Abstract We investigate the thermodynamical properties of charged torus-like black holes and take it as working substance to study heat engines. In extended phase space, by interpreting cosmological constant thermodynamic pressure, we derive quantities first law hole thermodynamics obtain equation state. Then, calculate efficiency engine in Carnot cycle well rectangular cycle, how changes with ...

We derive the statistics of the efficiency under the assumption that thermodynamic fluxes fluctuate with normal law, parametrizing it in terms of time, macroscopic efficiency, and a coupling parameter ζ. It has a peculiar behavior: no moments, one sub-, and one super-Carnot maxima corresponding to reverse operating regimes (engine or pump), the most probable efficiency decreasing in time. The l...

Despite the remarkable success of Carnot’s heat engine cycle in founding discipline thermodynamics two centuries ago, false viewpoints his use caloric theory linger, limiting legacy. An action revision Carnot can correct this, showing that flow powering external mechanical work is compensated internally with configurational changes thermodynamic or Gibbs potential working fluid, differing each ...

InfoSleuth is a research project at MCC that is developing and deploying new technologies for finding information available both in corporate networks and in external networks, such as networks based on the emerging National Information Infrastructure (NII). The InfoSleuth research is based on the Carnot technology that has been developed at MCC over the last 4 years. Carnot has been successful...

Quantum heat engines employ as working agents multilevel systems instead of classical gases. We show that under some conditions quantum heat engines are equivalent to a series of reservoirs at different altitudes containing balls of various weights. A cycle consists of picking up at random a ball from one reservoir and carrying it to the next, thereby performing or absorbing some work. In parti...

The objective of this study is to investigate the thermal efficiency and power production of typical models of endoreversible heat engines at the regime of minimum entropy generation rate. The study considers the Curzon-Ahlborn engine, the Novikov's engine, and the Carnot vapor cycle. The operational regimes at maximum thermal efficiency, maximum power output and minimum entropy production rate...