Heat Transfer

Heat Transfer

Non-Stationary Heat Transfer Through Walls, Measurement of Thermal Conductivity, Heat Transfer with Two Phase Refrigerants

1st Edition - January 1, 1971

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  • Author: Unknown Author
  • eBook ISBN: 9781483154480

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Heat Transfer: Current Applications of Air Conditioning deals with problems and applications of air conditioning. The discussions are organized around non-stationary heat transfer through walls; study of confined rooms or enclosures; calculation of cooling loads; heat transfer with two-phase refrigerants; measurement of thermal conductivity and water vapour permeability of insulating materials; and tests on air handling equipment (room air-conditioners, induction or fan coil air-conditioners). This book is comprised of 60 chapters and begins with an assessment of the unit-system controversy in the United States and the quest for an ultimate resolution. The following chapters explore the resolution of conductive heat transfer problems using the finite element method; thermal behavior of composite walls under transient conditions; thermal and electrical models for solving problems of non-stationary heat transfer through walls; and use of a radiometer to measure the average temperature of a wall. Experimental results for mixed air convection along a vertical surface are also presented. This monograph will be a valuable resource for electronics engineers.

Table of Contents

  • Foreword

    List of Participants


    Section 1 Generalities

    The Quest for Ultimate Resolution of the Unit-System Controversy in U.S.A

    Time-Wise Persistence of Error in Presentation of Thermodynamic Data Such as on "Entropy"

    Section 2 Non-Stationary Heat Transfer through Walls Study of Confined Enclosures Calculation of Cooling Loads

    The Resolution of Conductive Heat Transfer Problems Using the Finite Element Method

    The Solution of Unsteady Heat Conduction Problems in Composite Walls via the Monte Carlo Method

    Thermal Behavior of Composite Walls under Transient Conditions. Their Characterization by Two Parameters. Simplified Calculation Method

    Analytical Study of Thermally Active Structures in Unsteady State Conditions

    Resistance Network Analogue Method for Two-Dimensional Unsteady Temperature Distribution under Refrigeration Installations

    Electrical Representation of Unsteady State Thermal Fields by Means of a Continuous Resistive and Capacitive Medium

    Thermal and Electrical Models for Solving Problems of Non-Stationary Heat Transfer through Walls

    Calculation of the Solar Heat Gain through Composite Constructions by the Matrix Method

    Detection of the Superficial Heat Flux Density via Probes of Low Inertia and High Space Resolution

    Mixed Air Convection along a Vertical Surface. Experimental Results

    A Simple Thermo-Anemometer of Very Low Directional Effect

    Visualizing a Convective Field in a Confined Space

    Measuring the Average Temperature of a Wall with the Aid of a Radiometer

    Unsteady State Air Temperature Measurements in the Proximity of Radiating Walls

    Periodic Heat Flow through Lightweight Walls: Influence of the Heat Capacity of Solid Bodies upon Room Temperature

    System for the Calculation of Transient Thermal Responses of Rooms

    On Computing the Temperature of a Room under Solar Radiation

    Electrical Analog Model of a System with Transient Radiation Heat Transfer

    Problems of Room Heat-up in Summer

    Heat Capacity of Buildings

    Actual Cooling Loads from Solar Radiation through Windows of Air Conditioned Rooms

    Experiments on Stationary and Oscillating Heat Transfer in Large Walls

    Examination of Convective Heat Transport in an Airproof Cased Plate of Mineral Wool

    Heat Transfer in a Porous Insulation with Gas Diffusion through the Walls

    On the Water Vapor Transmission through Porous Materials

    Urethane Rigid Foams: a Review of the Factors Affecting the Attainment and Retention of Optimum Thermal Conductivity and Their Significance in Service Applications

    A Simple Transient Method for the Rapid Comparison of the Thermal Diffusivities of Poor Conductors

