| 摘要 |
FIELD: power industry.SUBSTANCE: invention can be used at thermal power plants (TPP) for utilisation of excess thermal energy generated by systems of TPP during its operation. Utilisation of low-potential steam heat of heating extractions and low-potential heat of an oil supply system of bearings of a steam turbine is performed. The above utilisation processes are performed by means of a thermal engine with a closed circulation circuit, which operates as per a Rankine organic cycle. A low-boiling working medium circulating in the closed circuit is compressed in a condensate pump of the thermal engine, heated in an oil cooler of the oil supply system of bearings of the steam turbine, heated and evaporated in a lower system water heater of the steam turbine, superheated in an upper system water heater of the steam turbine, expanded in a turbine expansion engine and condensed in a heat exchanger - condenser of the thermal engine.EFFECT: improving TPP efficiency due to additional generation of electrical power at utilisation of excess steam energy generated by TPP systems.3 cl, 1 dwg, 1 ex |
