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 Phase Change Material Based Heat Sinks written by Srikanth Rangarajan and published by CRC Press. This book was released on 2019-11-20 with total page 223 pages. Available in PDF, EPUB and Kindle. Book excerpt: Phase-change Material based heat sinks and associated optimization remains a topic of great interest, as evident from the increasing number of citations and new applications and miniaturization. Often the multi objective perspective of such heat sinks is ignored. This book introduces the readers to the PCM based heat sinks and Multi objective optimization. The authors have also included interesting in house experimental results on the "Rotating heat sinks" which is a first of a kind work. Useful to budding thermal researchers and practicing engineers in the field, this book is also a great start for students to understand the cooling applications in electronics and an asset to every library in a technical university. Since this book not only gives a critical review of the state of the art but also presents the authors' own results. The book will encourage, motivate and let the reader consider pursuing a research career in electronic cooling technologies.
Download or read book Modeling of Thermal Performance of Nanofluids with PCM Particles written by Awad Alquaity and published by LAP Lambert Academic Publishing. This book was released on 2015-08-25 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: Development of next generation microchips and other high heat generating applications is constrained by the issue of effective heat removal. One of the most promising methods to enhance heat transfer is to introduce nano-sized phase change material (PCM) particles in the heat transfer fluid. In this work, commercial Computational Fluid Dynamics (CFD) software ANSYS Fluent was employed for modeling the thermal performance of liquid flow with nanosized PCM particles in a microchannel. The research carried out here resulted in a thorough quantitative assessment of heat storage capacity enhancement which can be achieved through the use of nanosized phase change material particles. The results showed tremendous potential for using nanosized phase change materials in liquid heat sinks for effective heat removal in high heat generating applications.
Download or read book Thermal Performance and Operational Attributes of the Startup Characteristics of Flat shaped Heat Pipes Using Nanofluids written by Karim Alizad and published by . This book was released on 2011 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Computational Analysis of Nanofluid Flow in Microchannels with Applications to Micro heat Sinks and Bio MEMS written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanofluids, i.e., dilute suspensions of nanoparticles in liquids, may exhibit quite different thermal properties than the pure carrier fluids. For example, numerous experiments with nanofluids have shown that the effective thermal conductivities for such mixtures are measurably elevated, and hence beneficial applications to (micro-scale) cooling are obvious. A very different application of nanofluids could be in modern medicine, where for example, nanodrugs are mixed in microchannels for controlled delivery with bio-MEMS. In general, to optimize nanofluid flow in microchannels, best possible conduit geometries, mixing units, and device operational conditions have to be found for specific applications. Specifically, a suitable model of common nanofluids, performance as well as cost effective mixers, and entropy minimizing channel designs are the prerequisites for achieving these project objectives. Two effective thermal conductivity models for nanofluids were compared in detail, where the new KKL (Koo-Kleinstreuer-Li) model, based on Brownian-motion induced micro-mixing, achieved good agreements with the currently available experimental data sets. The thermal performance of nanofluid flow in a trapezoidal microchannel was analyzed using pure water as well as a nanofluid, i.e., CuO-water, with volume fractions of 1% and 4% CuO-particles with . It was found that nanofluids do measurably enhance the thermal performance of microchannel mixture flow with a small increase in pumping power. Specifically, the thermal performance increases with volume fraction; but, the extra pressure drop, or pumping power, will somewhat decrease the beneficial effects. Microchannel heat sinks with nanofluids are expected to be good candidates for the next generation of cooling devices. Microcooling device design aspects in light of minimization of entropy generation were investigated numerically. The influence of the Reynolds number (inlet velocity), fluid inlet temperature, channel geometr.
