Nomenclature
List of Abbreviations
Chapter 1 Introduction
1.1 Background
1.2 Objectives
1.3 Structure of the book
Chapter 2 Literature Review
2.1 Introduction
2.2 Performances of stratified air distribution systems
2.2.1 Indoor air quality
2.2.2 Thermal comfort
2.2.3 Energy consumption
2.3 Evaluation criteria for stratified air distribution systems
2.3.1 Indoor air quality evaluation
2.3.2 Thermal comfort evaluation
2.4 Key design parameters for STRAD systems
2.4.1 Space types
2.4.2 Heat source types and locations
2.4.3 Supply diffusersr characteristics
2.4.4 Layouts of exhaust and return grilles
2.4.5 Cooling load
2.4.5.1 Cooling load diversity
2.4.5.2 Cooling load calculation methods
2.4.6 Supply air flow rate
2.4.7 Stratification height
2.5 Integration of stratified air distribution system with personalized ventilation
2.6 Brief review on the CFD simulation for indoor airflow
2.7 Research gaps
2.8 Summary
Chapter 3 Comparisons of two typical thermal comfort models
3.1 Introduction
3.2 Different coupling procedures
3.3 CFD simulations
3.4 Comparison of thermal comfort evaluation results
3.5 Discussion and Summary
Chapter 4 Cooling coil load calculation method for stratified air distribution systemsand Experimental validation
4.1 Introduction
4.2 Energy saving and Cooling coil load calculation
4.3 Experimental Validation
4.3.1 Experimental chamber
4.3.2 Experimental devices and equipments
4.3.2.1 Thermal manikins
4.3.2.2 Thermocouples and data loggers
4.3.3 Experimental design
4.3.4 Experimental results
4.3.4.1 Thermal comfort
4.3.4.2 Energy saving and cooling coil load calculation
4.4 Summary
Chapter 5 Stratified air distribution in a small office
5.1 Introduction
5.2 CFD model validation
5.3 Further validation for the CFD model
5.4 Simulation cases
5.5 Simulation Results
5.5.1 Thermal comfort
5.5.2 Energy saving
5.5.3 Effective cooling load factors
5.6 Summary
Chapter 6 Stratified air distribution system in a large lecture theatre
6.1 Introduction
6.2 Lecture theatre configurations
6.3 Mesh generation and Boundary conditions
6.4 Local thermal environments in different rows
6.5 Different stratified air distribution designs
6.5.1 Simulation cases description
6.5.2 Airflow and temperature stratification
6.5.3 Thermal comfort
6.5.4 Occupied zone cooling load calculations
6.5.5 Energy saving
6.6 Different heights of return grilles
6.6.1 Simulation cases description
6.6.2 Thermal comfort
6.6.3 Energy saving
6.6.4 Effective cooling load factors
6.7 Discussion and Summary
Chapter 7 Alternative stratified air distribution designs in a terminal building
7.1 Introduction
7.2 Simulation case descriptions
7.2.1 Hall geometry and air distribution designs
7.2.2 Simulation cases and heat gains
7.2.3 Mesh generation and boundary conditions
7.3 Simulation results
7.3.1 Temperature and velocity distributions
7.3.1.1 Different air distribution designs
7.3.1.2 Different supply diffuser locations
7.3.1.3 Different return grille locations
7.3.2 Thermal comfort
7.3.2.1 Different air distribution designs
7.3.2.2 Different supply diffuser locations
7.3.2.3 Different return grille locations
7.3.3 Energy savings
7.4 Effective cooling load factors
7.5 Conclusions
Chapter 8 Conclusion and recommendations for future work
8.1 Conclusions
8.2 Limitations and future work
References