Thermal power plant incorporating subterranean cooling of condenser coolant
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United States of America Patent
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app pub date -
Mar 2, 2007
filing date -
Mar 15, 2006
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A thermal power plant is disclosed that comprises a heating system (10) that utilizes solar radiation for heating a working fluid, a turbine (11) to which, in operation, the working fluid is delivered, a condenser (13) located downstream from the turbine and arranged for condensing vapour exhausted from the turbine, and a cooling system (14) associated with the condenser. The heating system comprises a field of reflectors (17) that, during diurnal periods, are arranged (for example by pivoting) to reflect incident solar radiation to a receiver (18) for heating the working fluid. The cooling system (14) is arranged in operation of the power plant to transport a coolant fluid to which heat is transferred during vapour condensing and it comprises a subterranean heat exchanger incorporating conduits (27) through which the coolant is recirculated when cycling through the condenser. In one embodiment of the power plant the cooling system/subterranean heat exchanger (14) is positioned within ground that is located at least in part below the field of reflectors (17). Also disclosed is a method of operating a thermal power plant.
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