Panel Session - 2 Challenges and Opportunities in Thermal ind Energy Management of Information Technology Centers

Moderator Madhusudan K. Iyengar, Ph.D., IBM Advanced Thermal Laboratory (New York, USA) E-mail: mki@us.ibm.com Panel Members Yogendra Joshi, Ph.D., Georgia Tech (Atlanta, USA) H. Ezzat Khalifa, Ph.D., Syracuse University (New York, USA) Abstract Information Technology data centers consume a large amount of electricity globally. Cooling has been found to contribute about one third of this energy use. This panel will present discussion from leading technologists and experts to inform attendees on prevalent trends, emerging technical challenges, and future research opportunities. Madhusudan K. Iyengar is a Senior Engineer at the IBM Advanced Thermal Laboratory, working on server cooling and data center energy efficiency. He has a Ph.D. in Mechanical Engineering from the University of Minnesota. He has co-authored 3 book chapters, over 75 refereed papers, and holds 40 U.S. patents.

Panel Session - 3 Two-Phase Flow Patterns in Microchannels

Moderator John R. Thome, Ph.D., Ecole Polytechnique Fédérale de Lausanne (Switzerland) E-mail: john.thome@epfl.ch Panel Members Avram Bar-Cohen, Ph.D., University of Maryland, College Park (Maryland, USA) E-mail: abc@umd.edu Srinivas Garimella, Ph.D., Georgia Institute of Technology (Georgia, USA) Izok Zun, Ph.D., University of Ljubljana (Slovenia) Abstract Two-phase flow patterns play an important role in microscale processes, influencing heat transfer, void fraction, pressure drop, critical heat flux, vapor/gas separation, etc. In particular, topics that will be discussed and debated include: What/how many principal flow patterns do we actually need to have in the microscale? How can we improve the usefulness and accuracy of flow pattern maps? Can we unify flow pattern maps for adiabatic and diabatic flows? What are the critical needs in experimental and analytical techniques for ever smaller scales? Should these maps contain more embedded information for modeling purposes? How does/should this work link up with other research areas, such as microfluidics? John R. Thome is Professor of Heat and Mass Transfer at the Swiss Federal Institute of Technology in Lausanne (EPFL), Switzerland where his primary research interests are two-phase flow and heat transfer, covering both macro- and micro-scale heat transfer. He is the author of four books and numerous publications and in 1998, he received the ASME Heat Transfer Division's Best Paper Award. In 2008, Thome received the J&E Hall Gold Medal from the U.K. Institute of Refrigeration for his extensive research contributions on refrigeration heat transfer.

Panel Session - 4 Heat Recovery in Waste/Biomass to Energy Systems

Moderators Ashwani Gupta, Ph.D., University of Maryland College Park (Maryland, USA) E-mail: skgupta@umd.edu Petr Stehlik, Ph.D., Brno University of Technology (Brno, Czech Republic) E-mail: stehlik@fme.vutbr.cz Panel Members Helmut Seifert, Ph.D., Karlsruher Institut für Technologie (Karlsruhe, Germany) David Kukulka, Ph.D., Buffalo State-SUNY (New York, USA) Qiuwang Wang, Ph.D., Xi'an Jiaotong University (Shaanxi, P.R. China) Abstract Energy recovery in thermal processing of waste and biomass (renewable energy sources) plays an important role since it contributes to enhanced efficiency of the available resources. This panel will provide the participants with an opportunity to discuss energy conversion and utilization, efficient heat recovery systems, up to date heat exchange equipment, problems of fouling, possibilities of "compactness" and "enhancement" and the pitfalls of their application in this area. Petr Stechlik is is Professor and a Director of the Institute of Process and Environmental Engineering at Brno University of Technology in the Czech Republic, and a director of research and development of a certified engineering and contracting company. He also currently holds the position of Vice President of the Czech Society of Chemical Engineers. His research and development as well as application activities are aimed at waste and biomass processing, waste to energy systems, applied heat transfer, energy saving and environmental protection.

Ashwani Gupta is Distinguished University Professor at the University of Maryland, College Park. He received his Ph.D and higher doctorate, D.Sc. from the University of Sheffield, UK. He has co-authored three books and over 450 papers. He is a Fellow of AIAA, ASME, SAE and the Institute of Energy (UK). He has received several national awards and best paper awards from ASME and AIAA. His research interests include combustion, energy conversion and efficiency, and clean alternative fuels production and utilization.

Panel Session - 5 Heat Transfer, Fluid Flow and Environmental Issues Related to Natural Refrigerants

