本书从固体吸附转轮装置出发，针对其用于建筑空气除湿时的应用场景，对采用转轮的高效空气处理流程，包括单级转轮除湿系统和多级转轮除湿系统和高效冷热源系统，包括自然冷源、低品位热源，如热泵、太阳能和高品位热源，如电力、燃气、热力等的高效利用进行介绍和性能评价。

涂壤，北京科技大学教授、硕士生导师，2014年毕业于清华大学，获博士学位。主要研究方向为新型空气处理装置研发以及面向民用建筑和数据中心的高效暖通空调系统设计及机电系统智慧能源管控。负责并参与多项国家级和省部级项目，以第一作者或通讯作者身份在国内外著名学术期刊上发表论文40余篇，授权国家发明或实用新型专利10余项。人选“2022-2024”年度北京制冷学会“青年人才托举”工程，获评2022年北京科技大学“北科青年学者”。

Chapter 1 Dehumidification Mechanisms of Desiccant Wheels
1.1 Heat and moisture transfer mechanism in desiccant wheel
1.2 Properties of solid desiccants
1.2.1 Introduction of regular solid desiccants
1.2.2 Adsorption isotherms of solid desiccant materials
References
Chapter 2 Numerical Models of the Desiccant Wheel
2.1 Coupled heat and mass transfer equations
2.1.1 Working principles of desiccant wheels
2.1.2 Two-Dimensional-Double-Diffusion model
2.1.3 One-Dimensional-Double-Diffusion model
2.1.4 One-Dimensional-Non-Diffusion model
2.2 Validations of the mathematic models
2.2.1 Test bench
2.2.2 Validations
2.3 Dimensionless mathematic model
2.3.1 Dimensionless form
2.3.2 Main dimensionless criteria parameters
2.4 Prediction models of desiccant wheels
2.4.1 Value ranges of the 3 basic dimensionless numbers
2.4.2 Original data calculated from the dimensionless model
2.4.3 Prediction model using multiple regression method
2.4.4 Prediction model using artificial neural network method
References
Chapter 3 Lowering Regeneration Temperature of Desiccant Wheels
3.1 Exergy analysis of the desiccant wheel
3.1.1 Exergy balance for the rotary wheel
3.1.2 Exergy efficiency of dehumidification
3.2 Decreasing exergy destruction
3.2.1 Factors influencing heat and mass transfer exergy destruction
3.2.2 Influence of Ar and Fr on uniformity and exergy destruction
3.3 Decreasing thermal exergy obtained by the processed air
3.3.1 Factors influencing thermal exergy
3.3.2 Case studies
3.4 Conclusions
References
Chapter 4 Effects of Adsorption Isotherms and Rotation Speed on Regeneration Temperature
4.1 The equilibrium isotherms of the desiccant wheel
4.2 Air dehumidification at high and low relative humidity
4.2.1 System description
4.2.2 Air handling processes of different cases
4.3 Effects of RS, C and Wmax on treg
4.3.1 Effects of RS on treg
4.3.2 Suggested C and Wmax and the recommended RS Ranges
4.4 Discussions
4.4.1 Theoretical analysis of the effects of C for different dehumidification applications
4.4.2 Influencing factors of the recommended RS ranges
4.4.3 Case studies
4.5 Conclusions
References
Chapter 5 Irreversible Processes of Dehumidification Systems with Single Stage Desiccant Wheel
5.1 Performance analysis of a reversible DDCS
5.1.1 Introduction of the reversible DDCS
5.1.2 Performance analysis of the ideal DDCS
5.1.3 Effects of non-ideal processes on the performance of the DDCS
5.2 Performance analysis of the ventilation cycle
5.2.1 System description and performance index
5.2.2 Performance analysis of the ventilation cycle
5.2.3 Effects of wheel thickness and heat recovery efficiency
5.3 Performance improvement of the actual system
5.3.1 Avoiding over-dehumidification
5.3.2 Adopting a heat pump system in place of the electrical heater
5.3.3 Performance comparison
5.4 Conclusions
References
Chapter 6 Performance Influencing Factors of Single-Stage Desiccant Wheel Dehumidification Systems
6.1 Performance of the ventilation system
6.1.1 System description of BVS
6.1.2 Performances of BVS
6.2 Exergetic analysis of the ventilation system
6.2.1 Performance influencing factors for the ventilation system
6.2.2 Exergy analysis of BVS
6.3 Improved systems for the ventilation system
6.3.1 Avoiding over dehumidification of DW
6.3.2 Adopting the heat pump as the heating source
6.3.3 Performance comparison of the three systems
6.4 Conclusions
References
Chapter 7 Performance Analyses of an Advanced System with Single-Stage Desiccant Wheel
7.1 Methodology
7.1.1 Working principles of the proposed dehumidification systems
7.1.2 Performance evaluation indexe