热漏对热机最佳功率与最佳效率特性的影响  

The Influence of Heat Leak on the Optimal Power Versus Optimal Efficiency Characteristics of Heat Engines

作　　者：刘峰[1] 陈文振[1] 黎浩峰[1] 

机构地区：[1]海军工程大学核能科学与工程系,武汉430033

出　　处：《汽轮机技术》2007年第3期197-199,共3页Turbine Technology

摘　　要：对于有限时间热力学,以往文献对于卡诺热机最佳效率与最佳功率间关系的分析大多只考虑了热阻和装置热漏(本文称为外热漏),而没有考虑到工质热漏(本文称为内热漏)的影响。将热漏分为外热漏和内热漏两种方式,经过分析得出了由于内热漏损失使热机存在最佳功率和最佳效率两种不同工作状态,指出了内热漏的影响不同于外热漏,也不可将内热漏简单归结于内不可逆的重要结论。Toward finite time thermodynamics, the analysis of the optimal power versus optimal efficiency of irreversible heat engine just involve the heat - resistance and device heat leak（ external heat leak） in former literature provided by some other authors. In this paper, the heat leak be divided into the device heat leak（ external heat leak） and theworking fluid heat leak （internal heat leak）, educed that the optimal power and the optimal efficiency cann＇t be reached by simultaneously, pointed out that the influence of working fluid heat leak（ internal heat leak） is different from that of device heat leak（ external heat leak） and is also different from that of other internal irreversibilities, such as friction, turbulence etc.

关 键 词：有限时间热力学 不可逆热机 热漏 

分 类 号：TK123[动力工程及工程热物理—工程热物理]