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Patent US4119556A successfully refreshed from Google Patents.
US4119556A
Expired / Lapsed
US
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Thermal energy storage material comprising mixtures of sodium, potassium and magnesium chlorides
Assignee: United States Department of the Navy
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Filing: 1977-06-01
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Granted: 1978-10-10
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Expires: 1997-06-01
Abstract
Abstract Storage of thermal energy in a ternary mixture of salts which comprises from 22.5 to 26.5 weight percent of sodium chloride, from 18.5 to 22.5 weight percent of potassium chloride and from 53.0 to 57.0 weight percent of magnesium chloride.
Inventors
- 👤 Talbot A. Chubb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:11
CPC Classifications
C; C09; C09K; C09K5/00; C09K5/02; C09K5/06
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
92 words
A thermal energy-storage material which comprises a ternary salt mixture of sodium chloride, potassium chloride, and magnesium chloride in a NaCl:KCl:MgCl 2 weight ratio range of 22.5 to 26.5:18:5 to 22.5:53.0 to 57.0 and an additive salt selected from the class consisting of calcium, barium, strontium chloride, sodium, potassium, and magnesium bromide, sodium, potassium, and magnesium fluoride and mixtures thereof in an amount sufficient to reduce the melting point of said thermal energy-storage material below that of said ternary salt mixture and not to exceed 10 weight percent of the total composition.
Claim 2
Dependent Claim
92 words
A thermal energy-storage material which comprises a ternary salt mixture of sodium chloride, potassium chloride, and magnesium chloride in a NaCl:KCl:MgCl 2 weight ratio range of 22.5 to 26.5:18:5 to 22.5:53.0 to 57.0 and an additive salt selected from the class consisting of calcium, barium, strontium chloride, sodium, potassium, and magnesium bromide, sodium, potassium, and magnesium fluoride and mixtures thereof in an amount sufficient to reduce the melting point of said thermal energy-storage material below that of said ternary salt mixture and not to exceed 10 weight percent of the total composition.
Claim 3
Dependent Claim
26 words
The thermal-energy storage material of claim 1, wherein said additive salt is selected from the class consisting of calcium, barium and strontium chloride and mixtures thereof.
Claim 4
Dependent Claim
18 words
A method of storing thermal-energy which comprises transferring thermal energy to said thermal-energy storage material of claim 1.
Claim 5
Dependent Claim
19 words
A method for storing thermal energy which comprises transferring thermal energy to said thermal-energy storage material of claim 2.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-10-09 | 1982-04-10 | 1982-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-10-09 | 1986-04-10 | 1986-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-10-09 | 1990-04-10 | 1990-10-10 | $7700.00 | Window Closed / Lapsed |