Lubricating system for organic fluid power plant

Details Lubricating system for organic fluid power plant Lubricating system for organic fluid power plant

1980-10-23

1982-12-14

Ostrager, Allen M.

Power plants

Motive fluid energized by externally applied heat

Having apparatus cleaning, sealing, lubricating, purging,...

60646, 184 622, F01B 3100

Patent

active

043632165

ABSTRACT:
The condensate of a closed cycle power plant that uses an organic working fluid for lubricating the bearings of the turbine is cooled to a temperature below the condenser temperature by an auxiliary cooler before being supplied to the bearings. This subcooling of the lubricating liquid increases its viscosity to a value which causes the minimum thickness of the lubricating film in the bearings to be increased significantly. By increasing the minimum film thickness, the filtering demands on the lubricating condensate are reduced and the surface finish of the journals and bearings is less critical permitting the journals and bearing to be finished by standard precision grinding techniques. In a specific embodiment of the invention, a cannister housing the turbine/generator is provided with a sump for collecting liquid working fluid which is delivered to the bearings through a cooler. Where the prime mover is coupled to a generator through a gear box, all of which are contained in the sealed cannister, the viscosity of the condensate may be increased to such a level that the cooled working fluid is adequate to lubricate the gear box itself.

REFERENCES:
patent: 3194342 (1963-04-01), Heim
patent: 3393515 (1968-07-01), Tabor et al.
patent: 3447314 (1969-06-01), Majkrzak
patent: 3831381 (1974-08-01), Swearingen
patent: 3842593 (1974-10-01), Bronicki et al.
patent: 4044561 (1977-08-01), Hohn
patent: 4137997 (1979-02-01), Ando

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