Patent US6519946B2 successfully refreshed from Google Patents.
US6519946B2
Expired / Lapsed
US
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Cogeneration system using waste-heat gas generated in micro gas turbine
Assignee: Japan Steel Works Ltd
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Filing: 2001-06-06
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Granted: 2003-02-18
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Expires: 2021-06-06
Abstract
Abstract A waste-heat gas driven cogeneration having a micro gas turbine, driving portions including high-temperature-side hydrogen storage alloy containers respectively and operated by heat exchange between waste-heat gas generated from the turbine and a cooling heat medium, and cold-heat generating portions including low-temperature-side hydrogen storage alloy containers respectively to absorb and release hydrogen into/from the containers to generate cold heat and supply the cold heat.
Inventors
- 👤 Takashi Iwamoto
- 👤 Hiroyuki Togo
- 👤 Masamitsu Murai
- 👤 Ritsu Miura
- 👤 Koji Hattori
- 👤 Harunobu Takeda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:26
CPC Classifications
F; F25; F25B; F25B27/00; F25B27/02; F02; F02C; F02C6/00; F02C6/18; F25B17/00; F25B17/12; F05; F05D; F05D2260/00; F05D2260/20; F05D2260/205; F05D2260/232; F25B2400/00; F25B2400/22; Y; Y02; Y02A; Y02A30/00; Y02A30/27; Y02A30/274; Y02B; Y02B30/00; Y02B30/62; Y02B30/625; Y02E; Y02E20/00; Y02E20/14
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
170 words
A cogeneration system using micro gas turbine waste-heat gas, comprising: a micro gas turbine; a driving portion comprising a high-temperature-side hydrogen storage alloy container and for absorbing hydrogen through heat exchange between said high-temperature-side hydrogen storage alloy container and a cold-heat heat medium, said driving portion being capable of releasing hydrogen through heat exchange between said high-temperature-side hydrogen storage alloy container and waste-heat gas from said micro gas turbine; and a cold heat output portion, connected to said driving portion so that hydrogen can move therebetween, comprising a low-temperature-side hydrogen storage alloy container and being capable of absorbing and releasing hydrogen by use of said low-temperature-side hydrogen storage alloy container in accordance with the operation of said driving portion to generate cold heat, and transmit said cold heat to a cooling heat medium to thereby externally supply said cold heat through said cooling heat medium, wherein said heat exchange between said high-temperature-side hydrogen storage alloy container and said waste-heat gas from said micro gas turbine is a direct heat exchange.
Claim 2
Dependent Claim
170 words
A cogeneration system using micro gas turbine waste-heat gas, comprising: a micro gas turbine; a driving portion comprising a high-temperature-side hydrogen storage alloy container and for absorbing hydrogen through heat exchange between said high-temperature-side hydrogen storage alloy container and a cold-heat heat medium, said driving portion being capable of releasing hydrogen through heat exchange between said high-temperature-side hydrogen storage alloy container and waste-heat gas from said micro gas turbine; and a cold heat output portion, connected to said driving portion so that hydrogen can move therebetween, comprising a low-temperature-side hydrogen storage alloy container and being capable of absorbing and releasing hydrogen by use of said low-temperature-side hydrogen storage alloy container in accordance with the operation of said driving portion to generate cold heat, and transmit said cold heat to a cooling heat medium to thereby externally supply said cold heat through said cooling heat medium, wherein said heat exchange between said high-temperature-side hydrogen storage alloy container and said waste-heat gas from said micro gas turbine is a direct heat exchange.
Claim 3
Dependent Claim
45 words
A cogeneration system using micro gas turbine waste-heat gas according to claim 1 , wherein an additional heat exchange is performed between said waste-heat gas from said micro gas turbine and an additional high-temperature-side container indirectly through steam generated by heat of said waste-heat gas.
Claim 4
Dependent Claim
52 words
A cogeneration system using micro gas turbine waste-heat gas according to claim 1 , wherein said driving portion and said cold heat generating portions are provided multistageously respectively so that waste-heat gas subjected to heat exchange in a pre-stage driving portion is further subjected to heat exchange in a post-stage driving portion.
Claim 5
Dependent Claim
69 words
A cogeneration system using micro gas turbine waste-heat gas according to claim 3 , wherein a first heat exchange is performed between said waste-heat gas from said micro gas turbine and said pre-stage high-temperature-side container indirectly through steam generated by heat of said waste-heat gas, and further heat exchange is performed directly between said waste-heat gas, after said first heat exchange, and a high-temperature-side container in said post stage.
Claim 6
Dependent Claim
53 words
A cogeneration system using micro gas turbine waste-heat gas according to claim 1 , further comprising a hot water generator for generating hot water by performing heat exchange between water of said hot water generator and said waste-heat gas after said waste-heat gas is subjected to the heat exchange in said driving portion.
Claim 7
Dependent Claim
23 words
A cogeneration system using micro gas turbine waste-heat gas according to claim 1 , wherein said cooling heat medium is a liquid refrigerant.
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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) | 2006-02-17 | 2006-08-19 | 2007-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2010-02-17 | 2010-08-19 | 2011-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2014-02-17 | 2014-08-19 | 2015-02-18 | $7700.00 | Window Closed / Lapsed |