Abstract models for heat engines

ZC Tu - Frontiers of Physics, 2021 - Springer
We retrospect three abstract models for heat engines which include a classic abstract model
in textbook of thermal physics, a primary abstract model for finite-time heat engines, and a …

Speed-ups to isothermality: Enhanced quantum thermal machines through control of the system-bath coupling

N Pancotti, M Scandi, MT Mitchison, M Perarnau-Llobet - Physical Review X, 2020 - APS
Isothermal transformations are minimally dissipative but slow processes, as the system
needs to remain close to thermal equilibrium along the protocol. Here, we show that …

Efficiency at maximum power of a heat engine working with a two-level atomic system

R Wang, J Wang, J He, Y Ma - Physical Review E—Statistical, Nonlinear, and …, 2013 - APS
We consider the finite-time operation of a quantum heat engine whose working substance is
composed of a two-level atomic system. The engine cycle, consisting of two quantum …

Low-dissipation engines: Microscopic construction via shortcuts to adiabaticity and isothermality, the optimal relation between power and efficiency

XH Zhao, ZN Gong, ZC Tu - Physical Review E, 2022 - APS
We construct a microscopic model of low-dissipation engines by driving a Brownian particle
in a time-dependent harmonic potential. Shortcuts to adiabaticity and shortcuts to …

Heat devices in nonlinear irreversible thermodynamics

Y Izumida, K Okuda, JMM Roco, AC Hernández - Physical Review E, 2015 - APS
We present results obtained by using nonlinear irreversible models for heat devices. In
particular, we focus on the global performance characteristics, the maximum efficiency and …

Consistency of optimizing finite-time Carnot engines with the low-dissipation model in the two-level atomic heat engine

YH Ma, CP Sun, H Dong - Communications in Theoretical …, 2021 - iopscience.iop.org
The efficiency at the maximum power (EMP) for finite-time Carnot engines established with
the low-dissipation model, relies significantly on the assumption of the inverse proportion …

Unified Approach to Power-Efficiency Trade-Off of Generic Thermal Machines

YH Ma, C Fu - arxiv preprint arxiv:2411.03849, 2024 - arxiv.org
Due to the diverse functionalities of different thermal machines, their optimization relies on a
case-by-case basis, lacking unified results. In this work, we propose a general approach to …

Universality of energy conversion efficiency for optimal tight-coupling heat engines and refrigerators

S Sheng, ZC Tu - Journal of Physics A: Mathematical and …, 2013 - iopscience.iop.org
A unified χ-criterion for heat devices (including heat engines and refrigerators), which is
defined as the product of the energy conversion efficiency and the heat absorbed per unit …

Microscopic low-dissipation heat engine via shortcuts to adiabaticity and shortcuts to isothermality

XH Zhao, ZN Gong, ZC Tu - arxiv preprint arxiv:2206.02337, 2022 - arxiv.org
We construct a microscopic model of low-dissipation engines by driving a Brownian particle
in a time-dependent harmonic potential. Shortcuts to adiabaticity and shortcuts to …

Optimized efficiency at maximum figure of merit and efficient power of power law dissipative Carnot-like heat engines

K Nilavarasi, M Ponmurugan - Journal of Statistical Mechanics …, 2021 - iopscience.iop.org
Optimized efficiency at maximum figure of merit and efficient power of power law dissipative
Carnot-like heat engines - IOPscience Skip to content IOP Science home Accessibility Help …