| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing:
Incorporating Breakthrough Functionalities for Building Large Scale Components
|
| Presentation Title |
Additive Manufacturing (AM) of Supercritical CO<sub>2</sub> Heat Exchangers Using Laser Directed Energy Deposition (L-DED) |
| Author(s) |
Nathan Young, Jessica Garnett, Amir Shooshtari, Ji-Cheng Zhao |
| On-Site Speaker (Planned) |
Nathan Young |
| Abstract Scope |
L-DED was employed to perform AM of double-helix heat exchangers (HXs) for supercritical carbon dioxide systems. L-DED can be used to print large-scale parts at a fast speed with multi-material capabilities. An L-DED system (TruLaser 3000) with a co-axial conical powder-feeding nozzle was employed in this study to explore its capabilities in building various double helix HX structures using nickel-based superalloys Inconel 625 and Mar-M247 (CM247LC). We demonstrated the ability to print 1.3 mm walls at a 45 degree angle both on a flat plate and around a rotating rod. Such capabilities enabled AM of high efficiency heat exchangers (HXs) for supercritical CO2 turbines and concentrated solar power (CSP) systems. Iterative HX design and AM build trials allowed us to leverage the best L-DED AM capabilities to strike a balance between heat transfer efficiency and the HX cost which is predominately dictated by the AM build time. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, |