Pumps – One fluid pumped by contact or entrainment with another – Liquid piston
Patent
1974-09-26
1977-03-22
Schaefer, Robert K.
Pumps
One fluid pumped by contact or entrainment with another
Liquid piston
290 53, 417330, F04B 3500, F04F 1100
Patent
active
040133796
ABSTRACT:
A wave-powered pneumatic system for producing compressed air to be used for energy storage or power generation, comprising an elongated seawall extending parallel to the shore and at a distance out from the shore, upon which an air-accumulating structure is built. The air-accumulating structure is divided by partitions into a plurality of modules, each consisting of a plurality of stacked air chambers arranged one above the other. Each of the chambers is relatively shallow in the vertical dimension, and each chamber is closed on all sides except the end facing out to sea. A plenum chamber is connected to each of the air chambers by separate ducts having check valves which allow air to flow into the plenum chamber when pressure within the duct exceeds the pressure in the plenum chamber. The plenum chamber is connected to the air storage or power generating means. Depending upon the wave height, one or more of the chambers will be filled with a solid mass of water from each wave as the latter moves toward shore. This mass of shoreward-moving water acts as a piston, driving the air trapped in the chamber toward the rear end thereof, and compressing it, the compressed air being forced out through the duct to the plenum chamber, and finally to the air-driven power generating means.
REFERENCES:
patent: 430790 (1890-06-01), Starkenberg
patent: 644869 (1900-03-01), Newell
patent: 1175287 (1916-03-01), Olmsted
patent: 2044686 (1936-06-01), Harrison
patent: 2633289 (1953-03-01), Inman
patent: 3064137 (1962-11-01), Corbett et al.
patent: 3151564 (1964-10-01), Rosenberg
patent: 3200255 (1965-08-01), Masuda
Kidder Herbert E.
Redman John W.
Schaefer Robert K.
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