Woodruff School of Mechanical Engineering

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Compact Heat Exchangers for Supercritical Carbon Dioxide Power Cycles


Dr. Vinod Narayanan


University of California, Davis -Department of Mechanical and Aerospace Engineering


Thursday, March 18, 2021 at 4:00:00 PM   Add to Calendar


Room https://gatech.bluejeans.com/888166894


Dr. Satish Kumar


Brayton cycles using supercritical carbon dioxide sCO2 as the working fluid can offer compact, high efficiency power generation solutions and are hence being considered for coupling with a variety of heat sources including solar, nuclear, and fossil. The efficiency of the sCO2 cycle depends greatly on several heat exchangers in the cycle, including the primary heat exchanger and one or more recuperators. Reduction in the size and weight of these heat exchangers is critical to lowering the capital cost. Design of such high temperature, high pressure heat exchangers requires a multidisciplinary approach that includes considerations of heat transfer and fluid flow, fabrication constraints, high temperature material strength including creep and fatigue, and cost analysis. In this talk, some potential designs for compact primary heat exchangers and recuperators for sCO2 cycles will be presented. The heat exchanger designs encompass two different manufacturing methods, namely microlamination and additive manufacturing. Challenges of primary heat exchangers relevant to solar thermal and nuclear applications, wherein the hot side is comprised of a high temperature molten salt, will be discussed.


Vinod Narayanan is a Professor in the Department of Mechanical and Aerospace Engineering at UC Davis where he also serves as the Associate Director of the UC Davis Western Cooling Efficiency Center. He earned his PhD in 2001 from Texas A&M University. Prior to moving to UC Davis in 2015, he progressed through the ranks at Oregon State University. His group has contributed substantially to literature in jet impingement heat transfer, infrared thermography applied to microscale thermal transport, passive phase-change thermal transport, and process intensification. He serves as an Associate Editor of ASME Journal of Thermal Science and Engineering Applications and is an ASME Fellow.


Seminar Link: https://gatech.bluejeans.com/888166894 Phone Dial-in +1.408.419.1715 Meeting ID: 888 166 894 - Moderator: Satish Kumar (satish.kumar@me.gatech.edu)