Download or read book Nanofluids and Their Engineering Applications written by K.R.V. Subramanian and published by CRC Press. This book was released on 2019-06-18 with total page 498 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanofluids are solid-liquid composite material consisting of solid nanoparticles suspended in liquid with enhanced thermal properties. This book introduces basic fluid mechanics, conduction and convection in fluids, along with nanomaterials for nanofluids, property characterization, and outline applications of nanofluids in solar technology, machining and other special applications. Recent experiments on nanofluids have indicated significant increase in thermal conductivity compared with liquids without nanoparticles or larger particles, strong temperature dependence of thermal conductivity, and significant increase in critical heat flux in boiling heat transfer, all of which are covered in the book. Key Features Exclusive title focusing on niche engineering applications of nanofluids Contains high technical content especially in the areas of magnetic nanofluids and dilute oxide based nanofluids Feature examples from research applications such as solar technology and heat pipes Addresses heat transfer and thermodynamic features such as efficiency and work with mathematical rigor Focused in content with precise technical definitions and treatment
Download or read book Thermal Transport Characteristics of Nanofluids and Phase Change Materials written by S. Harikrishnan and published by CRC Press. This book was released on 2022-11 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This book provides detailed information related to nanofluids, synthesis and preparation, morphologies of nanoparticles, selection of base fluids, thermophysical properties of nanofluids, and benefits of micro and mini channels. Advantages of various conduits, improvement of heat transfer performances of phase change materials (PCMs) and base PCMs for various applications is discussed as well. Crucial difficulties like stability, aggregation, and clogging of nanoparticles are detailed including factors like size, shape, motion of nanoparticles that influence the heat transfer performance of nanofluids. Challenges, applications, and scope of the future works in the subject area is included"--
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 Transport Characteristics of Nanofluids and Phase Change Materials written by Santhanam Harikrishnan and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This book provides detailed information related to nanofluids, synthesis and preparation, morphologies of nanoparticles, selection of base fluids, thermophysical properties of nanofluids, and benefits of micro and mini channels. Advantages of various conduits, improvement of heat transfer performances of phase change materials (PCMs) and base PCMs for various applications is discussed as well. Crucial difficulties like stability, aggregation, and clogging of nanoparticles are detailed including factors like size, shape, motion of nanoparticles that influence the heat transfer performance of nanofluids. Challenges, applications, and scope of the future works in the subject area is included"--
Download or read book Nanofluids and Their Engineering Applications written by K. R. V. Subramanian and published by CRC Press. This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanofluids are solid-liquid composite material consisting of solid nanoparticles suspended in liquid with enhanced thermal properties. This book introduces basic fluid mechanics, conduction and convection in fluids, along with nanomaterials for nanofluids, property characterization, and outline applications of nanofluids in solar technology, machining and other special applications. Recent experiments on nanofluids have indicated significant increase in thermal conductivity compared with liquids without nanoparticles or larger particles, strong temperature dependence of thermal conductivity, and significant increase in critical heat flux in boiling heat transfer, all of which are covered in the book. Key Features Exclusive title focusing on niche engineering applications of nanofluids Contains high technical content especially in the areas of magnetic nanofluids and dilute oxide based nanofluids Feature examples from research applications such as solar technology and heat pipes Addresses heat transfer and thermodynamic features such as efficiency and work with mathematical rigor Focused in content with precise technical definitions and treatment
Download or read book Experimental Investigation for Sequential Triangular Double layered Microchannel Heat Sink Using Nanofluids written by Islam M.F. Seder and published by . This book was released on 2015 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt: The heat generation in the electronic chips and microprossors needs a special and effective cooling system. Microchannel heat sink (MCHS), that offers a high heat transfer coefficient, is used to remove this heat where high thermal-conductive fluids such as water, oil and Nanofluids are employed rather than the limited removal heat capabilities of air heat sink. As it is well-known that configuration of MCHS has great impact on overall thermal performances; this study fabricated and tested innovative double-layered MCHS with triangular and rectangular shapes with using nanofluid as a coolant. A series of experimental runs for different channel dimensions and nanopartilce concentrations have been done. The result shows that double-layered MCHS outperforms traditional single-layer MCHS in thermal and hydrodynamic performances. Optimized sequential triangular double-layered MCHS provides a 27.4 % reduction in wall temperature comparing with initial guess and has better temperature uniformity across the channel length with less than 2°C. Sequential triangular shape also provides 16.6 % less total thermal resistance over rectangular shape at low pumping power. Enlarging the pumping power changes the location of the maximum base temperature to become near the inlet side of channel. Pressure drop observation shows no significant differences between triangular and rectangular shapes. Increasing the nanoparticle volume concentration Ø in the based fluid (Distill Water) causes a better thermal stability for both Al2O3-H2O and SiO2-H2O nanolfuids than pure water. 0.9 Ø Al2O3-H2O nanofluid experiences the best performances for the base thermal stability since the temperature different across the channel is 1.6 °C and the lowest thermal resistance is 0.13 °C/W.m2. This work suggests that one can adapt larger number of channel and smaller fin thickness to have less thermal resistance rather than only increasing the pumping power.
