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.
| Original language | English |
|---|---|
| State | Published - 2020 |
| Event | International SAMPE Conference and Exhibition 2020 - Virtual, Online Duration: Jun 1 2020 → Jun 1 2020 |
Conference
| Conference | International SAMPE Conference and Exhibition 2020 |
|---|---|
| City | Virtual, Online |
| Period | 06/1/20 → 06/1/20 |
Funding
This material is based upon work supported by the U.S. Department of Energy’s Office of Energy Efficiency and Renewable Energy (EERE) under the Advanced Manufacturing Office Award Number DE-EE0008318. This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof. Chemical Vapor Infiltration (CVI) of Silicon Carbide (SiC) is also being explored as a multifunctional surface coating to provide a chemically-inert and air-tight seal on HX surfaces. The program is being supported by the U.S. Department of Energy-Advanced Manufacturing Office (DOE-AMO) and leverages prior U.S. Department of Defense and United Technologies Corporation (UTC) investments in low-cost GCMC materials, high-effectiveness HX architectures, and chemical-resistant air-barrier seal coatings.
| Funders | Funder number |
|---|---|
| DOE-AMO | |
| U.S. Department of Energy-Advanced Manufacturing Office | |
| U.S. Department of Defense | |
| U.S. Department of Energy | |
| United Technologies | |
| Office of Energy Efficiency and Renewable Energy | DE-EE0008318 |