Compact man-portable thermophotovoltaic battery charger
May 15, 2018. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3433676 3751303 Thermophotovoltaic converter and cell for use therein Thermophotovoltaic technology Multiband emitter matched to multilayer photovoltaic collector Compact DC electric power generator using low bandgap thermophotovoltaic cell strings with a hydrocarbon gas burner fitted with a regenerator Thermally amplified and stimulated emission radiator fiber matrix burner Compact DC/AC electric power generator using convective liquid cooled low bandgap thermophotovoltaic cell strings and regenerative hydrocarbon burner Thermophotovoltaic receiver assembly Spectral control for thermophotovoltaic generators InventorsAssigneeApplicationNo. 079395 filed on 05/15/1998US Classes:136/253Radioactive, ionic, or thermo photoExaminersPrimary: Chapman, MarkAttorney, Agent or FirmInternational ClassH01L 031/00AbstractA small and light cylindrical thermophotovoltaic generator uses gaseous fuels, a counter flow heat exchanger, regenerator and low bandgap photovoltaic cells. In the fuel injection system, with preheated air from a recuperator, fuel combustion begins immediately when the fuel and air first meet. A hot and compact burn results from complete and rapid fuel and air mixing. A venturi necks down the air flow, and a chemically etched jet shim disk creates over 150 small fuel jet streams. The emitter geometric configuration provides good hot gas energy transfer to the IR emitter. Four alternate emitter configurations accomplish the good heat transfer. One emitter is a composite SiC with integrally formed internal fins which extend into the combustion chamber. The photovoltaic converter assembly has good spectral control, good high rate but lightweight heat removal and high current-carrying capability, while maintaining low parasitic IR absorption. A modular photovoltaic converter circuit is complete with series connected low bandgap filtered cells, a heat spreader and high current-carrying mirror-shielded interconnects. An efficient but lightweight and short heat exchanger regenerator is fairly easy to fabricate by inserting an array of angled vanes through slits in a simple cylinder. One regenerator is formed with integrally extruded or machined fins on a high temperature SiC composite.Other References
Field of SearchRadioactive, ionic, or thermo photo | |
