Power plants – Motive fluid energized by externally applied heat – Process of power production or system operation
Patent
1977-05-09
1980-09-30
Ostrager, Allen M.
Power plants
Motive fluid energized by externally applied heat
Process of power production or system operation
60669, 60676, 415 90, 204129, F01K 1302
Patent
active
042247977
ABSTRACT:
The variable speed condensing steam turbine is a simplified and effective steam expander which is built mainly of simple, low-cost sheet metal parts and is designed to provide a variable speed/torque output range.
The turbine concept is based on the past Tesla turbine principle of equally spaced rotor discs to provide a long helical path for steam expansion with high operating efficiency and minimum friction. Unlike the cylindrical Tesla turbine this unit is in conical form with uniformly varying diameter discs used to provide a variable speed/torque power output range.
A further purpose of having a uniform conical housing and uniformly increasing diameter discs is to achieve maximum steam expansion which will lead to rapid steam condensation, or a precondensation condition for the expended steam passing through the conical turbine.
A fuel conservation feature of the condensing turbine is a provision for separating hydrogen gas from a portion of the expanded/expended steam which will be conducted to the external fuel burner of the vapor generator, as part of the complete power system.
REFERENCES:
patent: 1056338 (1913-03-01), Johnsen
patent: 1333838 (1920-03-01), Csanyi
patent: 1346292 (1920-07-01), Becklund
patent: 3616334 (1971-10-01), Aker et al.
"Make a Model Tesla Turbine", by Walter E. Burton, Sep. 1965 issue of Popular Mechanics, pp. 188-193.
Husar Stephen F.
Ostrager Allen M.
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