Power plants – Reaction motor – Motive fluid principally liquid
Patent
1975-05-22
1977-11-15
Ostrager, Allen M.
Power plants
Reaction motor
Motive fluid principally liquid
92134, 417 10, 417380, 417401, 60595, 60596, 115 11, 115 14, B63H 1106
Patent
active
040579611
ABSTRACT:
A new heat engine in which liquid moves in a tube, one end of which is closed. The tube is heated at the closed end, and the liquid oscillates along the length of the tube. When the liquid interface enters the hot section, some of the interface vaporizes, so that the pressure in the space between the interface and the end of the tube increases, and the interface is forced back into the cooler section of the tube. The vapor then condenses, the pressure falls, and the liquid moves back toward the hot end.
The longer the tube in relation to size of the hot section or "boiler," the greater the momentum of the liquid when it enters the boiler, and the higher the peak pressure ratio which is developed. High pressure ratios are essential for efficient operation. It is also generally necessary for the boiler walls to be heavy enough to "store" the heat required for one complete cycle, and to be able to reject it to the water during the very short time that the interface is within the boiler.
Embodiments using compressed air and diesel cycles are disclosed which take the place of the fluid-vapor interface by utilizing a driven piston.
REFERENCES:
patent: 550163 (1895-11-01), Durand
patent: 2795927 (1957-06-01), Huber
patent: 3170406 (1965-02-01), Robertson
patent: 3214085 (1965-10-01), Boldt
patent: 3631760 (1972-01-01), Moran
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