Brayton screw engine with brayton bottoming system
First Claim
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1. An energy efficient combined cycle power system, comprising:
- an internal combustion engine driving a first motor/generator;
a heat exchanger;
means connecting the engine and heat exchanger for providing heat generated by the engine to the heat exchanger;
a first expander driving a second motor/generator;
means connecting the heat exchanger and the first expander for providing heat from the heat exchanger to the first expander;
a third motor/generator; and
means for providing power between at least one of the first and second motor/generators to the third motor/generator.
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Abstract
An improved power system that recovers heat energy from the exhaust of internal combustion utilizing an internal combustion engine in combination with a Brayton bottoming system. Heat from a thermal battery drives the bottoming system to create electrical power that supplements the engine power. Sources of heat for the thermal battery include hot engine exhaust gasses, electrically generated heat, and residual heat from motor/generators.
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Citations
15 Claims
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1. An energy efficient combined cycle power system, comprising:
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an internal combustion engine driving a first motor/generator;
a heat exchanger;
means connecting the engine and heat exchanger for providing heat generated by the engine to the heat exchanger;
a first expander driving a second motor/generator;
means connecting the heat exchanger and the first expander for providing heat from the heat exchanger to the first expander;
a third motor/generator; and
means for providing power between at least one of the first and second motor/generators to the third motor/generator. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
wheels driven by the third motor/generator when it is in motor mode and driving the third motor/generator when it is in generator mode;
braking means coupled to the wheels whereby power is provided between the third motor/generator and the second motor/generator;
means driven by said second motor/generator for compressing air;
means for storing the compressed air; and
means for selectively providing compressed air to the heat exchanger.
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10. The power system of claim 1, and further comprising;
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wheels driven by the third motor/generator when it is in motor mode and driving the third motor/generator when it is in generator mode;
a plurality of heating elements within the thermal battery;
braking means coupled to the wheels whereby power is provided between the third motor/generator and the heating elements.
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11. The power system of claim 10 wherein the heating elements are electromagnetic induction heating elements.
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12. A closed energy efficient combined cycle power system, comprising:
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an internal combustion engine driving a first motor/generator;
a heat exchanger;
means connecting the engine and heat exchanger for providing heated compressed fluid from the engine to the heat exchanger;
a first expander driving a second motor/generator;
first means connecting the heat exchanger and the first expander for providing heated compressed fluid from the heat exchanger to the first expander;
second means connecting the first expander and the heat exchanger for providing heated compressed fluid from the first expander to the heat exchanger;
and means for providing heated compressed fluid from the heat exchanger to the internal combustion engine; and
means for exhausting excess fluid. - View Dependent Claims (13, 14, 15)
a compressor that receives heated compressed fluid from the heat exchanger;
a combustor that receives and further heats compressed fluid from the compressor; and
a second expander connected to the first motor/generator that receives heated compressed fluid from the combustor and drives the first motor/generator.
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14. The power system of claim 13 and further comprising;
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a source of liquid oxygen means for receiving the excess exhaust fluid and condensing it by heat transfer to the liquid oxygen; and
means for storing the condensed exhaust gasses.
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15. The power system of claim 12 wherein said engine is a variable output gas turbine.
Specification