Description
Defrosting for Air Source Heat Pump
Research, Analysis and Methods
Woodhead Publishing Series in Energy Series
Language: EnglishSubjects for Defrosting for Air Source Heat Pump:
Keywords
Thermal energy; energy efficiency; defrosting; heat pumps; air source heat pump; heating and cooling; ventilation; air conditioning; thermal insulator; hot water supply; reverse cycle defrosting; uneven defrosting; refrigerant distribution; thermal comfort; PCM-TES; non-defrosting ASHP unit; defrosting control; techno-economic performance
384 p. · 15x22.8 cm · Paperback
Description
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Defrosting for Air Source Heat Pumps: Research, Analysis and Methods presents a detailed analysis of the methods, processes and problems relating to defrosting, a necessary requirement to maintain the performance of ASHP units. Readers will gain a deeper understanding of control strategies and system design optimization methods that improve the performance and reliability of units. The book discusses the most recent experimental and numerical studies of reverse cycle defrosting and the most widely used defrosting method for ASHP. Techno-economic considerations are also presented, as is the outlook for the future.
This book is a valuable resource for research students and academics of thermal energy and mechanical engineering, especially those focusing on defrosting for ASHP, heating, ventilation and energy efficiency, as well as engineers and professionals engaged in the development and management of heat pump machinery.
1. Introduction 2. Previous Related Work - A Review 3. Uneven Defrosting on the Outdoor Coil in an ASHP 4. Modelling Study on Uneven Defrosting 5. Investigation of Effect on Uneven Defrosting Performance 6. Frosting Evenness Coefficient 7. The Influence of Refrigerant Distribution on Defrosting 8. Energy Transfer During Defrosting 9. Defrosting Control Strategy 10. Technoeconomic Performance 11. Conclusions and Future Work
Research students, engineers, academics and researchers of mechanical and thermal energy engineering, especially focusing on defrosting for ASHP, heating, ventilation, air conditioning, energy recovery, energy efficient buildings. The engineers will likely be engaged in heat pump machinery and energy efficiency.
Prof. Song has worked for over a decade on the mechanism study of heat and mass transfer coupled with flow. On the topic of frosting and defrosting for air source heat pump, he proposed a series of definitions to describe thermophysical phenomena, such as even/uneven frosting/defrosting, and frosting/defrosting evenness value. His current research interests include solidification of water droplets at different scales and (anti-/de)icing for aircraft surface, and frosting and defrosting for a multi-circuit heat exchanger in refrigeration systems. He has published 122 journal articles and participated in projects from China, Hong Kong, Singapore, Japan, and Australia, handling a total of over 17 million yuan in funding, including 12 as PI. Recently, he was selected for the World’s Top 2% Scientists 2021 (Singleyr) list.
Professor Deng Shiming obtained his PhD from London South Bank University, UK, in 1991. He has been a faculty member in the Department of Building Services Engineering at The Hong Kong Polytechnic University since October 1992. He is now a full professor, a fellow of the Hong Kong Institution of Engineers (HKIE), and a member of American Society of Heating, Refrigerating and Air Conditioning Engineers (ASHRAE). Prof Deng’s research interests include building energy efficiency, indoor thermal comfort, an
- Includes MATLAB codes that allow the reader to implement the knowledge they have acquired in their own simulations and projects
- Discusses experimental and numerical studies to provide a well-rounded analysis of technologies, methods and available systems
- Presents techno-economic considerations and a look to the future