by David Luke Cronin. / Thesis (M.Phil.)--Chinese University of Hong Kong, 1996. / Includes bibliographical references (leaves 148-156). / Investigation into The Dynamics of Waste Air Dispersal from High-Rise Residences --- p.i / Acknowledgements --- p.ii / Abstract --- p.iii / Contents --- p.iv / List of Illustrations --- p.viii / Preface / Chapter 1. --- INTRODUCTION --- p.1 / Chapter 1.1. --- The Development of Building Technology in Response to the Forces of Wind and Water --- p.2 / Chapter 1.1.1. --- Roman concrete --- p.3 / Chapter 1.1.2. --- Requirement for a stronger mortar --- p.5 / Chapter 1.1.3. --- Discovery of an improved mortar --- p.5 / Chapter 1.2. --- Development of Wind Engineering --- p.7 / Chapter 1.3. --- Computational Wind Engineering --- p.10 / Chapter 1.4. --- Development of Building Regulations concerning Ventilation and Light in Hong Kong --- p.14 / Chapter 1.4.1. --- First building regulations --- p.15 / Chapter 1.4.2. --- Chadwick's enquiry --- p.17 / Chapter 1.4.3. --- First requirement for windows in rooms --- p.18 / Chapter 1.4.4. --- Public Health Ordinance --- p.19 / Chapter 1.4.5. --- Building Ordinance --- p.20 / Chapter 1.4.6. --- Plot ratio regulations and natural ventilation --- p.22 / Chapter 1.5. --- Plot Ratio and Site Coverage --- p.23 / Chapter 1.5.1. --- Gross Floor Area (GFA) --- p.24 / Chapter 1.5.2. --- Cruciform tower --- p.27 / Chapter 1.5.3. --- Re-entrant --- p.30 / Chapter 1.6. --- Summary --- p.35 / Chapter 2. --- VENTILATION OF RESIDENTIAL DWELLINGS AND THE REMOVAL OF AIRBORNE WASTES --- p.37 / Chapter 2.1. --- High-rise Buildings in Hong Kong and Ventilation --- p.37 / Chapter 2.2. --- "Climatic Conditions in Hong Kong, and the Requirement for Air-conditioning" --- p.38 / Chapter 2.3. --- Typical Practice in Hong Kong High-rises --- p.40 / Chapter 2.4. --- Source Ventilation --- p.42 / Chapter 2.5. --- Traditional Recommendations for a Tropical Climate --- p.42 / Chapter 2.6. --- Building Regulations Concerning Ventilation of Residences --- p.43 / Chapter 2.6.1. --- Hong Kong Government building regulations --- p.43 / Chapter 2.6.2. --- UK building regulations --- p.44 / Chapter 2.6.3. --- US building regulations --- p.46 / Chapter 2.7. --- Summary --- p.47 / Chapter 3. --- MODELLING OF WIND FLOW AROUND BUILDINGS --- p.48 / Chapter 3.1. --- Summary of CFD Methods for Air Flow around Buildings --- p.48 / Chapter 3.1.1. --- Validation of the k-ε model for wind pressures on buildings --- p.50 / Chapter 3.2. --- Atmospheric Boundary Layer --- p.50 / Chapter 3.3. --- Use of Wind Tunnels to Predict Wind Effects on Tall Buildings --- p.52 / Chapter 3.3.1. --- Local wind climate --- p.53 / Chapter 3.3.2. --- Pressure study --- p.53 / Chapter 3.3.3. --- Aeroelastic study --- p.54 / Chapter 3.3.4. --- Wind environment study --- p.54 / Chapter 3.4. --- Architectural Aerodynamics --- p.54 / Chapter 3.4.1. --- Reynolds number --- p.55 / Chapter 3.4.2. --- Pressure coefficient --- p.56 / Chapter 4. --- PREDICTION OF OUTDOOR POLLUTION AND AIR QUALITY --- p.57 / Chapter 4.1. --- Computer Modelling of Pollution Dispersion --- p.57 / Chapter 4.2. --- Exhaust Dispersion from Buildings - Distance Dilution Model --- p.59 / Chapter 4.2.1. --- Wall exhaust discharges in residential ventilation --- p.59 / Chapter 4.2.2. --- Acceptable levels of kitchen exhaust in the outside air --- p.62 / Chapter 4.2.3. --- Distance dilution model with corrections for building size --- p.62 / Chapter 4.3. --- Gaussian Plume Model --- p.63 / Chapter 4.4. --- Wind Tunnel Models of Pollution Dispersion in a Built-up Area --- p.65 / Chapter 5. --- INDOOR AIR QUALITY - COOKING FUMES --- p.67 / Chapter 5.1. --- Local Exhaust Ventilation and Efficiency of Pollutant Capture --- p.67 / Chapter 5.2. --- Indoor Pollution due to Cooking Stove Smoke --- p.68 / Chapter 5.3. --- Cooking Oil Detected in Hong Kong Air --- p.69 / Chapter 6. --- THEORETICAL BACKGROUND: RELEVANT ASPECTS OF CFD USED IN THIS STUDY --- p.71 / Chapter 6.1. --- Mathematical Model --- p.71 / Chapter 6.2. --- Reynolds Averaged Navier Stokes Equations --- p.71 / Chapter 6.3. --- SIMPLE method --- p.74 / Chapter 6.4. --- Wall Shear Stress Calculations --- p.75 / Chapter 6.5. --- Wall