the condensate in the form of water exiting the condenser 11 is then moved on in a loop pipeline 22 to the low pressure pre heating device 13 for this purpose a condensate pump 12 is arranged immediately after the condenser 11 closely after the condensate pump 12 some of the condensate is diverted from the loop pipeline 22 using an extraction device 6 this extraction device 6 consists of branching means which allow some of the condensate to branch off into a cooling pipeline 8 the amount of condensate to be diverted into the cooling pipeline 8 can be controlled by adjusting the operating speed of a circulation pump 7 arranged shortly after the extraction device 6 in the path of the cooling pipeline 8 when running at a high operating speed the circulation pump 7 generates a significant suction activity causing more condensate to be diverted into the cooling pipeline 8 the condensate in the cooling pipeline 8 is then moved through a generator cooling device 9 which is attached to the generator 5 the generator 5 is thereby cooled i e the thermal energy is transferred from the generator 5 to the condensate the heated up condensate is then returned into the loop pipeline 22 prior to entering the low pressure pre heating device 13 this is achieved using a return device 10 which consists of branching means similar to the extraction device 6 extracting the condensate from the loop pipeline 22 as described at a location shortly after the condensate pump 12 takes advantage of the fact that the condensate at this location has essentially the lowest temperature within the.