Professor Ali Cemal Benim

Name: Prof. Dr. Ali Cemal Benim

Title: Professor for Energy Technology, Düsseldorf University of Applied Sciences, Germany

Head, Center of Flow Simulation (CFS)

Presentation title:

Investigations on Cogeneration and Waste Heat Recovery via Thermoelectric Generators


A thermoelectric generator (TEG) is a semiconductor device, which achieves a direct conversion of heat in to electrical energy. The electric power produced by a TEG is strongly influenced by the applied heat sink. While a TEG is aimed at harvesting waste heat, the optimization of the efficiency of the heat sink is a key task for the design of waste heat recovery systems implementing TEG. A TEG model is proposed and implemented in an open source toolbox for field operation and manipulation (OpenFOAM) for the purpose of performing optimizations of the heat sink, using a commercially available TEG as basis. This model includes the multi-physics thermoelectric coupled effects. Conservation principles of energy and current are considered simultaneously. This includes the thermal and electric conduction, Seebeck effect, Peltier effect, Thomson effect, and Joule heating. Much attention is paid to model validation. On the one hand, different modelling aspects are validated based on the measurements from the literature. On the other hand, specialized experiments are performed on an in-house test rig, which is developed to this purpose. Within this framework, aspects are explored, which have not been investigated in detail before, including the effect of variable temperature patterns.

Based on the models, TEG applications are presented, which aim the utilization of waste heat from a forging process and cogeneration from the abundantly available heat released by biomass combustion. Optimization procedures are additionally utilized in designing the corresponding cooling systems.


Prof. Dr.-Ing. habil. Ali Cemal Benim received his B.Sc. and M.Sc. degrees in Mechanical Engineering at the Bogazici University, Istanbul, Turkey. He earned his Ph.D. degree at the University of Stuttgart, Germany, at the Institute of Process Engineering and Power Plant Technology of the Faculty of Energy Technology with degree of distinction (summa cum laude) on the topic Finite Element Modeling of Turbulent Flames.

Subsequently, he worked about seven years in the R&D department Thermal Machinery Laboratory of ABB Turbo Systems Ltd. in Baden, Switzerland. He was the manager of the group Computational Flow and Combustion Modeling.

Since 1996, he is Professor for Energy Technology at the Düsseldorf University of Applied Sciences, at the Faculty of Mechanical and Process Engineering, since 2012 leading the Center of Flow Simulation (CFS).

Prof. Benim is the Executive Editor of Progress in Computational Fluid Dynamics, the Section Editor-in-Chief of Fire, Associated Editor of Computation and has further editorial positions in a number scientific journals.


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Professor Mihri Ozkan


Professor of Electrical and Computer Engineering, University of California Riverside, USA

Climate Action Champion Professor

Fellow—the National Academy of Inventors

Fellow—the Frontier National Academy of Engineering

Fellow—the American Association of University Women

Presentation title:

Direct Air Capture of CO2 and Its Use for Synthetic Aviation Fuels: The Promise of Greener Skies


Globally, there are currently 27 Direct Air Capture (DAC) facilities that have been established. Out of these facilities, 18 have been completed, while 130 are still in the process of development. According to the International Energy Agency (IEA), all of these facilities are relatively small-scale, but together, they can remove approximately 11,000 tons of CO2 annually. DAC technology can help mitigate difficult-to-avoid annual emissions from concrete (about 8%), transportation (about 24%), the iron-steel industry (about 11%), and wildfires (about 0.8%).

In my presentation, I will discuss the current state of commercial DAC technologies and the five essential pillars of technology required in the process. These include capture technologies, energy demand, final costs, environmental impacts, and political support. I will explain the processing steps for liquid and solid carbon capture technologies and highlight their specific energy requirements. Additionally, I will delve into the capital and operational costs of DAC, including the plant power energy sources, land, and water needs. Lastly, I will discuss a possible scenario for using captured CO2, where CO2 captured from the air can be used as a climate-neutral raw material for synthetic aviation fuels.


