System and methodology for generating electricity using a chemical heat engine and piezoelectric material
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F03G-007/08
F03G-007/00
출원번호
US-0530147
(2006-09-08)
등록번호
US-7439630
(2008-10-21)
발명자
/ 주소
Peacock,Kimberly
출원인 / 주소
Helius Inc.
대리인 / 주소
Gordon & Jacobson, PC
인용정보
피인용 횟수 :
9인용 특허 :
17
초록▼
A system for generating electrical power supply signals includes at least one heat engine having a chamber that undergoes heating/cooling cycle and corresponding pressure variations. At least one piezoelectric transducer is deformed in response to the pressure variations of the heat engine. A power
A system for generating electrical power supply signals includes at least one heat engine having a chamber that undergoes heating/cooling cycle and corresponding pressure variations. At least one piezoelectric transducer is deformed in response to the pressure variations of the heat engine. A power converter transforms the electric signals generated in response to deformation of the piezoelectric transducer(s) to a desired electrical power supply signal. The heat engine preferably uses a geothermal source of cold and an ambient source of hot or vice-versa. Hydrogen can be used as a working fluid, and metal hydride material can be used for absorbing and desorbing hydrogen during the cycle of heating and cooling of the heat engine. A phase change material can also be used. The power converter preferably includes an electromechanical battery with a flywheel storing rotational energy and possibly an electrostatic motor that adds rotational energy to the flywheel.
대표청구항▼
What is claimed is: 1. A system for generating electrical signals comprising: at least one heat engine having a chamber that undergoes a cycle of heating and cooling and corresponding pressure variations; At least one piezoelectric transducer operably coupled to the heat engine, which is deformed i
What is claimed is: 1. A system for generating electrical signals comprising: at least one heat engine having a chamber that undergoes a cycle of heating and cooling and corresponding pressure variations; At least one piezoelectric transducer operably coupled to the heat engine, which is deformed in response to the pressure variations of the heat engine and generates an electrical output signal as a result of the deformation; and a power converter operably coupled to the at least piezoelectric transducer, which transforms said electrical output signals to a desired electrical power supply signal. 2. A system according to claim 1, wherein: the heat engine has a geothermal source of cold and an ambient source of hot. 3. A system according to claim 1, wherein: the heat engine has a geothermal source of hot and an ambient source of cold. 4. A system according to claim 1, wherein: hydrogen is disposed as a working fluid within the chamber of the heat engine. 5. A system according to claim 4, wherein: at least one metal hydride material is disposed within the chamber of the heat engine, the metal hydride material for absorbing and desorbing hydrogen during the cycle of heating and cooling of the heat engine. 6. A system according to claim 5, wherein: at least one phase change material is disposed within the chamber of the heat engine. 7. A system according to claim 6, wherein: the metal hydride material absorbs hydrogen at a first pressure and a first temperature within the chamber, the first temperature corresponding a temperature at which the phase change material releases heat. 8. A system according to claim 7, wherein: the metal hydride material desorbs hydrogen at a second pressure and a second temperature within the chamber, the second temperature corresponding a temperature at which the phase change material absorbs heat. 9. A system according to claim 1, wherein: the power converter comprises an electromechanical battery with a flywheel storing rotational energy. 10. A system according to claim 9, wherein: the power converter includes means for transforming rotational energy of the flywheel to the desired electrical power supply signal. 11. A system according to claim 9, wherein: the electromechanical battery includes a rotor that is electromagnetically coupled to a stator, the rotor operably coupled to the flywheel, wherein one of the rotor and stator comprises a permanent array of magnets. 12. A system according to claim 9, wherein: the power converter includes an electrostatic motor, operably coupled to the electromechanical battery, which adds rotational energy to the flywheel. 13. A system according to claim 12, wherein: the electrostatic motor includes a rotor and stator that are rotated relative to one another via repulsive coulomb forces, said rotor operably coupled to the flywheel of the electromechanical battery. 14. A system according to claim 12, wherein: the power converter comprises interface circuitry operably coupled between the at least one piezoelectric transducer element and the electrostatic motor. 15. A system according to claim 14, wherein: the interface circuitry comprises a Marx generator circuit. 16. A system according to claim 15, wherein: the interface circuitry comprises an AC-DC rectifier and a filter capacitor that cooperate to generate a charging voltage signal for input to the Marx generator circuit. 17. A system according to claim 1, wherein: the desired electrical power supply signal comprises a DC power supply signal. 18. A system according to claim 1, wherein: the desired electrical power supply signal comprises an AC power supply signal. 19. A system according to claim 18, wherein: the AC power supply signal comprises a standard AC power supply signal. 20. A system according to claim 19, wherein: the standard AC power supply signal comprises a 60 Hz 120V AC electrical supply signal. 21. A system for generating electrical signals comprising: at least one heat engine having a chamber that undergoes a cycle of heating and cooling and corresponding pressure variations; and At least one piezoelectric transducer operably coupled to the heat engine, which is deformed in response to the pressure variations of the heat engine and generates an electrical output signal as a result of the deformation; wherein hydrogen is disposed as a working fluid within the chamber of the heat engine. 22. A system according to claim 21, wherein: at least one metal hydride material is disposed within the chamber of the heat engine, the metal hydride material for absorbing and desorbing hydrogen during the cycle of heating and cooling of the heat engine. 23. A system according to claim 22, wherein: at least one phase change material is disposed within the chamber of the heat engine. 24. A system according to claim 23, wherein: the metal hydride material absorbs hydrogen at a first pressure and a first temperature within the chamber, the first temperature corresponding a temperature at which the phase change material releases heat, and the metal hydride material desorbs hydrogen at a second pressure and a second temperature within the chamber, the second temperature corresponding a temperature at which the phase change material absorbs heat.
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이 특허에 인용된 특허 (17)
Bennett Gloria A. (Los Alamos NM), Compact acoustic refrigerator.
Howe Roger T. (Belmont MA) Lang Jeffrey H. (Waltham MA) Schlecht Martin F. (Lexington MA) Schmidt Martin A. (Brookline MA) Senturia Stephen D. (Boston MA), Electrostatic micromotor.
Wallace W. Edward (Pittsburgh PA) Smith H. Kevin (Pittsburgh PA) Lynch W. Bryan (Pittsburgh PA) Craig Raymond S. (Pittsburgh PA) Pourarian Fiaz (Verona PA), Hydrogen heat pump.
Hsu, Sean Nean, Apparatus for generating energy from a fluid flow induced movement of a surface structure relative to an opening to a cavity in a frame.
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