Download or read book Application of a Novel Biological Nanofluid in a Liquid Block Heat Sink for Cooling of an Electronic Processor Thermal Performance and Irreversibility Considerations written by and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Highlights: Cooling of an electronic processor is performed by means of a biological nanofluid. Heat transfer coefficient rises by raising either Reynolds number or concentration. By increasing Reynolds number and concentration, temperature becomes more uniform. Surface temperature reduces by augmenting either Reynolds number or concentration. Irreversibility in heat sink reduces by raising concentration and Reynolds number. Abstract: Hydrothermal characteristics and entropy generation of a biological nanofluid containing silver nanoparticles are evaluated in a liquid block heat sink for cooling of an electronic processor. The liquid block under study has 20 channels, and its bottom surface is placed on the processor. Nanoparticles synthesized through plant extract technique from green tea leaves are employed. The degree of improvement in cooling, pumping power, thermal performance and irreversibilities are examined for case of using the nanofluid instead of water. By increasing Reynolds number and particle concentration, temperature distribution becomes more uniform in processor surface and heat transfer coefficient also increases. Furthermore, the surface temperature decreases with increasing concentration and Reynolds number, such that it reduces by 2.21 °C in case of using the nanofluid with concentration of 1% instead of water at Reynolds number of 500. Moreover, maximum temperature of the processor surface decreases by increasing Reynolds number and concentration and therefore, the possibility of hot spot formation diminishes. Results show that at a constant work consumption, the nanofluid also presents better cooling compared to water. Entropy generation analysis reveals that irreversibility in the whole liquid block decreases with increasing either concentration or Reynolds number, which is a positive result based on second law of thermodynamics.
Download or read book Thermal Performance of Nanofluids in Miniature Heat Sinks with Conduits written by S. Harikrishnan and published by Springer Nature. This book was released on 2022-01-04 with total page 105 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive book focuses on the basic physical features and purpose of nanofluids and miniature heat sinks. The contents demonstrate the design modification, fabrication, experimental investigation, and various applications of miniature heat sinks. The book provides context for thermal performance of miniature heat sinks as well as summaries of experimental results correlations that reflect the current technical innovations are included. This book is a useful reference for both academia and industry alike.
Download or read book Interdisciplinary Research in Technology and Management written by Satyajit Chakrabarti and published by CRC Press. This book was released on 2021-09-14 with total page 688 pages. Available in PDF, EPUB and Kindle. Book excerpt: The conference on ‘Interdisciplinary Research in Technology and Management” was a bold experiment in deviating from the traditional approach of conferences which focus on a specific topic or theme. By attempting to bring diverse inter-related topics on a common platform, the conference has sought to answer a long felt need and give a fillip to interdisciplinary research not only within the technology domain but across domains in the management field as well. The spectrum of topics covered in the research papers is too wide to be singled out for specific mention but it is noteworthy that these papers addressed many important and relevant concerns of the day.
Download or read book 23 European Symposium on Computer Aided Process Engineering written by Mateusz Korpyś and published by Elsevier Inc. Chapters. This book was released on 2013-06-10 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this study, a commercial heat sink was employed for cooling a PC processor. Two liquids were used (i) water and (ii) copper oxide (II) nanofluids with 0.0086 and 0.0225 volume fractions. In the experiments, the heat sink was fixed to the CPU. The maximal power dissipated by the investigated processor was 115 W. The mass flow rate of the liquids was in the range of 0.009 to 0.05 kg/s and the inlet temperature was in the range of 300 to 305 K. The experimental results were used to validate the numerical model of the analyzed system. The commercial package ANSYS Fluent 13 was employed to generate a CFD heat transfer simulation. A laminar flow regime was proposed in a fin array area of the heat sink. An appropriate grid quality model was developed and validated. The obtained results showed that water was sufficient enough for CPU cooling.
Download or read book Advances in Nanofluid Heat Transfer written by Hafiz Muhammad Ali and published by Elsevier. This book was released on 2022-05-28 with total page 589 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Nanofluid Heat Transfer covers the broad definitions, brief history, preparation techniques, thermophysical properties, heat transfer characteristics, and emerging applications of hybrid nanofluids. Starting with the basics, this book advances step-by-step toward advanced topics, with mathematical models, schematic diagrams and discussions of the experimental work of leading researchers. By introducing readers to new techniques, this book helps readers resolve existing problems and implement nanofluids in innovative new applications. This book provides detailed coverage of stability and reliable measurement techniques for nanofluid properties, as well as different kinds of base fluids. Providing a clear understanding of what happens at the nanoscale, the book is written to be used by engineers in industry as well as researchers and graduate students. Covers new applications of nanofluids, along with key challenges encountered in the commercialization of this technology Highlights new nanofluid properties and associated numerical modeling methods Addresses the very latest topics in nanofluids sciences, such as ionic nanofluids
Download or read book Heat Transfer written by A Kanni Raj and published by . This book was released on 2018-04-13 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt: The research monograph - HEAT-TRANSFER : Electronics Cooling with Nanofluids Application - is a concise book written exclusively based on my post - doctoral research. It contains chapters on - heat transfer and component cooling, nanoparticles and nanofluids preparation, heat transfer and pressure drop characteristics of various nanofluids in a thin channelled heat sink and also in an electronic heat sink fitted with dynamic mixers, and contains appendices on - calibration curves and uncertainty analysis, test data of thin channelled heat sink and heat sink fitted with dynamic mixer.his book is backed by huge number of references and each reference bears its citation inside various chapters. This book is useful to readers interested in experimenting heat transfer, ie, BE, BTech, ME, MTech, MS, PhD and ScD in Mechanical Engineering and Thermal Engineering.
