Power plants – Motive fluid energized by externally applied heat – Process of power production or system operation
Reexamination Certificate
2006-06-01
2010-11-09
Nguyen, Hoang M (Department: 3748)
Power plants
Motive fluid energized by externally applied heat
Process of power production or system operation
C060S654000, C060S655000
Reexamination Certificate
active
07827792
ABSTRACT:
This invention reduces the fuel consumption of the modern day power plant by lowering the main steam condenser operating pressure. The main steam condenser is a heat exchanger located in the power plant steam system for condensing steam. The main steam enters the main steam condenser, flowing around the tubes with the coolant flowing thru the tubes, condensing the steam. This invention replaces the present condenser once thru cooling water system with a refrigerant cooling system. The much lower normal temperature and greater high heat absorption rate of the refrigerant, lowers the main steam condenser operating pressure much below that of the present cooling water system. The lower condenser pressure increases steam flow, extracting more energy from the steam, increasing the plant-operating efficiency. This invention combines the conventional steam cycle with the conventional refrigeration cycle. The refrigerant compressor is driven by the main steam turbine which creates the binary cycle.
REFERENCES:
patent: 2496041 (1950-01-01), Dickey
patent: 2982864 (1961-05-01), Furreboe
patent: 3943719 (1976-03-01), Terry et al.
patent: 4291536 (1981-09-01), Girard
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