Universality of Efficiency at Maximum Power
نویسندگان
چکیده
منابع مشابه
Universality of efficiency at maximum power.
We investigate the efficiency of power generation by thermochemical engines. For strong coupling between the particle and heat flows and in the presence of a left-right symmetry in the system, we demonstrate that the efficiency at maximum power displays universality up to quadratic order in the deviation from equilibrium. A maser model is presented to illustrate our argument.
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The concept of Carnot efficiency is a cornerstone of thermodynamics. It states that the efficiency of a cyclic (“Carnot”) thermal engine that transforms an amount Qr of energy extracted from a heat reservoir at temperature Tr into an amount of work W is at most η = W/Qr ≤ ηc = 1−Tl/Tr, where Tl is the temperature of a second, colder reservoir. The theoretical implications of this result are mom...
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ژورنال
عنوان ژورنال: Physical Review Letters
سال: 2009
ISSN: 0031-9007,1079-7114
DOI: 10.1103/physrevlett.102.130602