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 …
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
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 …
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 …
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 …
in a time-dependent harmonic potential. Shortcuts to adiabaticity and shortcuts to …
Heat devices in nonlinear irreversible thermodynamics
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 …
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
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 …
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 …
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
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 …
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 …
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
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 …
Carnot-like heat engines - IOPscience Skip to content IOP Science home Accessibility Help …