Download or read book Thermal Characteristics and Convection in Nanofluids written by Aditya Kumar and published by Springer Nature. This book was released on 2021-01-04 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers synthesis, characterization, stability, heat transfer and applications of nanofluids. It includes different types of nanofluids, their preparation methods as well as its effects on the stability and thermophysical properties of nanofluids. It provides a discussion on the mechanism behind the change in the thermal properties of nanofluids and heat transfer behaviour. It presents the latest information and discussion on the preparation and advanced characterization of nanofluids. It also consists of stability analysis of nanofluids and discussion on why it is essential for the industrial application. The book provides a discussion on thermal boundary layer properties in convection. Future directions for heat transfer applications to make the production and application of nanofluids at industrial level are also discussed.
Download or read book Embedded Cooling Of Electronic Devices Conduction Evaporation And Single And Two phase Convection written by Madhusudan Iyengar and published by World Scientific. This book was released on 2024-01-10 with total page 479 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a comprehensive guide on emerging cooling technologies for processors in microelectronics. It covers various topics such as chip-embedded two-phase cooling, monolithic microfluidic cooling, numerical modeling, and advances in materials engineering for conduction-limited direct contact cooling, with a goal to remedy high heat flux issues.The book also discusses the co-design of thermal and electromagnetic properties for the development of light and ultra-high efficiency electric motors. It provides an in-depth analysis of the scaling limits, challenges, and opportunities in embedded cooling, including high power RF amplifiers and self-emissive and liquid crystal displays. Its analysis of emerging cooling technologies provides a roadmap for the future of cooling technology in microelectronics.This book is a good starting point for the electrical and thermal engineers, as well as MS and PhD students, interested in understanding and collaboratively tackling the complex and multidisciplinary field of microelectronics device (embedded) cooling. A basic knowledge of heat conduction and convection is required.
Download or read book Nanofluid Heat and Mass Transfer in Engineering Problems written by Mohsen Sheikholeslami Kandelousi and published by BoD – Books on Demand. This book was released on 2017-03-15 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the present book, nanofluid heat and mass transfer in engineering problems are investigated. The use of additives in the base fluid like water or ethylene glycol is one of the techniques applied to augment heat transfer. Newly, innovative nanometer-sized particles have been dispersed in the base fluid in heat transfer fluids. The fluids containing the solid nanometer-sized particle dispersion are called "nanofluids." At first, nanofluid heat and mass transfer over a stretching sheet are provided with various boundary conditions. Problems faced for simulating nanofluids are reported. Also, thermophysical properties of various nanofluids are presented. Nanofluid flow and heat transfer in the presence of magnetic field are investigated. Furthermore, applications for electrical and biomedical engineering are provided. Besides, applications of nanofluid in internal combustion engine are provided.
