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Heat Transfer and Fluid Flow in Minichannels and Microchannels - Satish Kandlikar

Heat Transfer and Fluid Flow in Minichannels and Microchannels

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Heat exchangers with minichannel and microchannel flow passages are becoming increasingly popular because of their ability to remove large heat fluxes under single-phase and two-phase applications. This book serves as a sourcebook for those individuals involved in the design processes of microchannel flow passages in a heat exchanger.

This book manages to present its findings in a manner that is directly useful to a designer, while a researcher is able to use the information in developing new models, or in identifying research needs.

Each chapter is accompanied by a 'real life' case study.

First book published solely dealing with heat and fluid flow in minichannels and microchannels.

Cover -- Heat Transfer and Fluid Flow in Minichannels and Microchannels -- Contents -- About the Authors -- Preface -- Nomenclature -- Greek Symbols -- Subscripts -- Superscripts -- Operators -- Chapter 1. Introduction -- 1.1. Need for smaller flow passages -- 1.2. Flow channel classification -- 1.3. Basic heat transfer and pressure drop considerations -- 1.4. Special demands of microscale biological applications -- 1.5. Summary -- 1.6. Practice problems -- References -- Chapter 2. Single-phase gas flow in microchannels -- 2.1. Rarefaction and wall effects in microflows -- 2.1.1. Gas at the molecular level -- 2.1.2. Continuum assumption and thermodynamic equilibrium -- 2.1.3. Rarefaction and Knudsen analogy -- 2.1.4. Wall effects -- 2.2. Gas flow regimes in microchannels -- 2.2.1. Ideal gas model -- 2.2.2. Continuum flow regime -- 2.2.3. Slip flow regime -- 2.2.4. Transition flow and free molecular flow -- 2.3. Pressure-driven steady slip flows in microchannels -- 2.3.1. Plane flow between parallel plates -- 2.3.2. Gas flow in circular microtubes -- 2.3.3. Gas flow in annular ducts -- 2.3.4. Gas Flow in rectangular microchannels -- 2.3.5. Experimental data -- 2.3.6. Entrance effects -- 2.4. Pulsed gas flows in microchannels -- 2.5. Thermally driven gas microflows and vacuum generation -- 2.5.1. Transpiration pumping -- 2.5.2. Accommodation pumping -- 2.6. Heat transfer in microchannels -- 2.6.1. Heat transfer in a plane microchannel -- 2.6.2. Heat transfer in a circular microtube -- 2.6.3. Heat transfer in a rectangular microchannel -- 2.7. Future research needs -- 2.8. Solved examples -- 2.9. Problems -- References -- Chapter 3. Single-phase liquid flow in minichannels and microchannels -- 3.1. Introduction -- 3.1.1. Fundamental issues in liquid flow at microscale -- 3.1.2. Need for smaller flow passages -- 3.2. Pressure drop in single-phase liquid flow -- 3.2.1. Basic pressure drop relations -- 3.2.2. Fully developed laminar flow -- 3.2.3. Developing laminar flow -- 3.2.4. Fully developed and developing turbulent flow -- 3.3. Total pressure drop in a microchannel heat exchanger -- 3.3.1. Friction factor -- 3.3.2. Laminar-to-turbulent transition -- 3.4. Roughness effects -- 3.4.1. Roughness representation -- 3.4.2. Roughness effect on friction factor -- 3.4.3. Roughness effect on the laminar-to-turbulent flow transition -- 3.4.4. Developing flow in rough tubes -- 3.5. Heat transfer in microchannels -- 3.5.1. Fully developed laminar flow -- 3.5.2. Thermally developing flow -- 3.5.3. Agreement between theory and available experimental data on laminar flow heat transfer --tidtid63.

ISBN: 9780080456188
ISBN-10: 9780080983516
Format: PDF
Language: English
Published: 18th November 2005