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Heat transfer

About: Heat transfer is a research topic. Over the lifetime, 181795 publications have been published within this topic receiving 2923586 citations. The topic is also known as: heat exchange.


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Book
01 Jan 2007
TL;DR: In this article, the SI System of Basic Units (SI-BUs) is used to describe transport processes and separation processes in a variety of systems, such as MANETs, Pumps and Gas-Moving Equipment.
Abstract: Preface. I. TRANSPORT PROCESSES: MOMENTUM, HEAT, AND MASS. 1. Introduction to Engineering Principles and Units. Classification of Transport Processes and Separation Processes (Unit Operations). SI System of Basic Units Used in This Text and Other Systems. Methods of Expressing Temperatures and Compositions. Gas Laws and Vapor Pressure. Conservation of Mass and Material Balances. Energy and Heat Units. Conservation of Energy and Heat Balances. Numerical Methods for Integration. 2. Principles of Momentum Transfer and Overall Balances. Introduction. Fluid Statics. General Molecular Transport Equation for Momentum, Heat, and Mass Transfer. Viscosity of Fluids. Types of Fluid Flow and Reynolds Number. Overall Mass Balance and Continuity Equation. Overall Energy Balance. Overall Momentum Balance. Shell Momentum Balance and Velocity Profile in Laminar Flow. Design Equations for Laminar and Turbulent Flow in Pipes. Compressible Flow of Gases. 3. Principles of Momentum Transfer and Applications. Flow Past Immersed Objects and Packed and Fluidized Beds. Measurement of Flow of Fluids. Pumps and Gas-Moving Equipment. Agitation and Mixing of Fluids and Power Requirements. Non-Newtonian Fluids. Differential Equations of Continuity. Differential Equations of Momentum Transfer or Motion. Use of Differential Equations of Continuity and Motion. Other Methods for Solution of Differential Equations of Motion. Boundary-Layer Flow and Turbulence. Dimensional Analysis in Momentum Transfer. 4. Principles of Steady-State Heat Transfer. Introduction and Mechanisms of Heat Transfer. Conduction Heat Transfer. Conduction Through Solids in Series. Steady-State Conduction and Shape Factors. Forced Convection Heat Transfer Inside Pipes. Heat Transfer Outside Various Geometries in Forced Convection. Natural Convection Heat Transfer. Boiling and Condensation. Heat Exchangers. Introduction to Radiation Heat Transfer. Advanced Radiation Heat-Transfer Principles. Heat Transfer of Non-Newtonian Fluids. Special Heat-Transfer Coefficients. Dimensional Analysis in Heat Transfer. Numerical Methods for Steady-State Conduction in Two Dimensions. 5. Principles of Unsteady-State Heat Transfer. Derivation of Basic Equation. Simplified Case for Systems with Negligible Internal Resistance. Unsteady-State Heat Conduction in Various Geometries. Numerical Finite-Difference Methods for Unsteady-State Conduction. Chilling and Freezing of Food and Biological Materials. Differential Equation of Energy Change. Boundary-Layer Flow and Turbulence in Heat Transfer. 6. Principles of Mass Transfer. Introduction to Mass Transfer and Diffusion. Molecular Diffusion in Gases. Molecular Diffusion in Liquids Molecular Diffusion in Biological Solutions and Gels. Molecular Diffusion in Solids. Numerical Methods for Steady-State Molecular Diffusion in Two Dimensions. 7. Principles of Unsteady-State and Convective Mass Transfer. Unsteady-State Diffusion. Convective Mass-Transfer Coefficients. Mass-Transfer Coefficients for Various Geometries. Mass Transfer to Suspensions of Small Particles. Molecular Diffusion Plus Convection and Chemical Reaction. Diffusion of Gases in Porous Solids and Capillaries. Numerical Methods for Unsteady-State Molecular Diffusion. Dimensional Analysis in Mass Transfer. Boundary-Layer Flow and Turbulence in Mass Transfer. II. SEPARATION PROCESS PRINCIPLES (INCLUDES UNIT OPERATIONS). 8. Evaporation. Introduction. Types of Evaporation Equipment and Operation Methods. Overall Heat-Transfer Coefficients in Evaporators. Calculation Methods for Single-Effect Evaporators. Calculation Methods for Multiple-Effect Evaporators. Condensers for Evaporators. Evaporation of Biological Materials. Evaporation Using Vapor Recompression. 9. Drying of Process Materials. Introduction and Methods of Drying. Equipment for Drying. Vapor Pressure of Water and Humidity. Equilibrium Moisture Content of Materials. Rate-of-Drying Curves. Calculation Methods for Constant-Rate Drying Period. Calculation Methods for Falling-Rate Drying Period. Combined Convection, Radiation, and Conduction Heat Transfer in Constant-Rate Period. Drying in Falling-Rate Period by Diffusion and Capillary Flow. Equations for Various Types of Dryers. Freeze-Drying of Biological Materials. Unsteady-State Thermal Processing and Sterilization of Biological Materials. 10. Stage and Continuous Gas-Liquid Separation Processes. Types of Separation Processes and Methods. Equilibrium Relations Between Phases. Single and Multiple Equilibrium Contact Stages. Mass Transfer Between Phases. Continuous Humidification Processes. Absorption in Plate and Packed Towers. Absorption of Concentrated Mixtures in Packed Towers. Estimation of Mass-Transfer Coefficients for Packed Towers. Heat Effects and Temperature Variations in Absorption. 11. Vapor-Liquid Separation Processes. Vapor-Liquid Equilibrium Relations. Single-Stage Equilibrium Contact for Vapor-Liquid System. Simple Distillation Methods. Distillation with Reflux and McCabe-Thiele Method. Distillation and Absorption Efficiencies for Tray and Packed Towers. Fractional Distillation Using Enthalpy-Concentration Method. Distillation of Multicomponent Mixtures. 12. Liquid-Liquid and Fluid-Solid Separation Processes. Introduction to Adsorption Processes. Batch Adsorption. Design of Fixed-Bed Adsorption Columns. Ion-Exchange Processes. Single-Stage Liquid-Liquid Extraction Processes. Types of Equipment and Design for Liquid-Liquid Extraction. Continuous Multistage Countercurrent Extraction. Introduction and Equipment for Liquid-Solid Leaching. Equilibrium Relations and Single-Stage Leaching. Countercurrent Multistage Leaching. Introduction and Equipment for Crystallization. Crystallization Theory. 13. Membrane Separation Processes. Introduction and Types of Membrane Separation Processes. Liquid Permeation Membrane Processes or Dialysis. Gas Permeation Membrane Processes. Complete-Mixing Model for Gas Separation by Membranes. Complete-Mixing Model for Multicomponent Mixtures. Cross-Flow Model for Gas Separation by Membranes. Derivation of Equations for Countercurrent and Cocurrent Flow for Gas Separation for Membranes. Derivation of Finite-Difference Numerical Method for Asymmetric Membranes. Reverse-Osmosis Membrane Processes. Applications, Equipment, and Models for Reverse Osmosis. Ultrafiltration Membrane Processes. Microfiltration Membrane Processes. 14. Mechanical-Physical Separation Processes. Introduction and Classification of Mechanical-Physical Separation Processes. Filtration in Solid-Liquid Separation. Settling and Sedimentation in Particle-Fluid Separation. Centrifugal Separation Processes. Mechanical Size Reduction. Appendices. Appendix A.1. Fundamental Constants and Conversion Factors. Appendix A.2. Physical Properties of Water. Appendix A.3. Physical Properties of Inorganic and Organic Compounds. Appendix A.4. Physical Properties of Foods and Biological Materials. Appendix A.5. Properties of Pipes, Tubes, and Screens. Notation. Index.

