Thermal power plant with closed circuit of a gaseous working medium and an open gas-turbine plant

Claim 1

IN COMBINATION A THERMAL POWER PLANT OPERATING WITH A CLOSED CIRCUIT OF A GASEOUS WORKING MEDIUM COMPRISING COMPRESSING MEANS IN WHICH SAID WORKING MEDIUM IS BROUGHT TO A HIGH PRESSURE; A HEATER INCLUDING HEAT EXCHANGE WALLS THROUGH WHICH THE HIGH-PRESSURE MEDIUM IS HEATED BY COMBUSTION OF FUEL; FIRST TURBINE MEANS IN WHICH THE SO-HEATED WORKING MEDIUM IS ALLOWED TO EXPAND WHILE DOING WORK; COOLING MEANS FOR THE SO-EXPANDED WORKING MEDIUM; AND FLOW CONNECTIONS CONNECTING SAID COMPRESSING MEANS, SAID HEATER, SAID FIRST TURBINE MEANS AND SAID COOLING MEANS TO DEFINE THE SAID CLOSED CIRCUIT FOR THE WORKING MEDIUM; SAID FIRST TURBINE MEANS COMPRISING A FIRST TURBINE CONNECTED TO DRIVE SAID COMPRESSING MEANS AND A USEFUL POWER TURBINE RUNNING AT A SPEED INDEPENDENT OF SAID TURBINE WHICH DRIVES THE COMPRESSING MEANS; AND AN OPEN GAS TURBINE PLANT COMPRISING A COMPRESSOR CONNECTED WITH SAID HEATER SO AS TO SUPPLY COMBUSTION AIR TO THE FUEL TO BE BURNT AND TO SUPERCHARGE SAID HEATER; SECOND TURBINE MEANS CONNECTED WITH SAID HEATER SO AS TO ALLOW THE COMBUSTION GASES TO EXPAND WHILE DOING WORK; SAID SECOND TURBINE MEANS COMPRISING A TURBINE CONNECTED TO DRIVE SAID COMBUSTION AIR COMPRESSOR AND A FURTHER TURBINE MECHANICALLY INDEPENDENT OF SAID USEFUL POWER TURBINE AND OF SAID TURBINE WHICH DRIVES THE COMBUSTION AIR COMPRESSOR, BUT DRIVINGLY CONNECTED WITH THE COMPRESSING MEANS OF THE CLOSED CIRCUIT.