Characterization of Heat Transfer Coefficient at Micro/nano Scale and the Effect of Heated Zone Size - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Characterization of Heat Transfer Coefficient at Micro/nano Scale and the Effect of Heated Zone Size write by Raghu Pulavarthy. This book was released on 2015. Characterization of Heat Transfer Coefficient at Micro/nano Scale and the Effect of Heated Zone Size available in PDF, EPUB and Kindle. Heat transfer mechanism from hot solids to surrounding air is crucial in thermal systems. Thermal management of devices at micro/nano length scales is very important for their reliability as they continue to shrink in size. It is agreed widely that the heat transfer coefficient increases at smaller length scales. This work presents an experimental technique to characterize the heat transfer from micro and nano scale structures using infrared microscopy. The heat transfer coefficient is found to be two orders of magnitude higher than the value at bulk length scales. It also shows an inverse relationship with temperature of the solid which suggests that the solid to air conduction is the dominating mechanism of heat dissipation at small length scales. An empirical relationship is also presented that depends on ratio of surface area to cross-sectional area, temperature differential in the heated solid and its surroundings. The heat transfer coefficient in conjunction with the temperature map from the infrared microscope can be used to measure the thermal conductivity of specimen using a heat transfer model based on micro fin geometry. It is assumed that this size effect on the heat transfer coefficient is due to the size of specimen. An experiment is presented to show the effect of the predominance of the heater size on the heat transfer coefficient. For micro-heaters, the heat transfer coefficient is measured to about 3200 W/m2 K. This value drops to about 110 W/m2 K for a millimeter scale heater and to 10 W/m2 K for a macroscopic heater; all for a nanoscale thin film specimen.
Microscale and Nanoscale Heat Transfer
Microscale and Nanoscale Heat Transfer - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Microscale and Nanoscale Heat Transfer write by C.B. Sobhan. This book was released on 2008-06-12. Microscale and Nanoscale Heat Transfer available in PDF, EPUB and Kindle. Through analyses, experimental results, and worked-out numerical examples, Microscale and Nanoscale Heat Transfer: Fundamentals and Engineering Applications explores the methods and observations of thermophysical phenomena in size-affected domains. Compiling the most relevant findings from the literature, along with results from their own re
Microscale and Nanoscale Heat Transfer
Microscale and Nanoscale Heat Transfer - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Microscale and Nanoscale Heat Transfer write by Mourad Rebay. This book was released on 2016-01-06. Microscale and Nanoscale Heat Transfer available in PDF, EPUB and Kindle. Microscale and Nanoscale Heat Transfer: Analysis, Design, and Applications features contributions from prominent researchers in the field of micro- and nanoscale heat transfer and associated technologies and offers a complete understanding of thermal transport in nano-materials and devices. Nanofluids can be used as working fluids in thermal system
Micro and Nano Thermal Transport
Micro and Nano Thermal Transport - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Micro and Nano Thermal Transport write by Lin Qiu. This book was released on 2022-02-09. Micro and Nano Thermal Transport available in PDF, EPUB and Kindle. Micro and Nano Thermal Transport Research: Characterization, Measurement and Mechanism is a complete and reliable reference on thermal measurement methods and mechanisms of micro and nanoscale materials. The book has a strong focus on applications and simulation, providing clear guidance on how to measure thermal properties in a systematic way. Sections cover the fundamentals of thermal properties before introducing tools to help readers identify and analyze thermal characteristics of these materials. The thermal transport properties are then further explored by means of simulation which reflect the internal mechanisms used to generate such thermal properties. Readers will gain a clear understanding of thermophysical measurement methods and the representative thermal transport characteristics of micro/nanoscale materials with different structures and are guided through a decision-making process to choose the most effective method to master thermal analysis. The book is particularly suitable for those engaged in the design and development of thermal property measurement instruments, as well as researchers of thermal transport at the micro and nanoscale. Includes a variety of measurement methods and thermal transport characteristics of micro and nanoscale materials under different structures Guides the reader through the decision-making process to ensure the best thermal analysis method is selected for their setting Contains experiments and simulations throughout that help apply understanding to practice
Nano/microscale Heat Transfer
Nano/microscale Heat Transfer - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Nano/microscale Heat Transfer write by Zhuomin M. Zhang. This book was released on 2020. Nano/microscale Heat Transfer available in PDF, EPUB and Kindle. This substantially updated and augmented second edition adds over 200 pages of text covering and an array of newer developments in nanoscale thermal transport. In Nano/Microscale Heat Transfer, 2nd edition, Dr. Zhang expands his classroom-proven text to incorporate thermal conductivity spectroscopy, time-domain and frequency-domain thermoreflectance techniques, quantum size effect on specific heat, coherent phonon, minimum thermal conductivity, interface thermal conductance, thermal interface materials, 2D sheet materials and their unique thermal properties, soft materials, first-principles simulation, hyperbolic metamaterials, magnetic polaritons, and new near-field radiation experiments and numerical simulations. Informed by over 12 years use, the authors research experience, and feedback from teaching faculty, the book has been reorganized in many sections and enriched with more examples and homework problems. Solutions for selected problems are also available to qualified faculty via a password-protected website. • Substantially updates and augments the widely adopted original edition, adding over 200 pages and many new illustrations; • Incorporates student and faculty feedback from a decade of classroom use; • Elucidates concepts explained with many examples and illustrations; • Supports student application of theory with 300 homework problems; • Maximizes reader understanding of micro/nanoscale thermophysical properties and processes and how to apply them to thermal science and engineering; • Features MATLAB codes for working with size and temperature effects on thermal conductivity, specific heat of nanostructures, thin-film optics, RCWA, and near-field radiation.