Boundary Conditions for k and ε --- p.77 / Chapter 6.6. --- Species Calculations --- p.77 / Chapter 6.7. --- Thermal Transfer --- p.78 / Chapter 6.8. --- Grid System and Boundary Conditions --- p.81 / Chapter 6.8.1. --- Geometry and grid --- p.81 / Chapter 6.8.2. --- Boundary conditions --- p.85 / Chapter 6.9. --- Natural Convection Flows --- p.85 / Chapter 7. --- MODELLING PROCEDURE --- p.87 / Chapter 7.1. --- Dispersal of Exhaust Air from Kitchens --- p.87 / Chapter 7.1.1. --- Kitchen range hood exhaust rates --- p.87 / Chapter 7.1.2. --- Exhaust air release rates modelled --- p.88 / Chapter 7.1.3. --- Initial approximation of dilution in the re-entrant --- p.89 / Chapter 7.2. --- Modelling of Waste Heat Dispersal from Air-conditioning Units --- p.90 / Chapter 7.2.1. --- Typical air-conditioner energy figures --- p.90 / Chapter 7.2.2. --- Representation of condenser heat in a CFD model --- p.92 / Chapter 7.2.3. --- Approximation of temperature increase --- p.94 / Chapter 7.3. --- Representation of the High-rise Tower --- p.94 / Chapter 7.4. --- Power-law Profile: Increasing Wind Speed with Height --- p.95 / Chapter 7.5. --- Wind Tunnel Verification --- p.97 / Chapter 7.5.1. --- Wind velocities and pressures --- p.97 / Chapter 7.5.2. --- Wind tunnel prediction of contaminant dilution --- p.98 / Chapter 7.6. --- Summary of Simulations --- p.99 / Chapter 7.6.1. --- Kitchen exhaust air dispersal --- p.100 / Chapter 7.6.2. --- Air-conditioner waste heat dispersal --- p.100 / Chapter 8. --- DISCUSSION OF RESULTS --- p.102 / Chapter 8.1. --- Wind Patterns in the Re-entrant --- p.103 / Chapter 8.1.1. --- Wind into re-entrant --- p.104 / Chapter 8.1.2. --- Wind at 90° to the re-entrant --- p.104 / Chapter 8.1.3. --- Re-entrant on the leeward side of the building --- p.105 / Chapter 8.2. --- Exhaust Air Concentration --- p.112 / Chapter 8.2.1. --- Wind into re-entrant --- p.113 / Chapter 8.2.2. --- Wind at 90° to the re-entrant --- p.113 / Chapter 8.2.3. --- Re-entrant on the leeward side --- p.114 / Chapter 8.3. --- Temperature Increase in the Re-entrant --- p.121 / Chapter 8.3.1. --- Wind into the re-entrant --- p.122 / Chapter 8.3.2. --- Wind at 90° to the re-entrant --- p.123 / Chapter 8.3.3. --- Re-entrant on leeward side --- p.123 / Chapter 8.4. --- Summary of Findings --- p.130 / Chapter 9. --- NATURAL CONVECTION MODELLING --- p.132 / Chapter 10. --- CONCLUSIONS --- p.136 / Chapter 10.1. --- Waste Air --- p.136 / Chapter 10.2. --- Waste Heat --- p.138 / Chapter 10.3. --- Implications --- p.139 / Chapter 10.4. --- Suggestions --- p.140 / APPENDIX A: SIMULATION CASE DEFINITIONS / Chapter A.1 --- Definitions used for all simulations --- p.142 / Chapter A.1.1 --- Boundary Conditions used in all simulations --- p.145 / Chapter A. 1.2 --- Equations used in all simulations --- p.145 / Chapter A.2 --- Simulation of Wind Flow around the Building --- p.145 / Chapter A.3 --- Air-conditioner Waste Heat Dispersal Simulations --- p.146 / Chapter A.1.1 --- Additional boundary conditions used to represent air-conditioners --- p.146 / Chapter A. 1.2 --- Additional equations used --- p.146 / Chapter A.4 --- Exhaust Air Dispersal from Kitchens --- p.147 / Chapter A.1.1 --- Additional boundary conditions used to represent air-conditioners --- p.147 / Chapter A. 1.2 --- Additional equations used --- p.147 / BIBLIOGRAPHY --- p.149 / Books --- p.148 / Papers --- p.149 / Other Sources --- p.152 / Notes --- p.153
| Identifer | oai:union.ndltd.org:cuhk.edu.hk/oai:cuhk-dr:cuhk_321583 |
| Date | January 1996 |
| Contributors | Cronin, David Luke., Chinese University of Hong Kong Graduate School. Division of Architecture. |
| Publisher | Chinese University of Hong Kong |
| Source Sets | The Chinese University of Hong Kong |
| Language | English |
| Detected Language | English |
| Type | Text, bibliography |
| Format | print, xii, 156 leaves : ill. (some col.) ; 30 cm. |
| Coverage | China, Hong Kong, China, Hong Kong |
| Rights | Use of this resource is governed by the terms and conditions of the Creative Commons “Attribution-NonCommercial-NoDerivatives 4.0 International” License (http://creativecommons.org/licenses/by-nc-nd/4.0/) |
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