Y. H. Venus Lun & S. L. Dennis Tung 
Heat Pumps for Sustainable Heating and Cooling [PDF ebook] 

Sustainable Energy.- Think Green.- Sustainability in Heating and Cooling.- Air Handling Unit.- Total Energy Heat Pump.- Innovation in Heat and Cooling.- Operating Mode.- Reverse Cycle.- Configuration Option.- Energy Efficiency.- Precision Control System.- Case Study.

Dr Venus Lun received her Ph D from the University of London and is a Co-founder of Sustainable Energy Limited, based in Hong Kong Science and Technology Park. She published more than 60 articles listed in the Web of Science Core Collection. She has been invited by various global bodies (e.g., APEC, ASEAN, and the United Nations) to deliver talks at international events. She is founding director and advisor of a research center at Hong Kong Polytechnic University, and has held visiting positions as an Adjunct Professor, University of Tasmania, Australia; Erasmus Mundus Scholar (funded by the European Commission), City University of London, UK; Visiting Fellow, Curtin University, Australia; and Visiting Scientist, Nanyang Technological University, Singapore. 

Ir Dr Dennis Tung received his Doctor of Business Administration from Hong Kong Polytechnic University and is a Co-founder of Sustainable Energy Limited, a company that manufactures HVACproducts for sustainable buildings. With a strong mechanical engineering background, he is a professional engineer and registered energy assessor with substantial experience in building services engineering and heat pump manufacturing. He is a Past President (2016–2017) of ASHRAE (American Society of Heating, Refrigerating and Air-Conditioning Engineers) – Hong Kong Chapter and remains actively involved in ASHRAE’s research promotion and related activities.