279 citations

Journal ArticleDOI
J. Y. Murthy, S. R. Mathur1
TL;DR: In this paper, a cell-based numerical scheme is devised for computing radiative heat transfer using meshes composed of arbitrary unstructured polyhedra, which is shown to be robust and accurate through comparisons with published solutions.
Abstract: The e nite volume method has been shown to accurately predict radiative heat transfer in absorbing, emitting, and scattering media. However, computations have for the most part been restricted to structured, body-e tted meshes. In this paper a conservative cell-based numerical scheme is devised for computing radiative heat transfer using meshes composed of arbitrary unstructured polyhedra. The method is shown to be robust and accurate through comparisons with published solutions.

279 citations

Journal ArticleDOI
TL;DR: In this article, the effect of three parameters: input heat transfer rates (100 Q ˙ 900 W ), the working fluid filling ratios (30%⩽FR ǫ⩾90%), and the evaporator length (aspect ratios) were investigated experimentally.

279 citations

Journal ArticleDOI
TL;DR: In this paper, the effective thermal conductivity and viscosity of nanofluid are calculated by KKL (Koo-Kleinstreuer-Li) correlation.
Abstract: In this paper magnetohydrodynamic free convection flow of CuO–water nanofluid in a square enclosure with a rectangular heated body is investigated numerically using Lattice Boltzmann Method (LBM) scheme. The effective thermal conductivity and viscosity of nanofluid are calculated by KKL (Koo–Kleinstreuer–Li) correlation. The influence of pertinent parameters such as Hartmann number, nanoparticle volume fraction and Rayleigh number on the flow, heat transfer and entropy generation have been examined. The results show that the heat transfer rate and Dimensionless entropy generation number increase with increase of the Rayleigh number and nanoparticle volume fraction but it decreases with increase of the Hartmann number.

279 citations

Book
01 Jan 1963

279 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
20235,737
202210,641
20217,860
20208,182
20198,826
20188,737