as the search for high performance heat and mass exchangers that can cut costs in materials consumption intensifies.
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.
