Double-walled solar heater apparatus and method for use

a solar heater and double-walled technology, applied in solar heat systems, light and heating apparatuses, collector thermal insulation, etc., can solve problems such as design deviations from past dewar flask implementations

US20080066738A1Inactive Publication Date: 2008-03-20LANDIS HARRY M
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Patent Information

Authority / Receiving Office
US · United States
Current Assignee / Owner
Publication Date
2008-03-20
Estimated Expiration
Not applicable · inactive patent

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Abstract

The solar heater apparatus disclosed comprises an inner container and an outer container each having an opening forming a mouth. The inner container is contained within the outer container and has on its outside surface a solar-selective coating optimized to absorb a large fraction of the incident solar radiation while reradiating little of the absorbed energy. The two containers are joined creating one unified apparatus with a reservoir, an opening and a void between the two containers. The void is evacuated to reduce the heat loss due to thermal conduction from the inner container and the contents of the reservoir. In operation, the reservoir is filled with material and exposed to the sun. The solar radiation from the sun penetrates the outer container and is absorbed by the solar-selective coating and, by conduction, passes thermal energy through the inner container into the apparatus reservoir heating the reservoir contents.
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Description

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application claims the benefit of U.S. Provisional Patent Application No. 60 / 845,697 filed on Sep. 19, 2006 and all of said application is herein incorporated by reference.STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT:

[0002] Not Applicable.NAMES OF PARTIES TO JOINT RESEARCH AGREEMENT

[0003] Not applicable.REFERENCE TO SEQUENCE LISTING, A TABLE, OR A COMPUTER PROGRAM LISTING COMPACT DISC APPENDIX

[0004] Not Applicable.BACKGROUND OF THE INVENTION

[0005] 1. Field of the Invention

[0006] This invention relates to techniques for heating materials using a solar heat apparatus. In one embodiment, the invention relates a solar heat apparatus for heating liquids, such as water, for disinfecting and cooking purposes.

[0007] 2. Description of the Prior Art

[0008] The need for safe drinking water covers the entire world's population. Non-portable drinking water is a major problem for much of the world's population.

[0009] Chlorine is consider...

Examples

Embodiment Construction

[0046]Before explaining the disclosed embodiment of the present invention in detail it is to be understood that the invention is not limited in its application to the details of the particular arrangement shown since the invention is capable of other embodiments. Also, the terminology used herein is for the purpose of description and not of limitation.

The Solar Heater Apparatus:

[0047]FIG. 1 shows a perspective view of one embodiment of the solar heater apparatus 10. The general shape of this solar heater apparatus embodiment is a spherical flask. This apparatus has an apparatus opening 33 and a base 12 to help serve as a self-supporting structure to stabilize the apparatus when it is resting on a surface.

[0048]FIG. 1B shows a top view of the solar heater apparatus 10 marked for cross-section A-A that is used in FIG. 2 and FIG. 4.

[0049]FIG. 2 shows a cross-sectional view of the solar collector apparatus 10 comprising a flask shaped inner container 21 and a similarly flask shaped oute...