Conference Speakers

Prof. Dennis Y.C. Leung (Keynote Speaker)

Hong Kong University, Hong Kong S.A.R, China












Keynote Lecture: New development in microfluidic and paper based Al-air batteries for portable devices

Abstract: Aluminum-air (Al-air) battery has been invented for more than 50 years, which is well-known for its high energy density and excellent power output. Nevertheless, the application of this technology is still restricted to large-systems with high cost due to its complexity, while its application in portable devices is barely reported. This is because of its requirement of high-purity Al anode and complex electrolyte management, which lead to poor market competitiveness and system redundancy. Inspired by the ever-growing research on paper-based power sources, novel paper-based Al-air battery has been developed to bring this conventional technology to the enormous miniwatt market. By using cellulose paper as electrolyte channel, the whole system can be greatly simplified without the need for bulky liquid storage or active electrolyte delivery. More importantly, the restricted electrolyte transport and ion diffusion inside the porous and tortuous paper enables the direct utilization of low-purity Al (<98%) in alkaline electrolyte with specific capacity reaching more than 1700 mAhg-1. The intrinsic flexibility and printability of paper can enable the fabrication of flexible and printable Al-air batteries, which are more lightweight and versatile. This novel design exhibits a great development potential for a much smarter and more economic battery application prospect for the emerging miniwatt market such as wearable electronics, point-of-care diagnostic assays, biosensors, smart packages, etc. In this talk conventional and the newly developed novel batteries for portable devices and sensors will be introduced.

Biography: Prof. Dennis Y.C. Leung received his BEng (1982) and PhD (1988) from the Department of Mechanical Engineering at the University of Hong Kong.  He had worked with the Hongkong Electric Co., Ltd. for five years heading the air pollution section of the company before joining the University of Hong Kong in 1993. Professor Leung is now a full professor and associate head of the Department of Mechanical Engineering specializing in environmental pollution control and renewable & clean energy development. He has published more than 450 articles in this area including 280+ peer reviewed top SCI journal papers.  His current h-index is 65 and total citations are more than 23000. He is one of the top 1% highly cited scientists in the world in energy field since 2010 (Essential Science Indicators) and named as a Highly Cited Researcher by Clarivate Analytics in 2017 and 2018.  Prof. Leung has delivered more than 60 keynote and invited lectures in many conferences. 
Prof. Leung is a chartered engineer, a fellow of the IMechE and Energy Institute. He was also the Past Chairman of the Institute of Energy (HK Branch), and currently serves as an editorial board member of a number of journals including Applied Energy, Energy Conversion and Management, Applied Sciences, and Associate Editor of Progress in Energy. Prof. Leung also serves as a board member of the Hong Kong Institution of Science, chairman and member of a few committees of the HKSAR government and government’s appeal board panels related to sustainable energy and environment.

Prof. Chan Siew Hwa (Keynote Speaker)

Nanyang Technological University, Singapore










Keynote Lecture: Hydrogen Production Using Solid Oxide Electrolysis Cell

Abstract: Large quantities of hydrogen are needed in the petroleum and chemical industries. The largest application of hydrogen is in the processing of fossil fuels in oil refinery, and in the production of ammonia for fertilizer market. Traditionally, hydrogen is produced by steam methane reforming or SMR. However, unless the CO2 in SMR is captured effectively, otherwise the production of hydrogen cannot be considered as green. This talk will cover different types of electrolysis technologies, with special focus on solid oxide electrolysis cell. Due to its high operating temperatures, direct seawater electrolysis is possible and its electrical to chemical energy efficiency can be as high as 100% if not higher when waste heat recovery is available. The talk will also cover novel electrolysis technology where hydrogen and syngas are produced concurrently.  

Biography: Dr. Chan joined NTU as a Lecturer in 1991 after obtaining his PhD and subsequently working as a postdoctoral researcher at Imperial College London. He is now a Professor in the School of Mechanical and Aerospace Engineering. Prof. Chan is a Director of Maz Energy Pte Ltd, where he provides technical advices to the Board since 2004. He is also a Director of a new start-up Company, Xin Xiang (Guangzhou) Hydrogen Technologies, with a major business in manufacturing key components for PEMFC. He was a member of the Management Board of Energy Studies Institute (SGP); Advisor to Total SA (France), Horizon Energy Systems (SGP) and Wuhan Koleal (China). Prof. Chan’s research is inclined Fuel Cells and Hydrogen Technology. He was the Conference Chair of the 1st World Hydrogen Technologies Convention (WHTC) in 2005 and was also the Conference Chair of HYPOTHESIS XIII in 2018. His research has gained him a number of recognitions, such as George-Stephenson Medal from the Institution of Mechanical Engineers (UK), Scientific Achievement Award from International Association of Hydrogen Energy (USA), “The World’s Most Influential Scientific Minds 2014” (Thomson-Reuters), Nanyang Award (Research Excellence), Nanyang Award (Teaching Excellence), Nanyang Award (Innovation and Entrepreneurship), and lately “Star of Innovation Talent” from Guangzhou Government. He is also the President’s Chair in Energy, a Chair Professorship for one who contributes greatly in the field of Energy. He has received the National Day’s Medal from the President of Singapore in 2017 and 2018, respectively. He is the editorial board member of “Fuel Cells – from fundamentals to systems”, “Journal of Power Technologies”, “Energy Conversion and Management” and “International Journal of Energy Research”.

