汽轮机循环参数及内部工作过程对热耗率的影响

Effect on Turbine Heat Rate of Minor Variations in Cycle Conditions

本文通过对汽轮机循环中几种典型小范围变工况的分析,探讨了汽轮机内部工作过程线及抽汽参数的变化对机组热耗率的影响。计算表明,当汽轮机循环中某些因素变化较大时,应在其热耗率的计算过程中,考虑对内部工作过程线进行修正,否则,将会使热耗率计算结果产生较大的误差。

By analysing several typical variations in turbine cycle, the effect on turbine heat rate due to the change on expansion line or in extraction parameters caused by these minor variations is discussed in this paper. Calculations show that if the change on expansion line or in extraction pressure is not taken into consideration, a certain error in heat rate will result when the variation in cycle is relatively large.