2022 Horizons Symposium

Baltimore, Maryland, USA • April 21 – 22, 2022

Novel Thermal Technologies for Enhanced Air- and Process-Side Performance of CPI-Relevant Heat Exchangers

Ari glezer, phd

Ari Glezer, PhD
Professor and Woodruff Thermal Systems Chair
George W. Woodruff School of Mechanical Engineering
Georgia Institute of Technology

Ari Glezer is holder of the George W. Woodruff Chair in Thermal Systems and a Professor the Woodruff School of Mechanical Engineering at Georgia Institute of Technology where he moved in 1992 from the Aerospace and Mechanical Engineering Department at the University of Arizona. Before he became a member of the faculty at the University of Arizona in 1984, Professor Glezer worked as a senior research engineer at the Aircraft Division of Northrop Corporation, and was a Research Fellow in the Faculty of Engineering at Tel Aviv University. Professor Glezer received his B.S. in Mechanical Engineering from Tel Aviv University in 1974, and his M.S. and Ph.D. in Aeronautics from the California Institute of Technology in 1975 and 1981, respectively. Professor Glezer is a Fellow of the American Physical Society and of the American Society of Mechanical Engineers.

Professor Glezer’s research interests are in the area of manipulation and control of shear flows with particular emphasis on flow control in aerodynamic applications and heat transfer processes, novel thermal management techniques, small-scale mixing and in non-reacting and reacting flows, and heat recovery in environment and industrial applications. Professor Glezer’s work has been supported by AFOSR, ARO, ARPA-E, DARPA, DOE, NSF, NASA, and ONR. Industrial sponsors have included Boeing, Intel, Honeywell, IBM, Novartis, and United technologies.

Arne j pearlstein, phd

Arne J. Pearlstein, PhD
Professor of Mechanical Science and Engineering
University of Illinois at Urbana-Champaign

Arne Pearlstein received his BS (1977), MS (1977), and PhD (1983) in engineering at UCLA. His research, primarily in fluid mechanics and heat and mass transfer and focusing on theoretical and computational studies of flow stability and transition, has been published in over 40 different scientific journals, and has been supported by the National Science Foundation, Air Force Office of Scientific Research, Department of Energy, Office of Naval Research, NASA, National Institute of Standards and Technology, US Department of Agriculture, and several corporations. He is a named inventor on one issued US patent, and on several pending applications. He is a recipient of the (U.S.) Presidential Young Investigator Award, and is a Fellow of the American Physical Society.

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* This abstract was co-authored by Ari Glezer (Georgia Institute of Technology) and Arne J. Pearlstein (University of Illinois at Urbana-Champaign).

As the chemical and process industries continue to reduce energy consumption and capital costs in every process, new approaches are needed to improve the efficiency of heat exchangers, or reduce their initial cost, footprint, and operating costs.

This presentation focuses on three such technologies. On the air side, we discuss how aeroelastically-driven flutter of flexible "reeds" installed between fins in a plate-fin exchanger can considerably enhance heat transfer, with increases in the pressure drop that are sufficiently small for the approach to be economically attractive in applications. On the two-phase process side, we discuss how ultrasonic transducers can accelerate condensation, and hence reduce the size of a condenser needed to reduce the quality of a liquid/vapor mixture. We also show how-frequency Helmholtz resonance can be used to enhance condensation within the tubes of an air or liquid-cooled heat exchanger.

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