US4175613A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of storing energy
Assignee: Individual
•
Filing: 1978-06-30
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Granted: 1979-11-27
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Expires: 1998-06-30
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
2026-11-05 15:36
CPC Classifications
C; C09; C09K; C09K5/00; C09K5/02; C09K5/06
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
136 words
A method of storing thermal energy which comprises: transfering thermal energy to a liquid, thereby causing said liquid to become a gas; transporting said gas to a surface thermally connected to a thermal-energy storage material comprising a ternary salt mixture of sodium chloride, potassium chloride, and magnesium chloride in 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, and 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; and condensing said gas at said surface, thereby releasing thermal energy to said storage material.
Claim 2
Independent Claim
136 words
A method of storing thermal energy which comprises: transfering thermal energy to a liquid, thereby causing said liquid to become a gas; transporting said gas to a surface thermally connected to a thermal-energy storage material comprising a ternary salt mixture of sodium chloride, potassium chloride, and magnesium chloride in 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, and 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; and condensing said gas at said surface, thereby releasing thermal energy to said storage material.
Claim 3
Dependent Claim
10 words
The method of claim 1 wherein said liquid is m-terphenyl.
Claim 4
Dependent Claim
17 words
The method of claim 1 wherein said ternary mixture has a NaCl:KCl:MgCl 2 weight ratio of 24.5:20.5:55.0.
Claim 5
Dependent Claim
24 words
The method of claim 1 wherein said additive salt is selected from the class consisting of calcium, barium, and strontium chloride and mixtures thereof.
Claim 6
Dependent Claim
17 words
The method of claim 4 wherein said ternary mixture has a NaCl:KCl:MgCl 2 weight ratio of 24.5:20.5:55.0.
Claim 7
Dependent Claim
10 words
The method of claim 4 wherein said liquid is m-terphenyl.
Claim 8
Dependent Claim
10 words
The method of claim 5 wherein said liquid is m-terphenyl.
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) | 1982-11-26 | 1983-05-28 | 1983-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-11-26 | 1987-05-28 | 1987-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-11-26 | 1991-05-28 | 1991-11-27 | $7700.00 | Window Closed / Lapsed |