Coefficient of performance for a low-dissipation Carnot-like refrigerator with nonadiabatic dissipation

Abstract

We study the coefficient of performance (COP) and its bounds of the Canot-like refrigerator working between two heat reservoirs at constant temperatures $T_h$ and $T_c$, under two optimization criteria $\chi$ and $\Omega$. In view of the fact that an "adiabatic" process takes finite time and is nonisentropic, the nonadiabatic dissipation and the finite time required for the "adiabatic" processes are taken into account. For given optimization criteria, we find that the lower and upper bounds of the COP are the same as the corresponding ones obtained from the previous idealized models where any adiabatic process undergoes instantaneously with constant entropy. When the dissipations of two "isothermal" and two "adiabatic" processes are symmetric, respectively, our theoretical predictions match the observed COP's of real refrigerators more closely than the ones derived in the previous models, providing a strong argument in favor of our approach.

References in corpus (6)

• Efficiency at maximum power: An analytically solvable model for stochastic heat engines
• Efficiency at maximum power of Feynman's ratchet as a heat engine
• Coefficient of performance at maximum figure of merit and its bounds for low-dissipation Carnot-like refrigerators
• Molecular kinetic analysis of a finite-time Carnot cycle
• Efficiency at maximum power of thermally coupled heat engines
• Quantum Brayton cycle with coupled systems as working substance

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