Power plants – Motive fluid energized by externally applied heat – Process of power production or system operation
Patent
1975-05-16
1977-01-25
Schwadron, Martin P.
Power plants
Motive fluid energized by externally applied heat
Process of power production or system operation
60657, 60677, 60690, 60692, F01K 1302
Patent
active
040044246
ABSTRACT:
Steam is removed from the steam cycle of a turbine when the back pressure on the turbine exceeds a predetermined level. Heat is then extracted from the removed steam and dissipated in a cooling tower of a cooling system for the turbine's condenser. Increased temperatures in the cooling tower augment thermal fan action, resulting in lower coolant temperatures and limiting the back pressure on the turbine. When the back pressure on the turbine decreases to an acceptable level, the steam is redirected into the steam cycle.
In a preferred embodiment, heat is extracted from steam by passing the steam through the high temperature coil of a vapor-absorption generator. The high temperature vapor formed in the generator transfers the heat to the heat dissipating surfaces of a cooling tower or into heat-exchange relationship with an exhaust coolant discharged from a steam condenser. In alternative embodiments the removed steam is passed directly through an auxiliary coil in the cooling tower or through a heat exchanger that elevates the temperature of the coolant as it is passed from the condenser to the tower.
REFERENCES:
patent: 3731488 (1973-05-01), Sasakura et al.
patent: 3820334 (1974-06-01), Heller et al.
patent: 3820336 (1974-06-01), Schwarzenbach
patent: 3851702 (1974-12-01), Heller et al.
Bechtel International Corporation
Burks, Sr. H.
Schwadron Martin P.
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