DOE – Energy R&D

Michael K. Jensen
Name: Michael K. Jensen
Title:Professor
Department Mechanical Aerospace and Nuclear Engineering
School Engineering
Center Center for Automation Technologies and Systems (CATS) Center for Flow Physics and Control (CeFPaC) Center for Fuel Cell and Hydrogen Research (CFCHR) Center for Future Energy Systems (CFES) Center for Multiphase Research
Website:http://www.eng.rpi.edu/soe/index.php/faculty/154?soeid=jensem
Bio Michael Jensen received his B.S. in Mechanical Engineering from the University of Missouri-Columbia in 1972 and his M.S. and Ph.D. degrees from Iowa State University in 1976 and 1980, respectively. He began his teaching and research career at the University of Wisconsin-Milwaukee and moved to Rensselaer in 1987. Currently, he is a Professor in the Department of Mechanical, Aerospace, and Nuclear Engineering and holds a Professional Engineers license. Among many other university activities, he has served as Associate Chair for Graduate Studies in the department, been on the executive committee of the Faculty Senate, and served as the student-elected member on the Institute-wide Promotion and Tenure Committee.

As principal investigator on 41 sponsored programs, including 19 multi-year grants from NSF, DOE, NIST, NYSERDA, and industry, and consultant to 25 industry and government organizations, Michael’s research interests have been directed toward convective single- and two-phase heat transfer and the associated fluid flows with an emphasis on these processes in heat exchangers and using enhanced heat transfer techniques. Recent research has focused on microchannel flows and thermal management of electronic systems, solar energy, and fuel cells. With his graduate students (32 MS, 18 PhD), he has performed both fundamental and applied research and has conducted both experimentally and numerically based research on a wide range of topics. Dr. Jensen has published over 180 technical papers, edited 10 volumes, 30 other assorted reports, and has published an undergraduate textbook on thermal and fluids engineering. He has two patents.

Michael has been honored as a Fellow of ASME, twice received the student-chosen Lewis T. Assini Undergraduate Teaching and Counseling Award, received the Ralph R. Teetor Award of SAE, and was awarded the RPI School of Engineering Research Excellence Award. He is active in his profession, having served or is serving on editorial boards of four international journals (Journal of Heat Transfer, Experimental Thermal and Fluid Science; Applied Thermal Engineering, Journal of Mechanical Science and Technology), recently was named as Founding Editor-in-Chief of ASME’s newest journal, Thermal Science and Engineering Applications, led the ASME Heat Transfer Division, and appointed as Alternate Delegate to Assembly for International Heat Transfer Conferences. He has been chair or co-chair of six international conferences (including the National Heat Transfer Conference) and has been invited to be on numerous scientific committees for other national and international conferences. He is an active reviewer for numerous international journals and conferences and NSF, DOE, NASA, and NYSERDA proposals.

Details
Education Ph.D. Iowa State University
Scholarly Works:
  • Christman, K. and Jensen, M.K., 2011, “Effect of Cross Flow Roughness on Solid Oxide Fuel Cells,” Journal of Fuel Cell Science and Technology, Vol. 8 / 024501-1.
  • Gathright, W., Jensen, M.K., and Lewis, D., 2011, “Phase-field model of chemical reactions with an example of a solid electrolyte gas sensor,” Electrochemistry Communications, 13 pp. 520–523.
  • Michna, G.J., Browne, E.A., Jensen, M.K., and Peles, Y., 2011. The effect of area ratio on microjet array heat transfer, International Journal of Heat and Mass Transfer, 54 (9-10), pp.1782-1790, April.
  • Basu, S., Ndaos, S., Michna, G. J., Peles, Y., and Jensen, M. K., 2011, “Flow boiling of R134a in circular microtubes. Part II: Study of critical heat flux condition,” ASME Journal of Heat and Transfer, 133(5), 051503.
  • Basu, S., Ndaos, S., Michna, G. J., Peles, Y., and Jensen, M. K., 2011, “Flow boiling of R134a in circular microtubes. Part I: Study of heat transfer characteristics,” ASME Journal of Heat and Transfer, 133(5), 051502.
  • Zhang, T.J., Wen, J.T., Julius, A., Peles, Y., and Jensen, M.K., 2011, “Stability analysis and maldistribution control of two-phase flow in parallel evaporating channels,” International Journal of Heat and Mass Transfer, submitted, March.
  • Zhang, T.J., Wen, J.T., Peles, Y., Catano, J., Zhou, R.L., Jensen, M.K., 2011, “Two-phase refrigerant flow instability analysis and active control in transient electronics cooling systems,” International Journal of Multiphase Flow, 37, pp.84-97.
  • Zhou, R.L., Zhang, T.J., Catano, J., Wen, J.T., Michna, G.J., Peles, Y., Jensen, M.K., 2010, “The steady-state modeling and optimization of a two-loop refrigeration system for high heat flux electronics cooling,” Applied Thermal Engineering, 30, pp.2347-2356.
  • Phelan, P.E., Gupta, Y., Tyagi, H., Prasher, R., Cattano, J., Michna, G., Zhou, R., Wen, J.T., Jensen, M.K., and Peles, Y., 2010, “Energy efficiency of refrigeration systems for high-heat-flux microelectronics,” Journal of Thermal Science and Engineering Applications, 2, 031004, Sep.
  • “Browne, E.A., Michna, G.J., Jensen, M.K., and Peles, Y., “Microjet Array Single-Phase and Flow Boiling Heat Transfer with R134a,” International Journal of Heat and Mass Transfer, 53 (2010) 5027–5034.
Wei Ji
Name: Wei Ji
Title:Assistant Professor
Department Mechanical Aerospace and Nuclear Engineering
School Engineering
Website:http://www.mane.rpi.edu/faculty_details.cfm?facultyID=jiw2 or http://www.rpi.edu/~jiw2
Bio

