Table of Contents
ABSTRACT i
UNDERTAKING iii
CERTIFICATE v
ACKNOWLEDGEMENTS vii
LIST OF FIGURES xi
LIST OF TABLES
1. INTRODUCTION 1
1.1. Aim 1
1.2. Research Question 2
1.3. Research Objective 2
1.4. Significance of Research 2
1.5. Scope 3
2. Literature STudy 5
2.1. Introduction 5
2.2. Soiling and its Impact on Glazing 5
2.3. Dust Deposition and Daylight Transmittance: Factors and Findings 6
2.4. Impact of Dust Accumulation on Visual Clarity and Perception 7
3. Research Methodology 9
3.1. Harvesting Samples of soiled glass 9
3.2. Measurement of light transmission Properties 10
3.2.1. Spectrophotometer 10
3.2.2. Light Transmission Box Instrument. 11
3.3. Test room Experiment for Visual Clarity with Dust Perception. 13
3.3.1. Test Facility 13
3.3.2. Experimental procedure and studied parameter 15
3.3.3. Questionnaire used for data collection. 16
3.4. Harvesting Samples of soiled glass 17
3.5. Measurement of light transmission Properties 18
3.5.1. Spectrophotometer 18
3.5.2. Light Transmission Box Instrument. 19
3.6. Test room Experiment for Visual Clarity with Dust Perception. 20
3.6.1. Test Facility 20
3.6.2. Experimental procedure and studied parameter 22
3.6.3. Questionnaire used for data collection. 23
4. Result and Discussions 25
4.1. Impact of particle deposition on light transmission properties. 25
4.1.1. Light Transmittance Measurement 25
4.1.2. Haze formation (Images and Description) 28
4.2. Visual Clarity with Dust Accumulation over time 29
4.2.1. Observation and Interpretation (total score and descriptive statistic) 29
4.2.2. Analysis with variance result. 34
5. Implication of operational frequency of cleaning 37
5.1. Sensitivity Analysis 38
5.2. Optimization Cases 39
6. conclusion 41
References 43
APPENDIX 45