The Stirling engine has the highest theoretical efficiency of any thermal engine. It is also a relatively simple machine. Unlike other types of engines, there are no valves, and that makes the ...

The amount of potential fuel energy that's actually converted to motion is called an engine's thermal efficiency. The thermal efficiency of diesel engines has typically maxed out at around 46% ...

Nano Nuclear Energy shares rose after the company said it has contracted with Thermal Engineering International to help with NNE's nuclear microreactor. The stock was up 13%, to $41.46, on Thursday.