efficiency of heat engine cycle

Based on the thermal cycle efficiency of small-medium-size condensing extraction turbine,a kind of power generation turbines,it was proven to be reasonable and necessary for condensing extraction turbine surviving the current energy policies in our country.

从热电联供式汽轮机之一的抽汽凝汽式中小型电站汽轮机的循环热效率着手,证明在当前国家能源政策形势下其存在的必要性与合理性;根据抽汽凝汽式汽轮机经济性与安全性的关系,重点就该类汽轮机在设计过程中面临的几大问题:调节级设计、轴向推力、低压级组与最大抽汽量等分别进行研究,根据作者多年进行抽汽凝汽式中小型电站汽轮机的设计经验,经过必要的计算与详实的数据,指出了抽汽凝汽式中小型电站汽轮机设计的一般原则:既要考虑电厂运行的热经济性,更需要从安全性的角度出发,慎重地选择汽轮机的最大抽汽量。

To counter the difficulty of traditional method,the parallel connection feed-forward network of calculation method for the actual cycle thermal efficiency of a steam turbine is proposed.

针对传统方法计算繁杂的问题,本文提出了基于双并联人工神经网络的汽轮机实际循环热效率计算方法。

Aimed at the problem that the conventional reheat steam turbine ideal cycle thermal efficiency is affected by steam turbine relative internal efficiency and it can t accurately express the thermal economics for regenerative system of steam turbine,the conventional defining method of ideal cycle thermal efficiency is improved.

针对常规的汽轮机理想循环热效率受到汽轮机本体相对内效率的影响而不能准确反映汽轮机回热系统运行热经济性的问题,对汽轮机理想循环热效率定义方法进行了改进,并对改进后的汽轮机理想循环热效率进行了分析。

Firstly, the disadvantageous of ideal cycle thermal efficiency as the index of regeneration .

文中首先分析了理想循环热效率作为回热系统热经济性评价指标存在的缺陷,并对理想循环热效率的定义进行了改进,指出改进的理想循环热效率能有效地评价热力系统的热经济性。