US4200144A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydride heat pump
Assignee: BP Corp North America Inc
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Filing: 1977-06-02
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Granted: 1980-04-29
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Expires: 1997-06-02
Abstract
Abstract Hydrides are used as a means to pump heat from a low grade thermal source, using hydrogen and materials which reversibly and exothermically form hydrides therewith at low temperatures and pressures, and which reversibly dehydride to release large quantities of hydrogen at relatively higher temperatures and pressures, which hydrogen then exothermically recombines with a second hydride species, thereby pumping heat from a given temperature to a higher temperature.
Inventors
- 👤 Bruce E. Sirovich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:03
CPC Classifications
F; F25; F25B; F25B17/00; F25B17/12; Y; Y02; Y02A; Y02A30/00; Y02A30/27; Y02B; Y02B30/00; Y02B30/62
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
244 words
A method for transferring heat energy between two different temperatures comprising: chemically forming and decomposing hydrides by reaction of hydrideable materials with hydrogen gas in a plurality of hydride-dehydride reactor means, said plurality comprising first and second reactor means with said first and second reactor means comprising first and second hydrideable materials, respectively, wherein said first and second hydrideable materials are of dissimilar compositions; supplying heat at temperatures T 1 to said first reactor means to promote the decomposition of said hydrided materials in said first reactor means and liberate hydrogen gas; allowing hydrogen gas to transfer between said first and second reactor means; removing heat at temperature T 2 from said second reactor means as said hydrideable materials contained therein exothermically absorb said hydrogen gas liberated by said first reactor means; supplying heat at temperature T 3 to said second reactor means to promote the decomposition of said hydrided materials in said second reactor means to liberate said absorbed hydrogen gas; and removing heat at T 4 from said first reactor means as said hydrideable materials contained therein exothermically absorb said hydrogen gas liberated by said second reactor means, wherein the temperature range over which said second reactor means operates, T 3 to T 2 , is different from and independent of the temperature range over which said first reactor means operates, T 1 to T 4 , and said first reactor means and said second reactor means liberate hydrogen at different pressures.
Claim 2
Independent Claim
244 words
A method for transferring heat energy between two different temperatures comprising: chemically forming and decomposing hydrides by reaction of hydrideable materials with hydrogen gas in a plurality of hydride-dehydride reactor means, said plurality comprising first and second reactor means with said first and second reactor means comprising first and second hydrideable materials, respectively, wherein said first and second hydrideable materials are of dissimilar compositions; supplying heat at temperatures T 1 to said first reactor means to promote the decomposition of said hydrided materials in said first reactor means and liberate hydrogen gas; allowing hydrogen gas to transfer between said first and second reactor means; removing heat at temperature T 2 from said second reactor means as said hydrideable materials contained therein exothermically absorb said hydrogen gas liberated by said first reactor means; supplying heat at temperature T 3 to said second reactor means to promote the decomposition of said hydrided materials in said second reactor means to liberate said absorbed hydrogen gas; and removing heat at T 4 from said first reactor means as said hydrideable materials contained therein exothermically absorb said hydrogen gas liberated by said second reactor means, wherein the temperature range over which said second reactor means operates, T 3 to T 2 , is different from and independent of the temperature range over which said first reactor means operates, T 1 to T 4 , and said first reactor means and said second reactor means liberate hydrogen at different pressures.
Claim 3
Dependent Claim
24 words
The method of claim 1 wherein the output temperature T 2 is greater than T 1 , T 3 , and T 4 .
Claim 4
Dependent Claim
21 words
The method of claim 1 wherein temperature T 3 is less than T 1 , T 2 and T 4 .
Claim 5
Independent Claim
26 words
The method of claims 2 or 3 wherein the transfer of hydrogen gas between said first and second reactor means is achieved substantially without mechanical assistance.
Claim 6
Dependent Claim
50 words
The method of claim 4 wherein said second reactor means comprises a plurality of hydride-dehydride reactor means arranged as a temperature ladder which pumps heat from about temperature T 3 up to about temperature T 2 , wherein at least two of said hydride-dehydride means contain dissimilar hydrideable material compositions.
Claim 7
Dependent Claim
55 words
The method of claim 5 wherein said first reactor means comprises a plurality of hydride-dehydride reactor means arranged as a pressure ladder in which each of said hydride-dehydride reactor means operates between about temperatures T 1 and T 4 , and wherein at least two of said hydride-dehydride reactor means contains dissimilar hydrideable material compositions.
Claim 8
Dependent Claim
42 words
The method of claim 6 wherein said pressure ladder draws hydrogen from said temperature ladder at about pressure P 6 and supplies hydrogen to said temperature ladder at about pressure P a , and P a is greater than P b .
Claim 9
Dependent Claim
26 words
The method of claim 7 wherein each of said hydride-dehydride reactor means comprising said temperature ladder operates between about pressures P a and P b .
References Cited (Backward Citations)
US4040410A
Cited
US3943719A
Cited
US4085590A
Cited
US4044819A
Cited
US4039023A
Cited
US4111002A
Cited
US4055962A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-04-29 | 1983-10-29 | 1984-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-04-29 | 1987-10-29 | 1988-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-04-29 | 1991-10-29 | 1992-04-29 | $7700.00 | Window Closed / Lapsed |