| 摘要 |
FIELD: power industry.SUBSTANCE: invention relates to power engineering and can be used in the heat power plants (HPP) for utilisation of discharge low-grade heat in condensers of steam turbines of heat power plant, low-grade heat of oil supply system of bearings of the steam turbine, low-grade heat of steam of heating extraction from the steam turbine and high-grade heat of industrial steam extraction. The method of utilisation of heat energy of heat power plant includes pumping of the spent steam from the steam turbine into the condenser, pumping of condensate into the regeneration system, while the steam with heating parameters from the steam turbine extractions is supplied to the steam space of the lower and upper system heaters for condensation, and at condensation of the spent steam and heating extraction steam the utilisation of waste low-grade heat energy of steam spent in the turbine and utilisation of low-grade heat of heating extraction steam are performed. In the steam turbine the oil supply system with the oil cooler for bearings is used, while in addition the utilisation of low-grade heat of the oil supply system, waste low-grade heat energy of the spent steam, low-grade heat of the oil supply system of bearings is performed, and utilisation of low-grade heat of heating extraction steam from the steam turbine by means of the heat engine with the closed circulation circuit on according to organic Rankine cycle using the low-boiling working body which is compresses in the condensate pump, heated in the condenser, in the oil cooler, heated and evaporated in the lower network heater, heated in the upper network heater, expanded in the turbine expander and condensed in the heat exchanger condenser.EFFECT: increase of efficiency of heat power plant and decrease of heat emissions into environment.3 cl, 1 dwg |