Download or read book Heat Transport in Nanofluids and Biological Tissues written by Jing Fan and published by Open Dissertation Press. This book was released on 2017-01-26 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation, "Heat Transport in Nanofluids and Biological Tissues" by Jing, Fan, 范菁, was obtained from The University of Hong Kong (Pokfulam, Hong Kong) and is being sold pursuant to Creative Commons: Attribution 3.0 Hong Kong License. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation. All rights not granted by the above license are retained by the author. Abstract: The present work contains two parts: nanofluids and bioheat transport, both involving multiscales and sharing some common features. The former centers on addressing the three key issues of nanofluids research: (i) what is the macroscale manifestation of microscale physics, (ii) how to optimize microscale physics for the optimal system performance, and (iii) how to effectively manipulate at microscale. The latter develops an analytical theory of bioheat transport that includes: (i) identification and contrast of the two approaches for developing macroscale bioheat models: the mixture-theory (scaling-down) and porous-media (scaling-up) approaches, (ii) rigorous development of first-principle bioheat model with the porous-media approach, (iii) solution-structure theorems of dual-phase-lagging (DPL) bioheat equations, (iv) practical case studies of bioheat transport in skin tissues and during magnetic hyperthermia, and (v) rich effects of interfacial convective heat transfer, blood velocity, blood perfusion and metabolic reaction on blood and tissue macroscale temperature fields. Nanofluids, fluid suspensions of nanostructures, find applications in various fields due to their unique thermal, electronic, magnetic, wetting and optical properties that can be obtained via engineering nanostructures. The present numerical simulation of structure-property correlation for fourteen types of two/three-dimensional nanofluids signifies the importance of nanostructure's morphology in determining nanofluids' thermal conductivity. The success of developing high-conductive nanofluids thus depends very much on our understanding and manipulation of the morphology. Nanofluids with conductivity of upper Hashin-Shtrikman bounds can be obtained by manipulating structures into an interconnected configuration that disperses the base fluid and thus significantly enhancing the particle-fluid interfacial energy transport. The numerical simulation also identifies the particle's radius of gyration and non-dimensional particle-fluid interfacial area as two characteristic parameters for the effect of particles' geometrical structures on the effective thermal conductivity. Predictive models are developed as well for the thermal conductivity of typical nanofluids. A constructal approach is developed to find the constructal microscopic physics of nanofluids for the optimal system performance. The approach is applied to design nanofluids with any branching level of tree-shaped microstructures for cooling a circular disc with uniform heat generation and central heat sink. The constructal configuration and system thermal resistance have some elegant universal features for both cases of specified aspect ratio of the periphery sectors and given the total number of slabs in the periphery sectors. The numerical simulation on the bubble formation in T-junction microchannels shows: (i) the mixing enhancement inside liquid slugs between microfluidic bubbles, (ii) the preference of T-junctions with small channel width ratio for either producing smaller microfluidic bubbles at a faster speed or enhancing mixing within the liquid phase, and (iii) the existence of a critical value of nondimens
Download or read book Nanofluid As a Coolant for Electronic Devices written by Ali Ijam and published by LAP Lambert Academic Publishing. This book was released on 2012-08 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is discussing about the usage of nanofluid as a coolant for electronic devices. Nanofluids are the suspension of solid nanoparticles in a base fluid. Nanofluids are expected to be a promising coolant candidate for thermal management system of next generation high heat dissipation electronic systems. In this research, thermal conductivity, heat transfer and pumping power for a nanofluid turbulent flow in copper minichannel heat sink is analyzed. Nanofluids with a different volume fraction and with 2 m/s and 6m/s inlet velocities are used.A minichannel heat sink with the bottom analyzed for SiC water nanofluid and TiO2 water nanofluid turbulent flow as a coolant through hydraulics diameters and heat flux boundary condition are assumed.
Download or read book Heat Transfer Enhancement with Nanofluids written by Vincenzo Bianco and published by CRC Press. This book was released on 2017-07-26 with total page 481 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanofluids are gaining the attention of scientists and researchers around the world. This new category of heat transfer medium improves the thermal conductivity of fluid by suspending small solid particles within it and offers the possibility of increased heat transfer in a variety of applications. Bringing together expert contributions from across the globe, Heat Transfer Enhancement with Nanofluids presents a complete understanding of the application of nanofluids in a range of fields and explains the main techniques used in the analysis of nanofuids flow and heat transfer. Providing a rigorous framework to help readers develop devices employing nanofluids, the book addresses basic topics that include the analysis and measurements of thermophysical properties, convection, and heat exchanger performance. It explores the issues of convective instabilities, nanofluids in porous media, and entropy generation in nanofluids. The book also contains the latest advancements, innovations, methodologies, and research on the subject. Presented in 16 chapters, the text: Discusses the possible mechanisms of thermal conduction enhancement Reviews the results of a theoretical analysis determining the anomalous enhancement of heat transfer in nanofluid flow Assesses different approaches modeling the thermal conductivity enhancement of nanofluids Focuses on experimental methodologies used to determine the thermophysical properties of nanofluids Analyzes forced convection heat transfer in nanofluids in both laminar and turbulent convection Highlights the application of nanofluids in heat exchangers and microchannels Discusses the utilization of nanofluids in porous media Introduces the boiling of nanofluids Treats pool and flow boiling by analyzing the effect of nanoparticles on these complex phenomena Indicates future research directions to further develop this area of knowledge, and more Intended as a reference for researchers and engineers working in the field, Heat Transfer Enhancement with Nanofluids presents advanced topics that detail the strengths, weaknesses, and potential future developments in nanofluids heat transfer.
