循环性能的第二定律分析

Analysis of Second Law of Cycling Function

运用热力学第一、二定律分析蒸汽动力循环的效率和蒸汽压缩制冷循环的制冷系数 ,得出热效率和制冷系数的上下限 ,与卡诺热机效率及卡诺制冷系数相比 ,它们更接近于工程实际。

Through the analysis of the efficiency of steam power cycle and the refrigeration cofficiency of steam compression refrigeration cycle by applying the second law of themodynamics .The upper and lower limit of heat efficiency and refrigeration coefficient are obtained. Compared with Carno 's heat efficiency and Carno's referigeration coefficient ,they are closer to practice of engineering.