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 Oscillating Heat Pipes written by Hongbin Ma and published by Springer. This book was released on 2015-05-22 with total page 441 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the fundamental fluid flow and heat transfer principles occurring in oscillating heat pipes and also provides updated developments and recent innovations in research and applications of heat pipes. Starting with fundamental presentation of heat pipes, the focus is on oscillating motions and its heat transfer enhancement in a two-phase heat transfer system. The book covers thermodynamic analysis, interfacial phenomenon, thin film evaporation, theoretical models of oscillating motion and heat transfer of single phase and two-phase flows, primary factors affecting oscillating motions and heat transfer, neutron imaging study of oscillating motions in an oscillating heat pipes, and nanofluid’s effect on the heat transfer performance in oscillating heat pipes. The importance of thermally-excited oscillating motion combined with phase change heat transfer to a wide variety of applications is emphasized. This book is an essential resource and learning tool for senior undergraduate, graduate students, practicing engineers, researchers, and scientists working in the area of heat pipes. This book also · Includes detailed descriptions on how an oscillating heat pipe is fabricated, tested, and utilized · Covers fundamentals of oscillating flow and heat transfer in an oscillating heat pipe · Provides general presentation of conventional heat pipes
Download or read book Advances in Heat Transfer Enhancement written by Sujoy Kumar Saha and published by Springer. This book was released on 2016-04-23 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Brief addresses the phenomena of heat transfer enhancement. A companion edition in the SpringerBrief Subseries on Thermal Engineering and Applied Science to three other monographs including “Critical Heat Flux in Flow Boiling in Microchannels,” this volume is idea for professionals, researchers, and graduate students concerned with electronic cooling.
Download or read book Munson s Fluid Mechanics written by Philip M. Gerhart and published by . This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Munson's FLUID MECHANICS Munson's Fluid Mechanics, offers comprehensive topical coverage, with varied examples and problems, application of visual component of fluid mechanics, and strong focus on effective learning. The text enables the gradual development of confidence in problem solving. Each important concept is introduced in easy-to-understand terms before more complicated examples are discussed.
Download or read book Handbook of Physics written by Walter Benenson and published by Springer Science & Business Media. This book was released on 2006-01-13 with total page 1183 pages. Available in PDF, EPUB and Kindle. Book excerpt: Handbook of Physics is a veritable toolbox for rapid access to a wealth of physics information for everyday use in problem solving, homework, and examinations. This complete reference includes not only the fundamental formulas of physics but also experimental methods used in practice.
Download or read book Engineering Applications of Nanotechnology written by Viswanatha Sharma Korada and published by Springer. This book was released on 2017-01-09 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on the use of nanotechnology in several fields of engineering. Among others, the reader will find valuable information as to how nanotechnology can aid in extending the life of component materials exposed to corrosive atmospheres, in thermal fluid energy conversion processes, anti-reflection coatings on photovoltaic cells to yield enhanced output from solar cells, in connection with friction and wear reduction in automobiles, and buoyancy suppression in free convective heat transfer. Moreover, this unique resource presents the latest research on nanoscale transport phenomena and concludes with a look at likely future trends.
