Results 11 to 20 of about 55,114 (243)
Onsager coefficients of a finite-time Carnot cycle [PDF]
Physical Review E, 2009 We study a finite-time Carnot cycle of a weakly interacting gas which we can regard as a nearly ideal gas in the limit of $T_\mathrm{h}-T_\mathrm{c}\to 0$ where $T_\mathrm{h}$ and $T_\mathrm{c}$ are the temperatures of the hot and cold heat reservoirs, respectively.
Izumida, Yuki, Okuda, Koji
arxiv +8 more sources
Identifying student difficulties with entropy, heat engines, and the Carnot cycle [PDF]
Physical Review Special Topics. Physics Education Research, 2015 [This paper is part of the Focused Collection on Upper Division Physics Courses.] We report on several specific student difficulties regarding the second law of thermodynamics in the context of heat engines within upper-division undergraduate thermal ...
Trevor I. Smith +3 more
doaj +8 more sources
Economic Cycles of Carnot Type [PDF]
Entropy, 2021 Originally, the Carnot cycle was a theoretical thermodynamic cycle that provided an upper limit on the efficiency that any classical thermodynamic engine can achieve during the conversion of heat into work, or conversely, the efficiency of a ...
Constantin Udriste +2 more
doaj +4 more sources
The Carnot Cycle and Heat Engine Fundamentals and Applications II [PDF]
Entropy, 2022 This editorial introduces the second Special Issue entitled “Carnot Cycle and Heat Engine Fundamentals and Applications II” https://www [...]
Michel Feidt
doaj +2 more sources
Compatibility of Carnot efficiency with finite power in an underdamped Brownian Carnot cycle in small temperature-difference regime [PDF]
Phys. Rev. E 103, 042125 (2021), 2020 We study the possibility of achieving the Carnot efficiency in a finite-power underdamped Brownian Carnot cycle. Recently, it was reported that the Carnot efficiency is achievable in a general class of finite-power Carnot cycles in the vanishing limit of the relaxation times. Thus, it may be interesting to clarify how the efficiency and power depend on
Izumida, Yuki +2 more
arxiv +5 more sources
Nature Physics (2016) 12, 67 - 70, 2014 The Carnot cycle imposes a fundamental upper limit to the efficiency of a macroscopic motor operating between two thermal baths. However, this bound needs to be reinterpreted at microscopic scales, where molecular bio-motors and some artificial micro-engines operate. As described by stochastic thermodynamics, energy transfers in microscopic systems are
A Bérut +38 more
arxiv +6 more sources
Molecular kinetic analysis of a finite-time Carnot cycle [PDF]
, 2008 We study the efficiency at the maximal power $\eta_\mathrm{max}$ of a finite-time Carnot cycle of a weakly interacting gas which we can reagard as a nearly ideal gas. In several systems interacting with the hot and cold reservoirs of the temperatures $T_\
Callen H. +5 more
core +2 more sources
Quantum Carnot cycle with inner friction [PDF]
arXiv, 2020 A single driven spin is investigated as the working substance of a six-stroke irreversible quantum Carnot cycle. The role of inner friction associated with the finite-time adiabatic transformations on the cycle efficiency and the harvested work are investigated in detail. The inner friction is found to significantly reduce the work output and the cycle
Selçuk Çakmak, Ferdi Altintas
arxiv +4 more sources
A thermodynamic cycle more efficient than an infinite set of carnot engines operating between the same temperature levels [PDF]
arXiv, 2005 A theoretical thermodynamic cycle more efficient than an infinite set of Carnot engines is presented. This result is unexpected from the point of view of classical thermodynamics.
Jose Iraides Belandria
arxiv +3 more sources
Entropy, 2021 An irreversible combined Carnot cycle model using ideal quantum gases as a working medium was studied by using finite-time thermodynamics. The combined cycle consisted of two Carnot sub-cycles in a cascade mode.
Lingen Chen, Feng Wu
exaly +3 more sources