Power plants – Motor operated by expansion and/or contraction of a unit of... – Unit of mass is a gas which is heated or cooled in one of a...
Patent
1993-05-14
1995-02-14
Look, Edward K.
Power plants
Motor operated by expansion and/or contraction of a unit of...
Unit of mass is a gas which is heated or cooled in one of a...
431353, F02G 104
Patent
active
053884094
ABSTRACT:
A Stirling engine having a cooler, regenerator and heat exchanger stacked end to end along with a working cylinder position adjacent to the heat transfer stack and connected thereto by several connecting ducts. By using more than one hot connecting duct, their bending stiffness is less as compared with a single duct being the same area as the multiple ducts, allowing thermally induced relative displacement between the elements to occur. The heat exchanger includes a plurality of axially extending tubes spaced apart from one another with a combustor positioned adjacent to the tubes such that the combustion gases flow between the tubes. The tubes are preferably flattened in the direction of the gas flow between them to increase the surface area for heat transfer. Furthermore, wire is coiled around and brazed to the tubes creating a fin for additional heat transfer. A gas flow restrictor is positioned around the heat exchanger tubes over a portion of their lengths in order to produce isothermal heating of the tubes. The combustor has a number of tangential air flow inlets which mixes air with a combustible fuel injected from a nozzle providing a highly turbulent combustion gas flow.
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Look Edward K.
Sgantzos Mark
Stirling Thermal Motors, Inc.
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