Moderator Zahid Ayub, Ph.D., P.E. Isotherm, Inc. (Texas, USA) E-mail: zahid@iso-therm.com Panel Members Eckhard Groll, Ph.D., Purdue University (Indiana, USA) Bjorn Palm, Ph.D., KTH (Stockholm, Sweden) Bruce Badger, International Institute of Ammonia Refrigeration (Virginia, USA) Abstract This panel discussion will provide an open forum to the participants to discuss issues related to the heat transfer and fluid flow as well as the pros and cons of Natural Refrigerants. The topic is timely because of the current concerns related to global warming and ozone depletion as a result of synthetic refrigerants. There will be detailed discussion on the upcoming changes in refrigerant classification with a potential impact on US and International fire and building codes. New trends toward smaller, packaged ammonia systems using secondary coolants or expanding fluids such as carbon dioxide on the low sides will be discussed. The discussion will also cover latest research activities towards the use of carbon dioxide as a replacement for the fluorocarbon-based refrigerants in heat pumping, air conditioning, and refrigeration applications. In addition, the potential use of carbon dioxide in particular applications and the barriers that must be overcome before its acceptance will be discussed. Advances in theory and recent experimental data on low refrigerant charge systems will also be presented. Zahid Ayub, received his Ph.D. in mechanical engineering from Iowa State University and is recognized as one of the pioneers in the field of Ammonia Enhanced Heat Transfer. He has authored over 70 international journal and conference papers and currently holds six U.S. patents. In 1998, he was elected ASME Fellow and is an active member of ASHRAE (Fellow), IIAR, AIChE, IoR (UK), IIR, RETA, and Eurammon and is currently the Executive Editor of the Journal of Heat Transfer Engineering. He is a registered Professional Engineer in the States of Michigan and Texas and is Founder and Director of the Natural Fluids Refrigeration Center (GIKI, Pakistan).

Panel Session - 7 Thermal and Water Management in PEFC'S

Moderators Shawn Litster, Ph.D., Carnegie Mellon University (Pennsylvania, USA) E-mail: litster@andrew.cmu.edu Partha P. Mukherjee, Ph.D., Oak Ridge National Laboratory (Tennessee, USA) E-mail: mukherjee.pp@gmail.com or partham@lanl.gov Panel Members Nancy Garland, Ph.D., U.S. Department of Energy (Washington, D.C., USA) Brant A. Peppley, Ph.D., Queen's University (Ontario, Canada) Thomas A. Trabold, Ph.D., General Motors Fuel Cell Research (New York, USA) Chao-Yang Wang, Ph.D., Pennsylvania State University (Pennsylvania, USA) Abstract Leading researchers from academia, government and industry will discuss water and thermal management in polymer electrolyte fuel cells (PEFCs), widely considered as the 21st century clean energy conversion systems for automotive, portable and stationary power. They will share the recent advancements and discuss their visions regarding the primary challenges and path forward. Shawn Litster is an Assistant Professor in the Department of Mechanical Engineering at Carnegie Mellon University, where his group studies transport phenomena in porous electrodes, two-phase flow in PEFCs, and miniaturized fuel cells. He received his Ph.D. from Stanford University and M.A.Sc. and B.Eng. degrees from the University of Victoria.

Partha P. Mukherjee received his Ph.D. in Mechanical Engineering from Pennsylvania State University, M.S. from IIT Kanpur and B.S. from North Bengal University. His research interests include transport and materials aspects in fuel cells and batteries. He is currently a Scientist at Oak Ridge National Laboratory following his tenure as a Director's Research Fellow at Los Alamos National Laboratory.

Panel Session - 8 Heat and Mass Transfer in Human Biology

Moderator Franz-Josef Kahlen, Ph.D., University of Cape Town (South Africa) E-mail: fj.kahlen@uct.ac.za Panel Members Heidi Abrahamse, Ph.D., University of Johannesburg (South Africa) George S. Dulikravich, Ph.D., Florida International University (USA) Sarit Kumar Das, Ph.D., Indian Institute of Technology Madras (Chennai, India) Abstract This panel addresses the application of mass and heat transfer to human biological systems, in an effort to understand the balancing and driving factors present in biological systems, and the stability of such biological systems in the presence of perturbations. Franz-Josef Kahlen is a Professor with the Mechanical Engineering department at the University of Cape Town, South Africa, where his teaching and research focus on mass and heat transfer. He is the PI on biological systems as well as industrial manufacturing research projects.

Panel Session - 9 Supercritical Heat Transfer

Moderators Igor Pioro, Ph.D., University of Ontario Institute of Technology (Canada) E-mail: Igor.Pioro@uoit.ca Panel Member Derek Jackson, Ph.D., University of Manchester (U.K.) Abstract Heat Transfer (HT) at SuperCritical Pressures (SCPs) was studied very intensively in the 1950's till 1980's in relation to SC steam generators and turbines used at coal-fired thermal power plants. In the 1990's, SC HT research became attractive again due to development of SC water-cooled nuclear-reactor concepts, SC carbon dioxide thermodynamic cycles and other applications in various industries. Therefore, the panel includes various aspects of SC HT (HT regimes and correlations, etc,) in relation to the latest developments in thermal and nuclear power industries and other non-power applications. Igor Pioro M.A.Sc. (1979), Ph.D. (1983), Doctor of Technical Sciences (1992), P.Eng. (2008) is an international expert in areas of nuclear engineering (reactor thermalhydraulic, Generation IV nuclear reactor concepts); thermal sciences (boiling, forced convection including supercritical pressures); and heat engineering (two-phase thermosyphons, heat exchangers, heat-recovery systems). He is an Associate Professor and Director of Graduate Programs at the Faculty of Energy Systems and Nuclear Science, University of Ontario Institute of Technology. He is an author/co-author of 7 books, 140 papers, 26 inventions, and more than 30 major technical reports. He is also a member of the Executive Committee of the Nuclear Engineering Division of ASME, member of ANS and Associate Editor of the ASME Journal of Engineering for Gas Turbines & Power.