FIELD: energy.
SUBSTANCE: invention relates to heat engineering and can be used to increase efficiency of extraction turbines with two-stage heating of delivery water in modes with increased direct delivery water system temperature relative to nominal one. Method involves stem extraction from extraction turbine and its delivery to network water heaters, wherein steam delivery to second stage of heating is performed with its switching from two chambers of said turbine with different pressures. Switching is carried out under condition of heat flow reduction from fuel combustion at equal production of heat and electric energy, determined at heat consumption dependence diagrams to turbine from direct delivery water system temperature for both said chambers, wherein straight direct delivery water system temperature and steam flow control is performed by turning control diaphragm and steam distribution unit of turbine high pressure cylinder.
EFFECT: invention increases both efficiency and reliability of turbine blade system.
1 cl, 2 dwg
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