Patent US4221259A successfully refreshed from Google Patents.
US4221259A
Expired / Lapsed
US
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Process for storing calories
Assignee: Elf Antar France
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Filing: 1979-01-03
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Granted: 1980-09-09
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Expires: 1999-01-03
Abstract
Abstract A process for storing heat in the form of fusion/solidification latent heat which comprises passing a thermo-conductive fluid into a thermally insulated storage element containing a substance having a melting point that corresponds to the supply and heat consumption temperatures, characterized in that said fusible substance is absorbed on a microporous carrier which forms a granular bed in which the thermo-conductive fluid circulates.
Inventors
- 👤 Michel Ronc
- 👤 Michel Perrut
- 👤 Patrick Valentin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:54
CPC Classifications
F; F28; F28D; F28D20/00; F28D20/02; F28D20/023; Y; Y02; Y02E; Y02E60/00; Y02E60/14
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
65 words
A process for storing heat in the form of latent heat of fusion/solidification which comprises passing a thermo-conductive fluid into a thermally insulated storage receptacle containing a substance having a melting point corresponding to the temperatures of introduction and withdrawal of heat, wherein the fusible substance is absorbed on a finely divided microporous carrier which comprises a granular bed in which the thermo-conductive fluid circulates.
Claim 2
Dependent Claim
65 words
A process for storing heat in the form of latent heat of fusion/solidification which comprises passing a thermo-conductive fluid into a thermally insulated storage receptacle containing a substance having a melting point corresponding to the temperatures of introduction and withdrawal of heat, wherein the fusible substance is absorbed on a finely divided microporous carrier which comprises a granular bed in which the thermo-conductive fluid circulates.
Claim 3
Dependent Claim
32 words
A process according to claim 1, characterized in that the finely divided microporous absorbent carrier is in the form of powder, grain or, sticks having a diameter of less than 2 mm.
Claim 4
Dependent Claim
27 words
A process according to claims 1 or 2, wherein the absorbent carrier is a material selected from the group consisting of active coal, coke and mixtures thereof.
Claim 5
Dependent Claim
28 words
A process according to claim 1, wherein the fusible substance is selected from the group consisting of paraffin, fusible mineral salts, metal hydrides, alloys, metal alloys and polymers.
Claim 6
Dependent Claim
23 words
A process according to claim 1 or 2 or 4, wherein the microporous carrier is impregnated by immersion in the melted fusible substance.
Claim 7
Dependent Claim
37 words
A process according to claim 1 or 2 or 4, wherein the fusible substance preferentially wets the carrier to an extent greater than the thermo-conductive fluid whereby displacement of fusible material from the carrier material is prevented.
Claim 8
Dependent Claim
16 words
A process according to claim 1 or 2 or 4, wherein the thermo-conductive fluid is air.
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) | 1983-09-09 | 1984-03-10 | 1984-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-09-09 | 1988-03-10 | 1988-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-09-09 | 1992-03-10 | 1992-09-09 | $7700.00 | Window Closed / Lapsed |