Power plants – Fluid within expansible chamber heated or cooled – Special motive fluid
Patent
1988-08-29
1990-08-07
Look, Edward K.
Power plants
Fluid within expansible chamber heated or cooled
Special motive fluid
60512, 60649, 60651, 60673, 62467, 62476, 62498, F01K 2504, F25B 1500
Patent
active
049457250
ABSTRACT:
Motor apparatus which converts hydraulic energy and change of state heat energy to mechanical energy. The motor includes a main chamber divided by a piston into first and second portions. During a first half cycle or hydraulic power stroke, a valve places the first portion of the chamber in fluid communication with a source of pressurized, saturated liquid and the second portion of the chamber in fluid communication with a drain port. A switch senses the end of the hydraulic power stroke and causes the valve to move to a second position wherein the first and second portions of the chamber are placed in fluid communication with one another to form a common motor chamber and drive the piston in an expansion power stroke. Power is derived from the working fluid during the piston stroke in each direction. The motor finds particular application for energy recovery in an absorption refrigeration system.
REFERENCES:
patent: 3293881 (1966-12-01), Walker
patent: 4068476 (1978-01-01), Kelsey
patent: 4149383 (1979-04-01), Spalding
patent: 4235079 (1980-11-01), Masser
patent: 4391571 (1983-07-01), Craggs
patent: 4393653 (1983-07-01), Fischer
patent: 4759189 (1988-06-01), Stropkay et al.
patent: 4793153 (1988-12-01), Hembree et al.
Carmein David E.
Hembree Richard D.
Kapsalas George
Look Edward K.
Recovery Engineering, Inc.
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