Transcritical CO2 Heat Pump

A timely and comprehensive introduction to CO2 heat pump theory and usage
* A comprehensive introduction of CO2 application in heat pump, authored by leading scientists in the field
* CO2 is a hot topic due to concerns over global warming and the 'greenhouse effect'. Its disposal and application has attracted considerable research and governmental interest
* Explores the basic theories, devices, systems and cycles and real application designs for varying applications, ensuring comprehensive coverage of a current topic
* CO2 heat transfer has everyday applications including water heaters, air-conditioning systems, residential and commercial heating systems, and cooling systems

List of Contributors
Preface
Chapter 1 Introduction
1. 1 Background
1. 2 Fundamentals
1. 3 Applications
1. 4 A guide to this book
Chapter 2 Current development of CO2 heat pump
2. 1 Introduction
2. 2 CO2 properties
2. 3 Working principle of transcritical CO2 heat pump
2. 4 A brief history of CO2 heat pump
2. 5 CO2 cascade heat pump system
2. 6 Advanced CO2 heat pump system with an ejector
Chapter 3 Fluid Dynamics and Heat Transfer of Supercritical Carbon Dioxide Cooling
3. 1 Supercritical properties
3. 2 Supercritical heat transfer fluid mechanics
3. 3 Supercritical gas cooling experiments
3. 4 Supercritical CO2 heat transfer correlations
3. 5 Supercritical CO2 pressure drop
3. 6 Supercritical CO2 heat transfer and pressure drop with lubricants
3. 7 Summary and need for additional research
Chapter 4 Boiling flow and heat transfer of CO2 in an evaporator
4. 1 Introduction
4. 2 Boiling heat transfer of liquid CO2 in an evaporator
4. 3 Sublimation heat ransfer of dry ice-gas CO2 in an evaporator/sublimator
Chapter 5 Theoretical analysis of CO2 expansion process
5. 1 Introduction
5. 2 Thermodynamic analysis of the expansion process in transcritical CO2 cycles
5. 3 Theory of ejector-expansion devices
5. 4 Expansion work recovery devices for transcritical CO2 systems
Chapter 6 Trans-critical carbon dioxide compressors
6. 1 Introduction
6. 2 Sliding vane CO2 compressor
6. 3 Screw CO2 compressor
6. 4 CO2 rolling rotor compressor
6. 5 SCO2 scroll compressor
6. 6 SCO2 turbo-compressor
6. 7 SCO2 piston compressor
6. 8 Future trends
6. 9 Some key technical problems of CO2 compressor
6. 10 Conclusion and perspectives
Chapter 7 CO2 subcooling
7. 1 Introduction
7. 2 CO2 thermodynamic properties and approach
7. 3 Internal heat exchanger
7. 4 Dedicated mechanical subcooling
7. 5 Integrated mechanical subcooling
7. 6 Summary
Chapter 8 High temperature CO2 heat pump system and optimization
8. 1 Background
8. 2 Basic system design
8. 3 High temperature operation and key equipment
8. 4 System Optimization
8. 5 Applications and challenges
8. 6 Commercialized Products by High Temperature CO2 Heat Pump
8. 7 Summary
Chapter 9 Performance Analysis and Optimization of a CO2 Heat Pump Water Heating System
9. 1 Introduction
9. 2 System configuration
9. 3 System modeling
9. 4 Numerical solution
9. 5 Conditions for performance analysis and optimization
9. 6 Performance analysis under periodically steady state
9. 7 Performance enhancement by extracting tepid water
9. 8 Performance analysis under unsteady state
9. 9 Performance estimation under unsteady state
9. 10 Performance optimization under unsteady state
9. 11 Other issues on performance analysis and optimization
Chapter 10 Transcritical CO2 heat pump space heating
10. 1 Attempts towards the space heating used a transcritical CO2 heat pump
10. 2 Thermodynamic analysis of the subcooler based CO2 heat pump
10. 3 Comparison between the subcooler based CO2 system and the cascade cycle
10. 4 Optimal discharge pressure
10. 5 Optimal medium temperature
10. 6 Conclusion and prospect
References