After receiving his BS degree in engineering physics from Tsinghua University at Beijing, China in 1999, Dr. Ji went on to earn a MS in the area of nuclear technology and its application from the same institution in 2002. He then came to the U.S. to enter the Ph.D. program in Nuclear Engineering at the University of Michigan, earning his MS in 2004 and Ph.D. in 2007. During this period, Dr. Ji had participated in several DOE funded projects on the research, development and demonstration of Very-high Temperature Gas-cooled Reactors, one of the promising candidates for Gen IV designs. He had been a research specialist at General Atomics and Argonne National Laboratory in 2005, working on the advanced fuel cycle designs using deep-burn gas cooled reactors.

Details
Education Ph.D. University of Michigan
Christian M. Wetzel
Name: Christian M. Wetzel
Title:Constellation Professor
Department Physics, Applied Physics & Astronomy
School Science
Center Center for Future Energy Systems (CFES) Center for Integrated Electronics (CIE) Smart Lighting Engineering Research Center (ERC)
Constellation Future Chips
Website:http://www.rpi.edu/dept/phys/faculty/profiles/wetzel.html
Bio Wetzel was a Visiting Scientist at Lawrence Berkeley National Laboratory through 1996. In 1997 he joined the High Tech Research Center at Meijo University Nagoya, Japan. In October 2000 he joined Uniroyal Optoelectronics as a Senior Epi Scientist and Green Project Manager. He was responsible for new MOCVD epi processes and developed a production process for high brightness green GaInN/GaN LEDs.

Since March 2004 he is a Future Chips Constellation Professor and Associate Professor of Physics at Rensselaer. The Constellation comprises three chaired faculty who develop new concepts for light emitting devices and optoelectronics. Dr. Wetzel's work has been published in some 110 papers that received over 1500 citations.

Research Interests
Dr. Wetzel’s research centers on the electronic band and defect structure of wide band gap semiconductor materials and devices by means of optical spectroscopy under external perturbation. Since 1993, Dr. Wetzel has focused on group-III nitrides with major contributions in the identification of the residual donor in GaN as oxygen and its DX-type behavior. In the group of Prof. Akasaki, he studied the processes of light emission in GaInN quantum wells. He demonstrated the dominance of piezoelectric polarization in the band structure and the light emission processes. At RPI he implements the concepts of piezoelectric bandstructure control to realize new concepts of high efficiency light emitting devices and solar cells. Current emphasis lies on high brightness light emitting diodes emitting in the 520 – 560 nm green spectral region.
Details
Education 1993 Dr. rer. nat. (Ph.D.), summa cum laude, Physics, Technical University Munich, Munich, Germany. 1988 Diplom (M.S.) Technical Physics, Technical University Munich, Germany. Specialization in Electronic Devices and Control Theory. 1984 Vordiplom (B.S.) Technical Physics, Technical University Munich, Munich, Germany.
Scholarly Works:
  • “Determination of Piezoelectric Fields in GaInN Strained Quantum Wells Using the Quantum-Confined Stark Effect,” T. Takeuchi, C. Wetzel, S. Yamaguchi, H. Sakai, H. Amano, I. Akasaki, Y. Kaneko, S. Nakagawa, Y. Yamaoka, and N. Yamada; Appl. Phys. Lett. 73(12), 1691-3 (1998), doi:10.1063/1.122247. “On p-Type Doping in GaN - Acceptor Binding Energies,” S. Fischer, C. Wetzel, E.E. Haller, B.K. Meyer; Appl. Phys. Lett. 67, 1298-300 (1995), doi:10.1063/1.114403. “Optical Band Gap in Ga1-xInxN (0