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Prof. S.K. Chou
National University of Singapore
"Thermal Performance of Building Envelopes for Improved Energy Efficiency "

Buildings are energy intensive, and the starting point to achieve energy efficiency is to address the thermal performance of their envelopes. In tropical climates, air-conditioned buildings in cities can account for more than 30% of the total electrical energy consumption. A typical air-conditioned building operates with a moderate temperature difference varying from about 6 to 12oC between outdoor and indoor, and air conditioning can account for more than 50% of the energy consumption of the building. In this presentation, we report on the recent effort to develop an enhanced method to credit the energy performance of buildings by accounting more precisely for the heat gain streams through the building envelope. Our study is motivated by new technology and improved fenestration insulation such as the thermally broken window frame. We developed new correlations to account for the thermal performance of improved window components and systems. The methodology enables investigations of the impact on building cooling energy arising heat flows through window components and frames. The enhanced method is incorporated into the existing Envelope Thermal Transfer Value (ETTV) and the Residential Envelope Transmittance Value (RETV) formulations, which are necessary criteria in the Singapore Green Mark mandatory certification scheme. With the enhanced ETTV and RETV criteria, the refreshed envelope energy standard offers opportunities and better incentives for the adoption of “green” and energy efficient technology towards achieving sustainable building energy performance.

S.K. Chou is a professor at the Department of Mechanical Engineering, National University of Singapore. Between 1992 and 2007, he held consecutive appointments as Director, Industry and Technology Relations Office, Head of the Department of Mechanical Engineering, and Vice-Dean (External and Industry Relations) of the Faculty of Engineering. Professor Chou was the founding executive director of the Energy Studies Institute, established in 2007 at NUS, where he held a joint appointment till June 2017. S.K. Chou is Honorary Fellow and Past President of the Institution of Engineers (IES), Singapore, and a Fellow of the American Society of Heating, Refrigerating and Air-Conditioning Engineers. He is a Fellow of the Singapore Academy of Engineering, the ASEAN Academy of Engineering and Technology, the Energy Institute, UK, and the ASEAN Federation of Engineering Organisations. He is Chairman of the Technical Evaluation Panel on the Grant for Energy Efficiency Technology (GREET) of the National Environment Agency, Singapore. He is the national focal point on the Board of Advisers, ASEAN Committee on Science and Technology (COST). He is presently an Editor of the Elsevier journal, Applied Energy, and serves on the editorial boards of a number of other energy related journals. His research interests are in energy performance of buildings, clean and renewable energy, micro combustion, micro power generation and propulsion systems, and energy efficiency.

Prof. Hongguang Jin
Academician of Chinese Academy of Sciences
"Complementary Energy Systems for Low Carbon City "

Professor Hongguang Jin is Academician of Chinese Academy of Sciences, Professor and Director of Laboratory of Distributed Energy System and Renewable Energy, Institute of Engineering Thermophysics, Chinese Academy of Sciences. He serves as Director General of Chinese Society of Engineering Thermophysics. He received his Ph.D. degree from Tokyo Institute of Technology, Japan in 1994. Prof. Jin’s research focuses on thermophysics, chemical engineering, energy systems analysis, polygeneration system, demonstration of CCHP, and solar thermal technologies. He is one of the two principal inventors of Chemical-looping Combustion, a revolutionary approach for fossil fuels conversion with near-zero energy penalty of CO2 capture. He has published more than 300 papers and serves as subject editor of Applied Energy. He is the recipient of numerous awards, such as the second-rank National Natural Science Award of China in 2009, and the Ho Leung Ho Li Science and Technology Progress Award in 2011.

Jian Jiao
Beijing Engineering Research Center of Building Energy Efficiency and Urban Ecology
"Several key issues about the Green Building "

Based on the analysis of green buildings with more than 30 years development, discuss several key issues about the Green Building: 1, By reconsidering the substance,redefine the concept and scope of the Green Building.Summarize the main items and coping strategies. 2,In view of the problems in the new period, conclude the core plates of the Green Building. 3, Analyze the misunderstanding and problems of the value oriented practice of the Green Building. 4, Analyze the relationship between the development of green buildings and the overall development direction of architecture. It is hoped that by thinking about the above key issues, we can find new ideas for solving the problems of green building in present-days.

Ms. Jiao received her master’s degree of Architect from Architectural Department of Tianjin University. She is a professorate senior engineer, a national first-class registered architect. She mainly focuses on the directions of sustainable city and buildings, including eco-city, green building, accessibility design etc. She has carried out and completed a number of design and research projects, published a number of articles and papers, won multiple design and research awards at national and provincial level.


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