First, it seems that the engines might be practical—we will get to what that means in a bit—even though they use the same set of thermal operations as a Carnot engine. Cyclic heat engines seem ...

The efficiency also tends to decrease, because it requires large temperature differences as given by the famous Carnot heat-engine equations. For these reasons, liquid- or gas-driven heat engines ...

The black dotted line shows the generalized Carnot limit for an engine interacting with a hot squeezed thermal bath. The results shown are performed at a temperature ratio of 0.88. Arxiv – Nanoscale ...

Such a nano-heat engine could be far more efficient than, ... E. Lutz. Nanoscale Heat Engine Beyond the Carnot Limit. Physical Review Letters, 2014; 112 (3) DOI: 10.1103/PhysRevLett.112.030602; ...

Such heat engines typically operate at 30-40 percent efficiency, such that ~ 15 TW of heat is lost to the environment To be competitive compared to current engines and refrigerators (efficiency 30-40 ...

Engineers have reported on the development of a microscopic motor operating between two thermal baths, that is, a micro Carnot engine. In a recent study published in Nature Physics, ICFO ...

More information: J. Roßnagel, et al. "Nanoscale Heat Engine Beyond the Carnot Limit." Physical Review Letters. DOI: 10.1103/PhysRevLett.112.030602. Also available at arXiv:1308.5935 [quant-ph] ...

It was a part of his theory on heat engines. In 1824, French engineer Nicolas Leonard Sadi Carnot – known as the father of thermodynamics – proposed what is known as the Carnot engine, ...

Stirling engines, named after the Scottish inventor who created them in 1816, offer the highest theoretical efficiency of any heat engine—the same as the Carnot efficiency.