Prof. Chong Wen Tong (Invited Speaker)

University of Malaya, Malaysia

















Invited Lecture: Innovative Power-Augmentation Designs for Vertical-Axis-Wind-Turbine

Abstract: Researchers have shown a growing interest in vertical axis wind turbines (VAWTs) due to their numerous benefits especially the omni-direction feature. Situations such as low wind speed, high turbulence and frequent wind-direction changes can reduce the performance of horizontal axis wind turbines (HAWTs). Certain VAWT designs have the ability to operate well in these harsh operating conditions but they possess low power coefficient generally. In order to tackle the above mentioned problems, several power-augmentation designs are conceptualized to extract more wind energy from the on-coming winds to maximize the wind energy generation. Several compact designs that can be integrated with the existing VAWTs and the new cross-axis-wind-turbine (CAWT) are discussed. The power-augmentation-guide-vane (PAGV) can be built on top of high-rise buildings in order to provide on-site renewable power to the building. It overcomes the inferior aspect on the low wind speed by channeling and increasing the speed of the high altitude free-stream wind before it enters the VAWT at the center portion. The design improves the starting behavior of wind turbines. It is also safer to people around and reduces noise pollution. An idea on harnessing unnatural wind resources for electricity is also presented. Two vertical axis wind turbines with an enclosure are mounted above a cooling tower to recover part of the energy from the exhaust air. Guide-vanes are designed to create a venturi effect and guide the wind before it interacts with the turbine blades. Finally, the CAWT consists of three vertical blades and six horizontal blades arranged in a cross axis orientation. Initial testing showed that the maximum RPM generated by the CAWT is 166% higher than the VAWT under the same experimental conditions together with well-improved starting behavior. The CAWT is a complementary design to push the limit of wind turbine technology, creating significant opportunities for the use of offshore wind energy and can be therefore alleviating dependencies on fossil fuels.

Biography: Ir. Dr. Chong Wen Tong graduated from the Faculty of Mechanical Engineering, UTM (Mechanical-Aeronautics) and awarded the Best Student Award for his academic achievement. Dr. Chong joined the Department of Mechanical Engineering, University of Malaya (UM) after spending 10 years in various industries. Before joining UM, he was the Head of Technology and Mechanical Team in Dyson-Malaysia, and has been responsible for research, design and development works on vacuum cleaner, hand dryer and bladeless fan. He is a Chartered Engineer registered by the Engineering Council (UK). He served as the Programme Coordinator (Mechanical) for about 5 years (2011-2015) and teaches Renewable Energy at the M.Eng. level. He is the Head, UM Centre for Energy Sciences. He has secured more than RM 6 million research grants, completed 18 research projects (renewable energy & green technology) as principal investigator and successfully supervised >35 post-graduate students. He has filed 12 intellectual property rights and won the First Prize of National-Intellectual-Property-Award 2016 and WIPO Medal for Inventors (Cross-Axis-Wind-Turbine). Dr. Chong has won more than 25 invention and innovation awards. He is the Editorial Board Member of the International Journal of Energy Research and International Journal of Precision Engineering and Manufacturing-Green Technology. He has co-authored >110 ISI technical articles (h-index = 30). He is also the recipient of the UM Excellence Award 2016, Excellent Lecturer (Science & Technology). He is the Conference Chair of International Conference on Sustainable Energy and Green Technology. He won the Second Place in the Royal Academy of Engineering’s Leaders in Innovation Fellowships – Final Pitch Session 2016/17. In 2018, Dr. Chong was awarded the WSSET Innovation Award (Renewable Energy Systems) and conferred with the Darjah Ahli Mahkota Perlis awardby The Raja of Perlis. Dr. Chong was selected for the 2019 Top Research Scientists Malaysia by the Academy of Sciences Malaysia.