Day 1 :
Research Director, French National Center for Scientific Research (CNRS), France
Keynote: Thermal wast recovery by thermal energy storage and by heat energy transportation over long distance
Time : 10:00 AM
Pr. Lingai LUO received her Ph.D. degree (1991) in mechanic and thermal engineering from National Polytechnic Institute of Lorraine (INPL), Nancy, France. She worked as associate professor at University of Nancy I and at INPL, France. From 2003 until 2012 she was a full professor at University of Savoie, France. She is now senior research director of French National Center for Scientific Research (CNRS) at the laboratory of thermal Science an Energy, Nantes (LTEN), France.
Pr. Luo is the author of 2 books and over 100 journal articles. She is Head of a research group of LTEN “Transfers in Fluids et Energy Systems", and was the head of laboratory of design optimization and environmental engineering (LOCIE) of CNRS and University of Savoie She was the cofounder and coordinator of Sino-French Collaboratory for Environmental and Process Engineering and is the head of its successor Sino-French Laboratory for Sustainable Energy of French CNRS and Chinese Academy of Sciences. She is also an invited professor at 5 Chinese universities/institutions, and Leuphana University at Lüneburg, Germany. Shi is Subject Editor for the topic “Energy and Buildings” of Elsevier journal "Energy" , and Member of Editorial Board of "Renewable Energy", and Associate editor of "Frontiers of Mechanical Engineering".and of Frontiers in Built Environment.
Industrial activities have a huge potential for waste heat recycling. Recovery of heat and / cold including low temperature is a very important strategy for improved energy efficiency in industry. Heat and cold recovery technologies are instrumental for intra-plant optimisation and inter-plant integration to enable cascade use of heat (or cold) between cross-sectoral plants in industral parks, and with district heating/cooling networks. In spite of its high potential, industrial waste heat is currently underutilized. This may be due, on one hand, to the technical and economic difficulties in applying conventional heat recovery methods and, on the other, the temporary or geographical mismatch between the energy released and its heat demand. Thermal energy storage is a technology which can solve the existing mismatch by recovering the themal waste and storing it for a later use. The heat energy often needs to be transported because the supply of heat is usually located apart from the demand. However, how to efficiently transport the heat energy over long distance is a real challenge. At the same time, there is a great deal of low-grade and middle-grade heat energies, such as solar energy, geothermal energy, and waste heat from industries and power plants, kept unused due to the relatively low thermal grade and long distance to the user sites. Therefore, developing efficient methods to overcome the transportation problems of the low-grade and middle-grade heat over long distance would contribute significantly to the reduction in energy consumption. The case study presented focuses on the possibility of heat waste recovery by thermal energy storage technology and by a new heat transportation concept over long distances.