Power plants – Motive fluid energized by externally applied heat – Having condition responsive control
Patent
1978-09-15
1980-07-15
Ostrager, Allen M.
Power plants
Motive fluid energized by externally applied heat
Having condition responsive control
60655, 60692, F01K 900, F01K 2304
Patent
active
042121680
ABSTRACT:
A dry-type cooling system for condensing steam in a steam operated electric power generating plant and disposing of the heat withdrawn, by converting some of the heat to a form of power or work, such as electric power, and rejecting some of the heat to the air. The system requires a power input at relatively high ambient air temperatures, but such power consumption is offset by power produced during cooling with ambient air at lower temperatures.
The cooling system utilizes a closed loop containing a suitable refrigerant fluid. The loop contains a steam condenser in the hot-well of a steam system of an electric generating plant, and a heat exchanger in a cooling tower through which air enters at atmospheric temperature and exits at an elevated temperature. The closed loop is branched to incorporate two consecutively operable cooling cycles employing the same refrigerant fluid. One of the cooling cycles operates when the atmospheric temperature of the air is comparatively high, and the other cooling cycle operates when the atmospheric temperature of the air is comparatively low, such as below 80.degree. F. The cooling cycle operating at the higher temperatures is a power consuming cycle while the cooling cycle operating at the lower temperatures is a power generating cycle. Overall, efficiency of an electric power plant may be increased 2 to 3%. The cooling system produces as much as twelve times more power than it consumes over a yearly period. The cooling system employs no water so there is no water loss or environmental disturbance and no thermal pollution.
REFERENCES:
patent: 3820336 (1974-06-01), Schwarzenbach
patent: 3851474 (1974-12-01), Heller et al.
patent: 4037413 (1977-07-01), Heller et al.
Bouchard Craig T.
Maher James B.
Rothrock Elmer W.
Chicago Bridge & Iron Company
Ostrager Allen M.
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