Building off a design invented and patented nearly 207 years ago by Robert Stirling, Qnergy’s Free Piston Stirling Engine is revolutionizing the capture of one of the most harmful pollutants out there ...

STIRLING VAULT100™ upright ULT features next-level temperature uniformity, energy efficiency and predictive diagnostics with improved free-piston engine and cabinet design. Replacing the company's ...

We all know how a conventional internal combustion engine works, with a piston and a crankshaft. But that’s by no means the only way to make an engine, and one of the slightly more unusual ...

Sandia National Laboratory led by Sandia researcher Peter Van Blarigan that has been testing physical components of free-piston engines which could be 50% efficient. This is about twice as good as ...