论文标题
用不可逆的卡诺式加热发动机，用过度引导的谐波振荡器
Building an irreversible Carnot-like heat engine with an overdamped harmonic oscillator
论文作者
论文摘要
我们分析了在谐波陷阱中用胶体粒子构建的非平衡性carnot样周期，该循环陷阱浸入充当热浴的液体中。我们的分析是在过度阻尼的制度中进行的。该周期包括四个分支：两个等温过程和两个\ textit {局部}绝热。在后者中，浴缸的温度和谐波陷阱的刚度随时间变化，但平均热量始终消失。所有分支都以有限的速率扫描，因此相应的过程是不可逆的，而不是准静态的。具体而言，我们有兴趣优化加热引擎以传递最大功率并表征物理参数的相应值。最大功率的效率显示在两个热浴温度比的整个范围内非常接近Curzon-Ahlborn结合，这表明该协议的近乎最佳性。
We analyse non-equilibrium Carnot-like cycles built with a colloidal particle in a harmonic trap, which is immersed in a fluid that acts as a heat bath. Our analysis is carried out in the overdamped regime. The cycle comprises four branches: two isothermal processes and two \textit{locally} adiabatic ones. In the latter, both the temperature of the bath and the stiffness of the harmonic trap vary in time, but in such a way that the average heat vanishes for all times. All branches are swept at a finite rate and, therefore, the corresponding processes are irreversible, not quasi-static. Specifically, we are interested in optimising the heat engine to deliver the maximum power and characterising the corresponding values of the physical parameters. The efficiency at maximum power is shown to be very close to the Curzon-Ahlborn bound over the whole range of the ratio of temperatures of the two thermal baths, pointing to the near optimality of the proposed protocol.
