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Natural ventilation of buildings : theory, measurement and design / David Etheridge
Resource type: Ressourcentyp: Buch (Online)Book (Online)Language: English Publisher: Chichester, West Sussex : Wiley, 2012Edition: Online-AusgDescription: Online-Ressource (1 online resource (xxv, 428 p.)) : illISBN:- 9781119951773
- 111995438X
- 9781119954378
- 047066035X
- 1119951771
- 111995178X
- 1119954371
- 9781119954385
- 9781283280068
- 9781119951780
- 128328006X
- 9780470660355
- 697.9/2 23
- 697.92
- TH7674
- TH7674 .E84 2011
Contents:
Summary: Natural ventilation is considered a prerequisite for sustainable buildings and is therefore in line with current trends in the construction industry. The design of naturally ventilated buildings is more difficult and carries greater risk than those that are mechanically ventilated. A successful result relies increasingly on a good understanding of the abilities and limitations of the theoretical and experimental procedures that are used for design. There are two ways to naturally ventilate a building: wind driven ventilation and stack ventilation. The majority of buildings employing natural ventilation rely primarily on wind driven ventilation, but the most efficient design should implement both types. Natural Ventilation of Buildings: Theory, Measurement and Design comprehensively explains the fundamentals of the theory and measurement of natural ventilation, as well as the current state of knowledge and how this can be applied to design. The book also describes the theoretical and experimental techniques to the practical problems faced by designers. Particular attention is given to the limitations of the various techniques and the associated uncertainties. Key features: Comprehensive coverage of the theory and measurement of natural ventilation Detailed coverage of the relevance and application of theoretical and experimental techniques to design Highlighting of the strengths and weaknesses of techniques and their errors and uncertainties Comprehensive coverage of mathematical models, including CFD Two chapters dedicated to design procedures and another devoted to the basic principles of fluid mechanics that are relevant to ventilation This comprehensive account of the fundamentals for natural ventilation design will be invaluable to undergraduates and postgraduates who wish to gain an understanding of the topic for the purpose ofSummary: Natural Ventilation of Buildings: THEORY, MEASUREMENT AND DESIGN -- Contents -- Preface -- Acknowledgements -- Principal Notation -- 1 Introduction and Overview of Natural Ventilation Design -- 1.1 Aims and Scope of the Book -- 1.1.1 Aims -- 1.1.2 Scope -- 1.2 Natural Ventilation in Context -- 1.2.1 Hierarchy of Ventilation Systems -- 1.2.2 Advantages and Disadvantages of Natural Ventilation -- 1.2.3 Differences between Natural and Mechanical Ventilation -- 1.3 Overview of Design -- 1.3.1 Overall Design Process -- 1.3.2 Stage 1: Assessing Feasibility -- 1.3.3 Stage 2: Choosing a Ventilation Strategy -- 1.3.4 Stage 3: Achieving the Ventilation Strategy -- 1.3.5 Stage 4: Internal Air Motion and Related Phenomena -- 1.3.6 Stage 5: Commissioning -- 1.4 Notes on Sources -- 1.4.1 Coverage of Recent and Past Developments -- 1.4.2 Natural Ventilation and Safety -- References -- 2 Physical Processes in Natural Ventilation -- 2.1 Introduction -- 2.1.1 Fundamental Principles of Fluid Mechanics -- 2.1.2 Numerical Analysis and CFD -- 2.2 The Effect of Gravity on Ventilation Flows -- 2.2.1 Navier-Stokes Equations -- 2.2.2 Hydrostatic and Piezometric Pressures -- 2.2.3 Envelope Flows -- 2.2.4 Internal Air Motion -- 2.3 Types of Flow Encountered in Ventilation -- 2.3.1 Reynolds Number -- 2.3.2 Laminar Flow -- 2.3.3 Transitional Flow -- 2.3.4 Turbulent Flow -- 2.4 Fluid Mechanics - Other Important Concepts and Equations -- 2.4.1 A Fluid as a Continuum -- 2.4.2 Transport Mechanisms -- 2.4.3 Momentum Principle - Newton's Laws of Motion -- 2.4.4 Momentum Equations for a Defined Body of Fluid and a Control Volume -- 2.4.5 Hydrostatic Equation -- 2.4.6 Steady Flow -- 2.4.7 Mass Conservation for an Envelope -- 2.4.8 Bernoulli's Equation -- 2.4.9 Energy Equations for a System and a Fixed Control Volume -- 2.4.10 Loss Coefficient and Resistance Coefficient.PPN: PPN: 809429705Package identifier: Produktsigel: ZDB-26-MYL | ZDB-30-PAD | ZDB-30-PQE
Cover; Title Page; Copyright; Dedication; Preface; Acknowledgements; Principal Notation; Subscripts; Superscripts; Abbreviations; Chapter 1: Introduction and Overview of Natural Ventilation Design; 1.1 Aims and Scope of the Book; 1.2 Natural Ventilation in Context; 1.3 Overview of Design; 1.4 Notes on Sources; References; Chapter 2: Physical Processes in Natural Ventilation; 2.1 Introduction; 2.2 The Effect of Gravity on Ventilation Flows; 2.3 Types of Flow Encountered in Ventilation; 2.4 Fluid Mechanics - Other Important Concepts and Equations; 2.5 Steady and Unsteady Ventilation
2.6 Flow Through a Sudden Expansion2.7 Dimensional Analysis; 2.8 Heat Transfer between Air and Envelope; 2.9 Definitions Relating to Ventilation Rate; 2.10 Errors and Uncertainties; 2.11 Mathematical Models; 2.12 Boundary Conditions; Bibliography; Chapter 3: Steady Flow Characteristics of Openings; 3.1 Introduction; 3.2 Classification of Openings; 3.3 Still-air Discharge Coefficient; 3.4 Installation Effects on Cd; 3.5 Openings in Combination; 3.6 Determination of Cd; 3.7 Uncertainties in Design Calculations; 3.8 Other Definitions of Discharge Coefficient; 3.9 Large (and Very Large) Openings
3.10 Relevance to DesignReferences; Chapter 4: Steady Envelope Flow Models; 4.1 Introduction; 4.2 Basic Theory; 4.3 Single- and Multi-cell Models; 4.4 Simple Analytic Solutions; 4.5 Non-uniform Density; 4.6 Turbulent Diffusion; 4.7 Large Openings; 4.8 Adventitious Openings; 4.9 Explicit Method of Solution; 4.10 Uncertainties in Envelope Flow Models; 4.11 Combined Envelope Models and Thermal Models; 4.12 Models for Very Large Openings; 4.13 Relevance to Design; References; Chapter 5: Unsteady Envelope Flow Models; 5.1 Introduction; 5.2 Flow Equation; 5.3 Pressure Difference across Openings
5.4 Mass Conservation Equation5.5 Envelope Flow Models; 5.6 Comparisons with Measurement; 5.7 Mean Flow Rates; 5.8 Instantaneous Flow Rates; 5.9 Unsteady Flow Models in Design; 5.10 Relevance to Design; References; Chapter 6: Internal Air Motion, Zonal Models and Stratification; 6.1 Introduction; 6.2 Governing Equations; 6.3 Primary and Secondary Flows; 6.4 Zonal Models; 6.5 Coarse-grid CFD; 6.6 Integrated Zonal and Envelope Flow Models; 6.7 Stratification; 6.8 Relevance to Design; References; Chapter 7: Contaminant Transport and Indoor Air Quality; 7.1 Introduction
7.2 Concentration at a Point7.3 Conservation Equations for Bounded Spaces, Envelope Models; 7.4 Conservation Equations for Large Unbounded Volumes as Used in Zonal Models; 7.5 Analytic Relations for Concentration at a Point; 7.6 Analytic Relations for Uniform Concentration; 7.7 Analytic Relations for Non-uniform Concentration; 7.8 Calculations with CFD, Coarse-grid CFD and Zonal Models; 7.9 Definitions Relating to Contaminant Removal; 7.10 Relevance to Design; References; Chapter 8: Age of Air and Ventilation Efficiency; 8.1 Introduction; 8.2 Theoretical Modelling of Age Properties at a Point
8.3 Multi-zone (Multi-chamber) Models
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