Professor Cengız S. Ozkan


Professor of Mechanical Engineering, Materials Science and Engineering, and Chemistry

University of California Riverside, USA

Fellow—Materials Research Society (MRS)

Member—National Academy of Inventors (NAI)

Member—American Association for the Advancement of Science (AAAS)

Associate Editor—Energy Storage, WILEY

Presentation title:

Prospects in Global Vehicle Electrification Over the Next Decade


Policy makers worldwide are under pressure for achieving decarbonization towards net zero emissions by the year 2050, and maintain a global average temperature increase below 1.5C per the special report by the intergovernmental Panel on Climate Change (IPCC). Decarbonization of the global electricity sector can be achieved via deploying of a variety of technologies, ranging from renewable power sources like wind, geothermal and solar to nuclear power, and includes advances in demand response and stationary energy storage. For global vehicle electrification, two major options for decarbonized transportation include battery electric vehicles (BEV) and hydrogen fuel cell electric vehicles (FCEV). With the recent advancements in Li-ion battery (LIB) technologies, BEVs are projected to provide a substantial demand for electricity, enabled by upcoming key technologies for higher-energy and longer-life LIBs. In addition, supercapacitors can help acceleration-boosting and stabilizing electrical system output in BEVs, as well as energy capture from regenerative braking. Furthermore, the global electric car stock will expand to almost 350 million vehicles by 2030, which require battery manufacturers and mineral suppliers to reduce the risks of supply bottlenecks and prevent higher prices.

In my presentation, I will describe the current state of the art and upcoming innovative approaches for the next decade on the design and synthesis of nanostructured energy-storage materials towards enhanced reversible capacity; superior rate performance and cycling stability; superior gravimetric capacitance; and enhanced energy and power densities. Integration of nanostructured pseudocapacitive metal oxides to nano-architectured carbon templates and MXene class materials can provide superior electrochemical performance in supercapacitor applications. Single and multilayer stacked carbonaceous nano-architectures and MXene’s can be employed in LIBs and could also be useful for future applications in hydrogen storage for FCEVs. Next, I will describe most recent efforts for upcycling of polyethylene terephthalate waste and glass waste into active energy storage materials would constitute scalable approaches for deep decarbonization and the means for achieving a circular economy. Waste glass utilization could offer an environmentally-benign and energy-saving route to prepare silicon enriched anodes to boost BEV battery capacity. Finally, I will describe near future approaches for utilizing sulfur-based cathodes, which could offer further boost of battery capacity and enhance BEV performance.


Professor Abdul-Ghani Olabi

Presentation Title:

Digital Twin & Artificial Intelligent for Renewable Energy & Energy Storage Systems


Digital twins can be particularly useful in the field of renewable energy and Energy storage systems along with the AI, which are an important technology for improving energy efficiency and reducing greenhouse gas emissions. As an example, Digital twins can be highly valuable in the field of battery technology, where they can be used to simulate and optimize the performance of batteries in real-time. Battery digital twins can help to improve the efficiency and lifespan of batteries and reduce the risk of failure or safety issues. Also, Artificial Intelligence (AI) has the potential to bring several benefits to the energy sector.

Overall, digital twins and AI can play a critical role in improving the performance, efficiency, and safety of renewable energy and energy storage systems, which are becoming increasingly important in a wide range of applications. In this presentation, Digital Twin and Artificial Intelligent application will be discussed in detail for renewable energy and energy storage applications, example of different applications will be provided.


Prof Olabi is the Director of Sustainable Energy and Power Systems Research Centre at the University of Sharjah “UoS”. For the previous three years, he was the Head of Sustainable and Renewable Energy Engineering Department, before joining UOS, he was the director and founding member of the Institute of Engineering and Energy Technologies at the University of the West of Scotland. For the last 35 years, Prof Olabi worked at different national and international institutes such as; National Research Centre-Italy “CNR”, Research Centre of FIAT-Italy “CRF”, Dublin City University “DCU”, Institute of Engineering and Energy Technologies “IEET” at UWS, and Aston University.

Prof Olabi is an Academic Expert Reviewer, he acted as member and chairman for a number of accreditation panels.

Prof Olabi has supervised postgraduate research students (40 PhD) to successful completion. He has published large number of peer-reviewed papers concerning on Renewable Energy and Energy Storage Systems, particularly, hydrogen and Fuel Cell. In the last few years, Prof Olabi has patented 5 innovative projects regarding innovative generation of PEM Fuel Call and Supercapacitor.

Prof Olabi is the founder of the International Conference on Sustainable Energy and Environmental Protection SEEP,, and the International Conference on Materials Science & Smart Materials MSSM, He is the Subject Editor of the Elsevier Energy Journal, Editor in Chief of the Encyclopedia of Smart Materials (Elsevier), Editor of the Reference Module of Materials Science and Engineering (Elsevier), Editor in Chief of Renewable Energy section of Energies and board member of a few other journals. Prof Olabi has coordinated different National, EU and International Projects. He has produced different reports to the Irish Gov. regarding: Hydrogen and Fuel Cells and Solar Energy.

