Power plants – Motive fluid energized by externally applied heat – Noncommunicating heat transferring motive fluid system
Patent
1992-12-10
1993-12-28
Bertsch, Richard A.
Power plants
Motive fluid energized by externally applied heat
Noncommunicating heat transferring motive fluid system
60649, F01K 2304
Patent
active
052728781
ABSTRACT:
The azeotrope assisted power system is a double cycle engine with condenser at an available low temperature and which uses a refrigerant of low boiling point as working fluid, with its boiler held at an elevated constant temperature for good operating efficiency by thermal contact between the boiler and the condenser of an efficient azeotrope assisted heat pump. The efficiency of the heat pump cycle is increased by the use of an azeotrope mixture of two refrigerants which shows a vapor pressure versus temperature less steep than the similar curves for the separate component refrigerants. These are closed cycles with no mixing of fluids between the cycles. The heat pump compressor draws its required power from the engine cycle, leaving some useable energy. The efficiency of the engine cycle is helped by having a stable temperature in the boiler, and the over all efficiency is maintained by preheating the working fluid fed to the boiler by heat exchange with condensate leaving the condenser of the heat pump. The combined system allows the use of lower temperature heat to produce power.
REFERENCES:
patent: 1982745 (1934-12-01), Koenemann
patent: 3218802 (1965-11-01), Sawle
patent: 3258925 (1966-07-01), Barthelemy
patent: 3822554 (1974-07-01), Kelly
patent: 5027602 (1991-07-01), Glen et al.
patent: 5209065 (1993-05-01), Sakata
Bertsch Richard A.
Sgantzos Mark
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