CONTENTS
Abstract 5
List of Figures 8
Acknowledgement 11
Overview of this research: 12
1. INTRODUCTION 13
Background 14
Purpose of the study 16
Retrofitting of the daylighting systems in office buildings 16
Research question 16
Objectives 17
Significance of the study 17
Scope and limitations 18
Hypothesis 18
2. Literature study 19
Climatic data 20
Daylight Redirecting Systems 22
Introduction 22
Vertical pipes: 23
Horizontal pipes 23
Light shelves 23
Anidolic duct system: 26
Daylighting Metrics 29
Daylight factor 29
Dynamic daylight metrics 30
Daylight Autonomy 30
Spatial daylight autonomy (sDA) 30
Useful Daylight illuminance (UDI): 30
Annual sun exposure 31
Review 31
3. Methodology 32
Simulation Guidelines 34
Validated Tool for Simulation 35
Building Data 36
Simulation set up 38
4. Simulations 41
Parameters 42
Base Case Model 43
Case 2: With Anidolic duct 45
Case 3: With both the systems 46
5. Analysis and Observations 47
Performance of each devices: 48
Performance of light shelves and anidolic ducts for each orientation: 56
6. Conclusion 58
Further research 59
Nomenclature 60
BIBLIOGRAPHY 61
APPENDIX 64