Professor Arif Hepbaşlı

Name: Arif Hepbasli

Title: Professor

Presentation title: Exergy Management Matrix:  Proposal and an Acrostic Approach


The International Organization for Standardization (ISO) released  ISO 50001: Energy Management Standard in June 2011, which is suitable for any organization – whatever its size, sector or geographical location.  This standard was revised in 2018 by following the same High Level Structure as other widely applied ISO standards, such as ISO 9001 and ISO 14001. So, its integration with other management systems will be easier. Exergy analysis has been considered a powerful tool in assessing the performance of any energy system or process in recent years while any exergy management system standard has not yet been issued. Different energy or environmental management matrices have been developed and proposed  in the literature to give a quick assessment of strengths and weaknesses across selected areas of energy management. This talk proposes an Exergy Management Matrix (ExMM) and deals with various possible meanings of the acrostic “ExMM” from a different perspective.

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Professor Yunus Cengel

Energy and Exergy Efficiencies of Geothermal Power Plants

Yunus Çengel

University of Nevada, Reno (USA)

The way to get more from the same resource is to increase efficiency. For this, the current state of efficiency needs to be known. There are many different definitions of efficiency. In general terms, efficiency or performance is defined as the ratio of the ‘desired output’ to ‘required input’. In this presentation, all indices related to energy and exergy efficiency in geothermal power plants are examined and different efficiencies used are systematically defined. This makes it possible to determine the performance of a geothermal power plant from different perspectives. Also, the relationships between different energy and exergy efficiencies are clarified. These efficiency definitions provide a consistent basis for performance improvement studies in geothermal power plants. The efficiency definitions given can be extended to different energy fields.

Brief Biographical Sketch

Prof. Dr. Yunus Çengel

Professor Emeritus of Mechanical Engineering

University of Nevada, Reno, NV, USA

A short paragraph:

Yunus Çengel is a Professor Emeritus at the University of Nevada, Reno, USA. He received his Ph.D. in Mechanical Engineering from North Carolina State University and served as a faculty member at the University of Nevada, Reno since 1984. He was the Director of the Industrial Assessment Center and served as a consultant in the areas of energy efficiency, renewable energy, and energy policies. Professor Çengel is the author or coauthor of several widely adopted engineering textbooks such as Thermodynamics: An Engineering Approach, Heat and Mass Transfer: Fundamentals and Applications, and Fluid Mechanics: Fundamentals and Applications, all published by McGraw-Hill.

More detailed version:

Yunus Çengel is a Professor Emeritus at the University of Nevada, Reno, USA, and the founding dean of the Faculty of Engineering at Adnan Menderes University in Aydin, Turkey. He received his Ph. D. in Mechanical Engineering from North Carolina State University in the USA. Before joining ADU in 2012, he held the position of the Dean of the Faculty of Mechanical Engineering at Yildiz Technical University and as Advisor to the President of the Scientific and Technological Research Council (TUBITAK) on international cooperation. Professor Cengel served as the assistant director and director of the Industrial Assessment Center at UNR for eight years. He also served as the advisor to several government organizations and private companies on energy efficiency, energy policies, and education reform.

Professor Çengel is the author or co-author of the widely adopted textbooks Thermodynamics: An Engineering Approach, Fundamentals of Thermal-Fluid Sciences, Heat and Mass Transfer: Fundamentals and Applications, Fluid Mechanics: Fundamentals and Applications, Differential Equations for Scientists and Engineers, Fundamentals and Applications of Renewable Energy, and Energy Efficiency and Management for Engineers, all published by McGraw-Hill. Some of his textbooks have been translated into Chinese, Japanese, Korean, Thai, Spanish, Portuguese, Turkish, Italian, Greek, and French.

Dr. Çengel has delivered several keynote and invited lectures at technical conferences and academic institutions. He is the recipient of several outstanding teacher awards, and he has received the ASEE Meriam/Wiley Distinguished Author Award for excellence in authorship twice. In 2022, he was inducted into the Hall of Fame in Mechanical Engineering at North Carolina State University.

Professor Ibrahim Dincer


Professor Ibrahim Dincer

Professor Ibrahim Dincer is a full professor of Mechanical Engineering in Ontario Tech University, Canada. Renowned for his pioneering works in the area of sustainable energy technologies, he has authored and co-authored many books and book chapters, a number of journals and conference papers and numerous technical reports. Dr. Dincer has chaired many national and international conferences, symposia, workshops and technical meetings and has delivered many plenary, keynote and invited lectures. He is a recipient of several research, teaching and service awards, and has been actively working in the areas of hydrogen and fuel cell technologies.

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