Title: Low Cost Glass-Ceramic Matrix Composites for Harsh Environment Heat Exchanger Applications
Authors: John Gangloff, Justin Alms, John Holowczak, John Needham, Paul Sheedy, Thomas Yun, Daniel Mosher John Podhiny, Brian Sullivan, James Haynes and Brian Jolly
Abstract: High-temperature, high-pressure heat exchange is a ubiquitous need in power generation, industrial components and aerospace systems, including supercritical CO2 cycles. In these applications, higher cycle temperatures and pressures provide a significant driver to overall thermal efficiency and fuel consumption as well as a challenge to metallic material capability. To enable operation in these harsh operating regimes, United Technologies Research Center (UTRC), Materials Research and Design (MR&D) and Oak Ridge National Laboratory (ORNL) are developing a high temperature, lightweight, low-cost heat exchanger technology made from a Glass-Ceramic Matrix Composite (GCMC) material system, denoted UT-16, which is capable of long operational life over a wide range of harsh environments. While this GCMC material system is broadly applicable to a variety of high temperature components, this effort focuses on the development and demonstration of a Counterflow Tube Heat Exchanger (CTHX). The CTHX geometry has been configured specifically for the GCMC material which can be fabricated orders of magnitude faster than most conventional CMCs. The as-fabricated material has extremely low porosity resulting in very low leakage rates and can also be coated with a chemically inert layer for additional protection.
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Conference: SAMPE 2020 | Virtual Series
Publication Date: 2020/06/01
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