Two-stage thermal hydraulic engine for smooth energy conversion
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United States of America Patent
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Jan 16, 2018
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app pub date -
Sep 28, 2012
filing date -
Sep 30, 2011
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Abstract
A two-stage thermal hydraulic engine utilizes the expansion and contraction of a working fluid to convert heat energy to mechanical or electrical energy. The transfer of heat to and from the working fluid occurs in at least two process heat exchangers and may be aided by thin twisted strips of a thermally conductive material that are in contact with the working fluid. The engine does not require the working fluid to undergo a phase change to operate. The subsequent expansion of the working fluid is used to drive pistons contained within at least two triplex hydraulic cylinders. The pistons may be alternately and sequentially driven to pump a fluid with a laminar flow and at a constant pressure. The cylinders may include a self-lubrication system.
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