US3799144A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solar heat source and receiver system
Assignee: United States Department of the Air Force
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Filing: 1972-03-21
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Granted: 1974-03-26
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Expires: 1992-03-21
Abstract
Abstract A system for collecting solar heat to meet high power heat requirements as in a Vuilleumier cycle cryogenic refrigerator, in space application. The system includes a short focal-length-todiameter ratio collector, a heat receiver having a convex surface attached to a heat pipe further containing a heat storage element which is connected to the use, i.e. a cryogenic refrigerator. The heat receiver utilizes a novel coating allowing the system to realize an effeciency in excess of fifty percent.
Inventors
- 👤 C Petersen
- 👤 J Ramsey
- 👤 R Schmidt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:02
CPC Classifications
F; F25; F25B; F25B27/00; F25B27/002; B; B64; B64G; B64G1/00; B64G1/22; B64G1/226; B64G1/42; B64G1/44; B64G1/446; F02; F02G; F02G1/00; F02G1/04; F02G1/043; F02G1/044; F02G1/0445; F24; F24S; F24S23/00; F24S23/70; F24S23/71; F24S30/00; F24S30/40; F02G2250/00; F02G2250/18; F02G2254/00; F02G2254/30; Y; Y02; Y02E; Y02E10/00; Y02E10/40; Y02E10/47
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
82 words
A system for collecting and storing heat from solar radiation comprising: a solar radiation collecting means, including a paraboloid dish-shaped mirror having a short focal-length-to diameter ratio; a hollow sphere means covered externally with successive layers of cerium oxide, molybdenum and magnesium fluoride on a molybdenum substrate, for receiving and converting solar radiation to heat; means connected to the said hollow sphere means for transferring heat to a heat use means; and heat storage means operatively associated with the heat transfer means.
Claim 2
Independent Claim
82 words
A system for collecting and storing heat from solar radiation comprising: a solar radiation collecting means, including a paraboloid dish-shaped mirror having a short focal-length-to diameter ratio; a hollow sphere means covered externally with successive layers of cerium oxide, molybdenum and magnesium fluoride on a molybdenum substrate, for receiving and converting solar radiation to heat; means connected to the said hollow sphere means for transferring heat to a heat use means; and heat storage means operatively associated with the heat transfer means.
Claim 3
Dependent Claim
31 words
A system according to claim 1 wherein the means for transferring heat includes a heat pipe, having a molybdenum shell, and containing a molybdenum mesh wick and a potassium working fluid.
Claim 4
Dependent Claim
65 words
A system according to claim 2 wherein said heat storage means include a housing surrounding the heat transfer means; means within the housing attached to the heat pipe for drawing heat away from the heat pipe, an expandable container within the housing surrounding the heat transfer means and containing material for storing heat, and heat insulation means positioned between the housing and the expandable container.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-25 | 1977-09-24 | 1978-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-25 | 1981-09-24 | 1982-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-25 | 1985-09-24 | 1986-03-26 | $7700.00 | Window Closed / Lapsed |