分层空调是指仅对高大空间的下部区域进行空调，保持一定的温湿度，而对上部区域不要求空调的空调方式。与全室空调相比，夏季可节省冷量30%左右，因而节省初投资和运行能耗。但冬季空调并不节能。

分层空调适用于高大建筑物，当建筑物高度≥10m，建筑物体积V>1万m³，空调区高度与建筑高度之比h1/H≤1/2时，这种空调才经济合理。2100433B

对于分层空调系统的设计，要求扬长避短，尽可能充分地突显出系统本身的优点优势，又尽量避免系统可能造成的通风问题。主动型分层空调系统将回风口和排风口独立布置，为系统提供更大的节能空间。因此，《分层空调系统研究与设计思考（英文版）》主要针对主动型分层空调系统进行研究，深入分析其气流流动特征及节能机理，优化系统结构实现系统优势的大化。在此基础上，《分层空调系统研究与设计思考（英文版）》致力于分层空调系统完整设计计算体系的建立，包括人体活动区域负荷及与之对应的系统送风量和系统制冷机组负荷计算方法的研发等，从而为分层空调的合理设计提供可靠的参照和依据。

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

References2100433B

《空气调节设计手册（第3版）》在第二版的基础上，增加了许多节能的新技术，如低温送风系统、温湿度独立控制空调系统、蒸发冷却空调系统等。又如空调蓄冷技术及热泵技术在第二版虽有提及，但不足以供设计计算使用，本版有了较详细的介绍，又如燃气冷热电联供分布式能源系统，也作了深入的介绍。新技术方面增加了吊顶辐射供冷系统、旋流风口送风、地板送风、置换通风、岗位空调、高大空间分层空调技术、CFD方法简介。加湿器新增加介绍了五种新型加湿器。制冷方面增加了润滑油及漩涡式制冷压缩机及冷水机组。消声增加了微穿孔板消声器及复合消声器。隔振增加了冷却塔的隔振，去掉使用较少的软木和空气弹簧隔振器。空气净化和洁净室则增加了设计步骤等内容。三甘醇除湿机由于已无产品，本版已取消。

本手册可供空调设计人员使用，亦可供空调教学、施工及管理人员参考。