| 摘要 |
In a method and apparatus for driving an electrical power plant by the combined operation of a gas turbine 8 and a steam turbine 11, combustion air fed to the gas turbine 8 is cooled in a cooler 2 after passing through a first stage compressor 1 by means of condensate supplied to the cooler 2 from a condenser 17 of the turbine 11 by a pump 18. After passing through a second stage compressor 3, the combustion air is preheated in a heat exchanger 4 by a steam lead from the steam turbine 11 and is then further heated to a much higher temperature in a heat exchanger 5 by means of a heat carrying liquid, for example liquid sodium, which is itself heated in heat exchangers 10 and 35 by flue gas from a steam generator 9, which supplies steam to the steam turbine 11 and by flue gas from the gas turbine 8. The liquid sodium has a low pressure at very high temperatures and accordingly enables heat to be transferred at high temperatures, for example temperatures of more than 800 DEG C. |
