Just for some clarification, hopefully;
Apparently
Infinia had previously gone by a different name:
"Stirling Technology Demonstration Convertor (TDC), a 55-watt space power Stirling engine prototype developed by Infinia Corporation (formerly Stirling Technology Corporation (STC)). It is essentially a free piston machine that generates electric power from a thermal energy input..."
https://www.researchgate.net/figure/Sch ... _238733121
Infinia then became, was acquired by or in some way partnered with
Qnergy for a relatively brief period (a few years perhaps) but was then subsequently sold or transfered over to and/or became American Superconductor Corporation. (Numerous sources, mostly press releases)
Somewhere in there ITC (Infinia Technology Corporation) spun off from Infinia as a separate entity.
All this intertwined with NASA, which provided much of the funding as well as technology assistance, Navel intelligence, the DOE and various national and international governmental and non-governmental groups, bodies, organizations, entities, players, intertwined with energy, national security, military contracts, etc. etc.
I think, basically, when people talk about a "NASA type Stirling engine" that is synonymous with the Infinia engine. At least, the same exact familiar diagrams appear to be used for both, either/or:
NASA engine:
- TDC_graphic_-_boxed.jpeg (185.07 KiB) Viewed 7718 times
https://rps.nasa.gov/news/39/high-effic ... rformance/
INFINIA engine:
- Cutaway-view-of-Infinia-Stirling-engine.png (104.01 KiB) Viewed 7718 times
https://www.researchgate.net/figure/Cut ... 572798/amp
Stirling Technology Corporation engine:
- Schematic-of-STCs-Stirling-Convertor-Courtesy-wwwnasagov (1).png (340.67 KiB) Viewed 7718 times
https://www.researchgate.net/figure/Sch ... _238733121
etc.
- animation_freepiston.gif (422.22 KiB) Viewed 7718 times