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Dr. Lingai Luo

Laboratoire de Thermique et Energie de Nantes, Université de Nantes, France

 

Talk Title
Integration of a Thermochemical Storage System in a Rankine Cycle Driven by Concentrated Solar Power

Talk Abstract
 

 

Increasing energy demand, environmental protection issue and national energy independence all over the world call for researches aiming at more efficient use of renewable energy such as solar energy. Among various solar energy technologies, the Concentrating Solar Power (CSP) plants are expected to play an important role in the energetic scenarios for the reduction of greenhouse gases. One of the advantages of CSP technology is the possibility of integrating thermal energy storage (TES) function, permitting the production of electricity any time when it is most needed and valuable, whether during the peak hours, night, or cloudy intervals. Although adding a TES system usually increases the investment of the CSP plant, it improves the adaptability and dispatchability of the plant.

 

Besides the sensible and latent heat storage, the thermochemical storage (TCS) is a potential solution for CSP application, for its highest storage capacity, wide accessible temperature range and long storage duration at ambient temperature. This technology is mainly based on reversible chemical reactions (e.g., gas-solid) involving absorbing or releasing a large amount of reaction heat. Beyond choosing the suitable TCS material at high temperature, the TCS system must be coupled in a proper way with the power cycle (eg. Rankine cycle) in a CSP plant. However, relatively little attention seems to be given to this integration issue. The proposition and selection of pertinent conceptions that integrate TCS system into the Rankine cycle in the CSP plant remain as one of the key issues for the actual application of TCS technology.

In this presentation, a conceptual study of TCS integration in a Rankine cycle driven by CSP is presented. Different concepts on the coupling of TCS system with the Rankine cycle in a CSP plant will be proposed. Three integration concepts are investigated in detail: thermal integration concept, mass integration concept and double turbine concept. Various aspects will be addressed, including the determination of key issues for integration, selection of reactive material, performance modelling. The theoretical overall efficiency of the system and the impacts of different scenarios and influencing factors will be determined and compared. The targeted audience for this presentation includes both researchers and industrials working on innovative TES technologies, waste heat recycling, energy savings, efficiency improvement of power plants, etc.

Short Biography

 

Dr. Lingai LUO received her Bachelor’s (1982) and Master’s (1984) degrees in thermal energy engineering from Harbin Institute of Technology, China. She received her Ph.D. degree (1991) in mechanic and thermal engineering from National Polytechnic Institute of Lorraine (INPL), Nancy, France. She worked as assistant professor (1991-1993) at INPL, as associate professor (1993-1996) at University of Nancy I, and at INPL (1996-2003). From 2003 until 2012 she was a 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 and energy engineering, Nantes (LTEN), France.

 

Dr. Luo’s research covers a wide range of topics in thermal, process and energy engineering: combustion and fluidized bed; energy balance analysis; solar refrigeration machines; separation processes; energy for buildings, etc. More recently, her research activities focus on a fundamental strategy based on thermodynamic analysis and centered on the transfer intensification and energy systems optimization. More precisely, it concerns firstly the design, fabrication, characterization, simulation and optimization of innovative fluidic, thermal and reactive components, and secondly the development of new thermo-chemical systems and processes for low-grade thermal energy transportation and valorization, and inter-seasonal solar energy storage for their applications in buildings.

 

Dr. Luo is mainly engaged in the intensification of heat and mass transfer and shape optimization in different energy components, systems and processes. She proposed a multi-scale approach for process intensification. To improve the global performance (productivity) of a process, intensification should necessarily be implemented at three scales: local scale, component scale and system scale.

Dr. Luo is the author of 2 books and about 100 journal articles. From 2007 until 2012, she 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 (1998 - 2006) and is the head of its successor Sino-French Laboratory for Sustainable Energy (2008-2014) 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. She is the subject editor of Energy Journal (Elsevier) since 2016.

 
Talk Keywords
Thermal energy storage (TES); Thermochemical; Rankine cycle; Concentrating solar power (CSP); Integration concept; Performance modelling.
 
Target Audience
Students, Post doctoral, Industry, Doctors and professors
 
Speaker-intro video
TBA 
 

The International Conference on Innovative Applied Energy (IAPE’18)