Work Output and Efficiency at Maximum Power of Linear Irreversible Heat Engines Operating with a Finite-Sized Heat Source
Work Output and Efficiency at Maximum Power of Linear Irreversible Heat Engines Operating with a Finite-Sized Heat Source
复制标题
DOI：
10.1103/physrevlett.112.180603
复制
发表时间：
2014-05-08
影响因子：
8.6
通讯作者：
Okuda, Koji
中科院分区：
文献类型：
--
作者：
Izumida, Yuki;Okuda, Koji
我们制定的工作输出和效率的线性不可逆热机之间的有限大小的热热源和无限大小的冷热源，直到整个系统达到最终的热平衡状态与均匀的温度。证明了在紧耦合条件下，热机在最大功率下工作时，无热漏，输出功仅为（火用）的一半，即从热源中提取的最大可用功。因此，相应的效率也是其准静态对应物的一半。
We formulate the work output and efficiency for linear irreversible heat engines working between a finite-sized hot heat source and an infinite-sized cold heat reservoir until the total system reaches the final thermal equilibrium state with a uniform temperature. We prove that when the heat engines operate at the maximum power under the tight-coupling condition without heat leakage the work output is just half of the exergy, which is known as the maximum available work extracted from a heat source. As a consequence, the corresponding efficiency is also half of its quasistatic counterpart.