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Dual-circuit thermal power plant

阅读:338发布:2022-02-07

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1. A THERMAL POWER PLANT OPERATING WITH A GASEOUS WORKING MEDIUM COMPRISING COMPRESSING MEANS IN WHICH SAID WORKING MEDIUM IS COMPRESSED FROM AN INITIAL PRESSURE TO A HIGHER PRESSURE; HEATING MEANS IN WHICH THE SOCOMPRESSED WORKING MEDIUM IS BROUGHT TO A HIGHER TEMPERATURE; AND TURBINE MEANS IN WHICH THE SO-HEATED COMPRESSED WORKING MEDIUM IS ALLOWED TO EXPAND WHILE DOING WORK; SAID HEATING MEANS COMPRISING A HEATER HAVING HEAT EXCHANGE WALLS THROUGH WHICH THE WORKING MEDIUM MAY RECEIVE HEAT FROM THE EXTERIOR AND A COMBUSTION CHAMBER IN WHICH FUEL MAY BE BURNT IN THE WORKING MEDIUM; A FLOW CONNECTION BETWEEN THE OUTLET OF SAID COMPRESSING MEANS AND THE INLET OF THE TURBINE MEANS; SAID FLOW CONNECTION HAVING TWO BRANCHES, ONE FOR LEADING THE COMPRESSED WORKING MEDIUM THROUGH SAID HEATER AND THE OTHER FOR LEADING THE COMPRESSED WORKING MEDIUM THROUGH SAID COMBUSTION CHAMBER; A FLOW CONNECTION INCLUDING A COOLER LEADING FROM THE OUTLET OF THE TURBINE MEANS TO THE INLET OF THE COMPRESSING MEANS; A FLOW CONNECTION BETWEEN THE OUTLET OF THE TURBINE MEANS AND THE ATMOSPHERE; A FLOW CONNECTION BETWEEN THE INLET OF THE COMPRESSING MEANS AND THE ATMOSPHERE; AND VALVE MEANS IN SAID FLOW CONNECTIONS ALLOWING SELECTIVELY TO OPERATE THE PLANT WITH ONE OF THE FOLLOWING CIRCUITS: (A) AN OPEN CIRCUIT IN WHICH THE INLET OF THE COMPRESSING MEANS AND THE OUTLET OF THE TURBINE MEANS ARE CONNECTED TO THE ATMOSPHERE AND THE COMPRESSED WORKING MEDIUM FLOWS THROUGH THE COMBUSTION CHAMBER, AND (B) A CLOSED CIRCUIT IN WHICH THE EXPANDED WORKING MEDIUM FLOWS FROM THE OUTLET OF THE TURBINE MEANS THROUGH SAID COOLER TO THE INLET OF THE COMPRESSING MEANS AND THE COMPRESSED WORKING MEDIUM FLOWS THROUGH SAID HEATER; AND MEANS FOR RAISING THE INLET PRESSURE OF THE COMPRESSING MEANS ABOVE ATMOSPHERIC PRESSURE WHEN THE PLANT IS OPERATED WITH THE CLOSED CIRCUIT.
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