Generated system bottoming cycle
First Claim
1. A closed loop Rankine bottoming cycle, comprising:
- a heat exchanger coupled to an exhaust port of a first turbogenerator, and configured to heat a pressurized refrigerant into a gaseous phase;
a second turbogenerator coupled to the heat exchanger, and configured to expand the gaseous phase so as to create power;
a cooling mechanism coupled to an exhaust of the second turbogenerator, and configured to cool the gaseous phase exhausted by the second turbogenerator into a liquid phase; and
a pumping mechanism configured to pressurize the liquid phase into the pressurized refrigerant heated by the heat exchanger.
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Abstract
A closed loop Rankine bottoming cycle including a heat exchanger coupled to an exhaust port of a first turbogenerator for heating a pressurized refrigerant into a gaseous phase, and a second turbogenerator (e.g., a turbo expander) coupled to the heat exchanger for expanding the gaseous phase so as to create power. Also included is a cooling mechanism coupled to an exhaust of the second turbogenerator for cooling the gaseous phase exhausted by the second turbogenerator into a liquid phase, and a pumping mechanism for pressurizing the liquid phase into the pressurized refrigerant heated by the heat exchanger. A computer program product and method for operating and synchronizing the generator included in the closed loop, so as to optimize the overall system efficiency is also included.
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Citations
51 Claims
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1. A closed loop Rankine bottoming cycle, comprising:
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a heat exchanger coupled to an exhaust port of a first turbogenerator, and configured to heat a pressurized refrigerant into a gaseous phase;
a second turbogenerator coupled to the heat exchanger, and configured to expand the gaseous phase so as to create power;
a cooling mechanism coupled to an exhaust of the second turbogenerator, and configured to cool the gaseous phase exhausted by the second turbogenerator into a liquid phase; and
a pumping mechanism configured to pressurize the liquid phase into the pressurized refrigerant heated by the heat exchanger. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51)
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18. A method of operating a closed loop Rankine bottoming cycle, comprising:
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heating a pressurized refrigerant into a gaseous phase via a heat exchanger coupled to an exhaust port of a first turbogenerator;
expanding the gaseous phase so as to create power via a second turbogenerator coupled to the heat exchanger;
cooling the gaseous phase exhausted by the second turbogenerator into a liquid phase via a cooling mechanism coupled to an exhaust of the second turbogenerator; and
pressurizing the liquid phase into the pressurized refrigerant heated by the heat exchanger via a pumping mechanism.
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35. A system of operating a closed loop Rankine bottoming cycle, comprising:
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means for heating a pressurized refrigerant into a gaseous phase and being coupled to an exhaust port of a first turbogenerator;
means for expanding the gaseous phase so as to create power and being coupled to the heat exchanger;
means for cooling the gaseous phase exhausted by the second turbogenerator into a liquid phase and being coupled to an exhaust of the second turbogenerator; and
means for pressurizing the liquid phase into the pressurized refrigerant heated by the heating means.
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Specification