Download or read book Hybrid Nanofluids written by Zafar Said and published by Elsevier. This book was released on 2022-01-28 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hybrid Nanofluids: Preparation, Characterization and Applications presents the history of hybrid nanofluids, preparation techniques, thermoelectrical properties, rheological behaviors, optical properties, theoretical modeling and correlations, and the effect of all these factors on potential applications, such as solar energy, electronics cooling, heat exchangers, machining, and refrigeration. Future challenges and future work scope have also been included. The information from this book enables readers to discover novel techniques, resolve existing research limitations, and create novel hybrid nanofluids which can be implemented for heat transfer applications. Describes the characterization, thermophysical and electrical properties of nanofluids Assesses parameter selection and property measurement techniques for the calibration of thermal performance Provides information on theoretical models and correlations for predicting hybrid nanofluids properties from experimental properties
Download or read book Nanofluids written by Sarit K. Das and published by John Wiley & Sons. This book was released on 2007-12-04 with total page 485 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduction to nanofluids--their properties, synthesis, characterization, and applications Nanofluids are attracting a great deal of interest with their enormous potential to provide enhanced performance properties, particularly with respect to heat transfer. In response, this text takes you on a complete journey into the science and technology of nanofluids. The authors cover both the chemical and physical methods for synthesizing nanofluids, explaining the techniques for creating a stable suspension of nanoparticles. You get an overview of the existing models and experimental techniques used in studying nanofluids, alongside discussions of the challenges and problems associated with some of these models. Next, the authors set forth and explain the heat transfer applications of nanofluids, including microelectronics, fuel cells, and hybrid-powered engines. You also get an introduction to possible future applications in large-scale cooling and biomedicine. This book is the work of leading pioneers in the field, one of whom holds the first U.S. patent for nanofluids. They have combined their own first-hand knowledge with a thorough review of theliterature. Among the key topics are: * Synthesis of nanofluids, including dispersion techniques and characterization methods * Thermal conductivity and thermo-physical properties * Theoretical models and experimental techniques * Heat transfer applications in microelectronics, fuel cells, and vehicle engines This text is written for researchers in any branch of science and technology, without any prerequisite.It therefore includes some basic information describing conduction, convection, and boiling of nanofluids for those readers who may not have adequate background in these areas. Regardless of your background, you'll learn to develop nanofluids not only as coolants, but also for a host ofnew applications on the horizon.
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 Biomedical Applications of Nanotechnology written by Vinod Labhasetwar and published by John Wiley & Sons. This book was released on 2007-09-28 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: An overview of nanotechnology and its potential The field of nanotechnology is undergoing rapid developments on many fronts. This reference provides a comprehensive review of various nanotechnologies with a view to their biomedical applications. With chapters contributed by distinguished scientists from diverse disciplines, Biomedical Applications of Nanotechnology : Reviews recent advances in the designing of various nanotechnologies based on nucleic acids, polymers, biomaterials, and metals Discusses biomedical nanotechnology in areas such as drug and gene delivery Covers advanced aspects of imaging and diagnostics Includes a chapter on the issue of nanotoxicology Complete with figures and tables, this is a practical, hands-on reference book for researchers in pharmaceutical and biotech industries, biomedical engineers, pharmaceutical scientists, pharmacologists, and materials scientists as well as for the policymakers who need to understand the potential of nanotechnology. It is also an excellent resource book for graduate-level students in pharmaceutical sciences, biomedical engineering, and other fields in which nanotechnology is playing an increasingly important role.
Download or read book Heating Ventilating and Air Conditioning written by Faye C. McQuiston and published by John Wiley & Sons. This book was released on 2004-08-06 with total page 648 pages. Available in PDF, EPUB and Kindle. Book excerpt: HEATING, VENTILATING, AND AIR CONDITIONING Completely revised with the latest HVAC design practices! Based on the most recent standards from ASHRAE, this Sixth Edition provides complete and up-to-date coverage of all aspects of heating, ventilation, and air conditioning. You’ll find the latest load calculation procedures, indoor air quality procedures, and issues related to ozone depletion. Throughout the text, numerous worked examples clearly show you how to apply the concepts in realistic scenarios. In addition, several computer programs (several new to this edition) help you understand key concepts and allow you to simulate various scenarios, such as psychometrics and air quality, load calculations, piping system design, duct system design, and cooling coil simulation. Additionally, the load calculation program has been revised and updated. These computer programs are available at the book’s website: www.wiley.com/college/mcquiston Key Features of the Sixth Edition Additional new worked examples in the text and on the accompanying software. Chapters 6-9 have been extensively revised for clarity and ease of use. Chapter 8, The Cooling Load, now includes two approaches: the heat balance method, as recommended by ASHRAE, and the simpler RTS method. Both approaches include computer applications to aid in calculations. Provides complete, authoritative treatment of all aspects of HVAC, based on current ASHRAE standards. Numerous worked examples and homework problems provide realistic scenarios to apply concepts.
