用残量法预估注蒸汽燃气轮机变工况性能

Evaluation of Steam Injection Gas Turbine Off-design Performance by Use of a Residual Quantity Method

本文利用残量法对注蒸汽燃气轮机变工况性能进行了计算,给出了计算的数学模型及残量方程组。详细地论述了方程的简化及求解的方法,并与单步迭代计算进行了比较。计算结果表明,利用残量法可以大大地减少迭代过程,并且具有良好的收敛性和收敛速度,同时又使计算过程更为合理。

This paper deals with the calculation of off-design performance of a steam injection gas turbine by use of residual quantity method. A mathematical model for such a calculation and residual quantity equations are given with a detailed descri- ption of the equation simplification and solution method being presented. A comparision is made with respect to the single step iteration calculation method. The results of calculation have shown that with the use of the residual quantity method a substantial reduction in iteration procedures is possible with a satisfactory convergence and converging speed being readily attained. In addition, a more rational calculation process has been achieved.