|About this Abstract
||MS&T21: Materials Science & Technology
||Additive Manufacturing of High and Ultra-High Temperature Ceramics and Composites: Processing, Characterization and Testing
||Additive Manufacturing of Corrosion Resistant UHTC Materials for Chloride Salt-to-sCO2 Brayton Cycle Heat Exchangers
||James Kelly, Jeffery Haslam, Lauren Finkenauer, Michael Ross, Pratanu Roy, Du Nguyen, Joshuah Stolaroff
|On-Site Speaker (Planned)
Triply periodic minimal surface (TPMS) geometries can only be fabricated by additive manufacturing methods and are of interest for their potential in heat exchangers. These TPMS topologies can provide up to 10x higher heat transfer coefficients per unit reactor volume, have smooth features that generate only a moderate pressure drop, and have superior structural stability under various loading conditions. Ceramic TPMS heat exchangers have the potential to operate at very high temperatures and pressures with increased operating efficiencies. The properties of ultra-high temperature ceramic (UHTC) materials are also favorable for heat exchangers and potentially suited to future concentrated solar power (CSP) systems based on molten salt media used to heat sCO2 in a closed-loop Brayton power cycle. Prior to establishing the most suitable UHTC materials for CSP applications, initial effort has been focused on printing TPMS substructures with binder-jet additive manufacturing and developing sintering parameters for a strategically selected UHTC.
||Planned: Other (journal publication, etc.; describe below)