【摘要】 提出了滑压机组背压变化对经济性影响的两种新的计算方法，即背压变化等效热降计算法和背压变化局部热平衡法，从理论上解决了采用汽动泵的滑压运行机组背压变化对机组出力和经济性指标影响的定量计算问题。通过实例计算，验证了这两种方法的计算精度远优于目前工程上常用的曲线法，为机组的终参数节能诊断提供了新途径。更多还原

【Abstract】 Two new methods are proposed to compute the economy influence of the exhaust pressure change, its quantitative calculation is solved theoretically for the case of the initial pressure slide unit with feed water pump driven by steam turbine. According to example, the new methods are found more accurate than the present look up curve method, so new methods are provided for the energy saving diagnostics of the end parameter.更多还原