然后，基于改进的理想循环热效率，提出了等效热降法的改进算法。

Then based on the improved ideal cycle heat efficiency, the improved equivalent enthalpy drop method is given.

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比较结果表明，除等效热降法外，热力学方法和汽轮机原理方法的计算误差都很大。

The result shows that the error of thermodynamics method and steam turbine theory method are very big except the equivalent enthalpy drop method.

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因此，建议工程上可以采用等效热降法计算背压变化时汽轮发电机组电功率的变化量。

So the equivalent enthalpy drop method is suggested to calculate the change of electric power with back pressure changing in engineering.

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