一类两热源不可逆循环的有限时间热力学性能有限时间热力学￣［１～］研究的基本模型为仅考虑热阻损失的内可逆循环，且以牛顿定律系统为主要对象。本文基于一类较为普遍的导热规律ｑ∝△（Ｔ￣ｎ），研究得到存在热阻和热漏损失的不可逆热机、制冷机和热泵的统一的有限时... A class of finite-time thermodynamic properties of irreversible cycles of two heat sources The finite-time thermodynamics The basic model studied is an internally reversible cycle that takes into account only the thermal resistance loss and takes the Newton’s law system as the main object. In this paper, based on a class of the more general thermal conduction laws, we find that the irreversible heat engine, the refrigerator and the heat pump have the same finite time