Positive and negative entropy production in an ideal-gas expansion
Positive and negative entropy production in an ideal-gas expansion
复制标题
理想气体膨胀中的正熵和负熵产生
DOI：
10.1209/epl/i2004-10508-7
复制
发表时间：
2005
期刊：
影响因子：
--
通讯作者：
J. Belandria
中科院分区：
文献类型：
--
作者：
J. Belandria
理论热力学分析表明，理想气体在装有活塞的气缸中的不可逆等温膨胀可以通过涉及同时的正熵产生和负熵产生的轨迹发生。在这些轨道下，操作比在相同的初始和最终状态之间的可逆扩展更有效。这种意外的行为可以解释为同时的正熵和负熵产生过程之间的熵耦合的结果。
A theoretical thermodynamic analysis shows that an irreversible isothermal expansion of an ideal gas in a cylinder equipped with a piston may occur through trajectories involving a simultaneous positive and negative entropy production. Under these trajectories the operation is more efficient than a reversible expansion between the same initial and final states. This unexpected behavior may be explained as a consequence of an entropy coupling between the simultaneous positive and negative entropy production processes.