    Section 3 Measurement of Thermal Conductivity

    On the Design of a Guarded Hot Plate Apparatus

    Influence of the Mode of Construction of Guard-Ring Heating Plates on the Thermal Conductivity Measurements of Insulating Materials

    Some Remarks on a Non-Steady-State Method for Measuring the Thermal Conductivity of Materials

    Modified Guarded Hot Plate Apparatus for Measuring Thermal Conductivity of Moist Materials

    Revolving Apparatus with a Doubly-Guarded Hot Plate for Measuring the Thermal Conductivity of Insulating Materials

    A Calorimeter for Measuring Very Small Heat Fluxes

    A Bubble-Column-Apparatus for Measuring the Thermal Conductivity and the Diffusion Resistance Factor of Insulating Materials

    Measuring the Thermal Diffusivity of Insulating Materials by Means of a Plate Apparatus Used for Measurements of Thermal Conductivity

    The Reproducibility of Thermal Diffusivity Measurements in Quasi-Steady Periodic Conditions

    Section 4 Heat Transfer with Two-Phase Refrigerants

    Liquid-Vapor Phase Equilibrium N Solutions of R-22 in Dibutyl Phthalate and Tetraethylene Glycol Dimethyl Ether

    Heat Transfer in Flooded Evaporator Tubes: Mutual Influence between Tubes

    High Velocity Condensation of R-11 Vapor Inside Vertical Tubes

    Freezing of Liquids in Pipes with Turbulent Flow

    Model with Variable Slip for the Study of Two-Phase Critical Flows

    Temperature Distribution in a Frost Layer Formed on a Cylindrical Tube in Cross Flow

    Possibilities for Intensifying the Heat Exchange in "Dry" Evaporators through Influence on the Dynamics of Two Phase Flow

    Section 5 Testing Air Treatment Equipment

    Some Experience with a New Air Conditioning Test Room

    Tests on Induction Air Conditioners

    Heat Transfer in Fan-Coils for Air Conditioning

    Heat Losses from Jet-Convectors in 4-Pipe Installations Having Air-Side Regulation

    Observations with Respect to Damper and Water Controlled Induction Units

    Noise in Jet-Convectors

    Noise in Fan-Convectors

    Noise Control of Air Conditioning Cooling Towers

    Section 6 Topical Problems and Special Applications of Air Conditioning

    New Tendencies for Designing Comfort Air-Conditioning Plants

    Optimizing the Fresh Air Flow in an Air Conditioning System Using a Ventilated Luminaire

    Maximum Exploitation of Installed Capacity in Air Conditioning of Hospitals

    The Total Energy System as an Energy Producer in Air Conditioning Installations

    Economic Conditions for the Use of Gas-Engine-Driven Refrigerating Compressors in Air-Conditioning Plant

    Individual Automatic Central Stations for the Production of Total Energy with Boiling-Cooling Gas Engines and Absorption Machines

    Evolution of Central Plant toward a Heat Reclaim Loop

Product details

  • No. of pages: 608
  • Language: English
  • Copyright: © Pergamon 1971
  • Published: January 1, 1971
  • Imprint: Pergamon
  • eBook ISBN: 9781483154480

About the Author

Unknown Author

Dr. Sam Stuart is a physiotherapist and a research Fellow within the Balance Disorders Laboratory, OHSU. His work focuses on vision, cognition and gait in neurological disorders, examining how technology-based interventions influence these factors. He has published extensively in world leading clinical and engineering journals focusing on a broad range of activities such as real-world data analytics, algorithm development for wearable technology and provided expert opinion on technology for concussion assessment for robust player management. He is currently a guest editor for special issues (sports medicine and transcranial direct current stimulation for motor rehabilitation) within Physiological Measurement and Journal of NeuroEngineering and Rehabilitation, respectively.

Affiliations and Expertise

Senior Research Fellow, Department of Sport, Exercise and Rehabilitation, Northumbria University, UK Honorary Physiotherapist, Northumbria Healthcare NHS Foundation Trust, North Shields, UK

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