Closed cycle external combustion engine
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United States of America Patent
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May 12, 1987
Grant Date -
N/A
app pub date -
May 7, 1986
filing date -
May 7, 1986
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An external combustion engine which utilizes an impulse or velocity compounded turbine in conjunction with a compressor to reduce input energy requirements while delivering an increased work output. The invention is characterized in the use, simultaneously, of cooling and compression, significantly to reduce the compression work requirement of current practices (which utilize interstage cooling between compression cycles). In accordance with the present invention the fluid is cooled in the compressor itself, during the compression cycle, and heat energy losses inherent in conventional cycles are reduced. The efficiency of the engine is increased significantly. An important feature of the invention is that phase change or transformation is eliminated, so that heat energy is conserved. In a second embodiment of the invention, the engine utilizes one or more impulse or velocity compounded turbines, and expansion is limited to a range in which compression is carried out with a minimization of parasitic losses. Any work sacrifice attributable to low pressure output portions of the cyclical operation is compensated for by a substantial salvage of the heat ordinarily dissipated and lost as waste in conventional cycles.
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