CONTENTS
Acknowledgements 8
Abstract 12
1 Introduction 13
1.1 Background 13
1.2 Need for study 14
1.3 Hypothesis and research questions 14
2 Literature review 15
2.1 Evaporative cooling Basics 15
2.2 Review of Evaporative cooling technologies 15
2.3 Review of Heat Recovery technology (HR) 16
2.4 Fresh air cooling: a case study 16
2.5 Probabilistic analysis of evaporative cooling potential in United Kingdom 16
2.6 Review of Hybrid cooling systems 17
2.6.1 Evaporative cooling (DEC+IEC) & Heat recovery 17
2.6.2 Hybrid system with 2-stage IEC and Mechanical cooling system 17
2.6.3 HyPak-MA – A Hydroponic packaged rooftop unit 18
2.6.4 Hybrid direct expansion with evaporative pre-cooling 18
2.7 Hybrid system efficiency 19
2.8 Summary of literature review 19
2.9 Need for this study 19
3 Methodology 20
3.1 Selection criteria and documentation of office space 20
3.1.1 Air-conditioning system details of Aditi office 20
3.2 Selection of simulation software 21 5
3.3 Simulation approach 21
3.3.1 Model Aditi office with mechanical cooling system 21
3.3.2 Model a Base Case office with ventilation system (LEV) 22
3.3.3 Modelling Base Case with mechanical cooling system (LEVC) 24
3.3.4 Modelling integrated cooling system for the Base Case 25
3.4 Comparison and analysis of the results 29
4 Simulation results, analysis and discussions 30
4.1 Simulated Cases 30
4.1.1 Establishing a Base Case 34
4.1.2 Analysis of Mechanical cooling 34
4.1.3 Analysis of evaporative cooling 36
4.1.4 Analysis for mechanical and evaporative cooling 37
4.1.5 Analysis for Heat Recovery Device (HR) 44
5 Conclusion and further study 46
5.1 Conclusion 46
5.2 Further study 47
References 48