Power plants – Motor operated by expansion and/or contraction of a unit of...
Patent
1971-11-26
1977-01-25
Ostrager, Allen M.
Power plants
Motor operated by expansion and/or contraction of a unit of...
60517, 123 1R, F02G 102
Patent
active
040044211
ABSTRACT:
A hot gas engine is provided that supports internal combustion in a gas mixture maintained at high pressure and in a controlled temperature range. With air as the essential working fluid, an oxygen rich mixture is cycled in a semi-closed loop system supportive of combustion but nonetheless providing work in the fashion of the known Stirling cycle. The arrangement includes a high area, short path length regenerator that contributes to high work efficiency despite the use of a relatively high density working fluid. The high temperature chamber of the system includes an interior layer of self supporting permeable insulation, and confines the working fluid without significant heat loss. An air compressor-expander system is coupled to replenish air in the internal gas mixture at compatible pressures and temperatures and without imposing substantial work loads. Catalytic agents may be disposed in the system for greater burning efficiency. Novel engines thus provided achieve the efficiency inherent in the Stirling cycle, but in compact, lightweight configurations that have short starting time, fast response to throttling, and do not require either a special working fluid or any high temperature metal. The control of temperature and gas mixture generates work from thermal energy with remarkably low levels of accompanying pollutants. The capability for usage of a relatively dense gas as the working medium permits the extraction of energy from hot by-product gases.
REFERENCES:
patent: 155087 (1874-09-01), Hirsch
patent: 2463130 (1949-03-01), VAN Weenan
patent: 2508315 (1950-05-01), VAN Weenan et al.
Ketobi Associates
Ostrager Allen M.
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