EP0071271A2
Expired / Lapsed
EP
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Metal hydride heat pump system
Assignee: Sekisui Chemical Co Ltd
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Filing: 1982-07-29
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Granted: —
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Expires: 2002-07-29
Abstract
Abstract A metal hydride heat pump system comprising a plurality of operating units, each operating units comprising a combination of a first metal hydride having a lower equilibrium dissociation pressure at an operating temperature and a second metal hydride having a higher equilibrium dissociation pressure at the operating temperature in such a manner that hydrogen can flow freely between the two metal hydrides, wherein the equilibrium dissociation pressure characteristics of one or both of the first and second metal hydrides in a given operating unit differ from those of one or both of the first and second metal hydrides in at least one other operating unit.
Inventors
- 👤 Tomoyoshi Nishizaki
- 👤 Minoru Miyamoto
- 👤 Kazuaki Miyamoto
- 👤 Ken Yoshida
- 👤 Katsuhiko Yamaji
- 👤 Yasushi Nakata
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 09:38
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: 15
Claim 1
Independent Claim
105 words
A metal hydride heat pump system comprising a plurality of operating units, each operatinq units comprising a combination of a first metal hydride having a lower equilibrium dissociation pressure at an operating temperature and a second metal hydride having a higher equilibrium dissociation pressure at the operating temperature in such a manner that hydrogen can flow freely between the two metal hydrides, wherein the equilibrium dissociation pressure characteristics of one or both of the first and second metal hydrides in a given operating unit differ from those of one or both of the first and second metal hydrides in at least one other operating unit.
Claim 2
Dependent Claim
105 words
A metal hydride heat pump system comprising a plurality of operating units, each operatinq units comprising a combination of a first metal hydride having a lower equilibrium dissociation pressure at an operating temperature and a second metal hydride having a higher equilibrium dissociation pressure at the operating temperature in such a manner that hydrogen can flow freely between the two metal hydrides, wherein the equilibrium dissociation pressure characteristics of one or both of the first and second metal hydrides in a given operating unit differ from those of one or both of the first and second metal hydrides in at least one other operating unit.
Claim 3
Independent Claim
12 words
The system according to claim I which comprises two said operating units.
Claim 4
Dependent Claim
39 words
The system according to claim 2 wherein the equilibrium dissociation pressure characteristics of a first metal hydride in a first operating unit differ from the equilibrium dissociation pressure characteristics of a first metal hydride in a second operating unit.
Claim 5
Dependent Claim
39 words
The system according to claim 2 wherein the equilibrium dissociation pressure characteristics of a second metal hydride in a first operating unit differ from the equilibrium dissociation pressure characteristics of a second metal hydride in a second operating unit.
Claim 6
Dependent Claim
39 words
The system according to claim 2 wherein the equilibrium dissociation pressure characteristics of the first and second metal hydrides in a first operating unit differ from those of the first and second metal hydrides in a second operating unit.
Claim 7
Dependent Claim
37 words
The system according to claim 1 wherein the amount of the first and second metal hydrides in one operating unit differ from that of the first and second metal hydrides in at least one other operating unit.
Claim 8
Independent Claim
40 words
The system according to any one of claims 1 to 6 wherein the first and second metal hydrides in one operating unit are heat-exchangeable with the first and second metal hydrides in at least one other operating unit whenever required.
Claim 9
Dependent Claim
128 words
The system according to claim 1 wherein each of the operating units is operated such that hydrogen is released from the first metal hydride by a driving heat source at a high temperature, the released hydrogen is exothermically occluded by the second metal hydride at a medium temperature, and then hydrogen is endothermically released from the second metal hydride at a low temperature, and the released hydrogen is exothermically occluded by the first metal hydride at a medium temperature, and wherein heat absorption of the second metal hydride at said low temperature is obtained as a cooling output, and heat generation by the first metal hydride at said medium temperature and/or heat generation by the second metal hydride at said medium temperature is obtained as a heating output.
Claim 10
Dependent Claim
28 words
The system according to claim 8 which further comprises means for accumulating heat qenerated by the first metal hydride and/or the second metal hydride at said medium temperature.
Claim 11
Dependent Claim
27 words
The system according to claim 8 which comprises two said operating units one of which is operated with a delay of a half cycle from the other.
Claim 12
Dependent Claim
101 words
The system according to claim 1 wherein each of the operating units is operated in accordance with such a cycle that hydrogen is released endothermically from the first metal hydride, the released hydrogen is exothermically occluded by the second metal hydride, then hydrogen is released endothermically from the second metal hydride and the released hydrogen is exothermically occluded by the first metal hydride, and wherein heat generated by hydrogen occlusion of the second metal hydride is given to the first metal hydride to release hydrogen from the first metal hydride, and the released hydrogen is occluded by the second metal hydride.
Claim 13
Dependent Claim
31 words
The system according to claim 11 wherein the second metal hydride in one operating unit is heat-exchangeable with the first metal hydride in at least one other operating unit whenever required.
Claim 14
Dependent Claim
22 words
The system according to claim 11 which further comprises means for accumulating heat generated by hydrogen occlusion of the second metal hydride.
Claim 15
Dependent Claim
35 words
The system according to claim 11 wherein the first and second metal hydrides in one operating unit are heat-exchangeable with the first and second metal hydrides in at least one other operating unit whenever required.
References Cited (Backward Citations)
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