US7797940B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and system for producing power from a source of steam
Assignee: Ormat Technologies Inc
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Filing: 2006-02-06
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Granted: 2010-09-21
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Expires: 2026-02-06
Abstract
Abstract The present invention provides a power plant system for producing power using a source of steam, comprising: a vaporizer into which steam from a source of steam is supplied, for vaporizing organic working fluid flowing through the vaporizer; at least one turbine wherein one of the turbines is an organic vapor turbine to which the vaporized working fluid is supplied and which is suitable for generating electricity and producing expanded organic vapor; a recuperator for heating organic vapor condensate flowing towards the vaporizer the expanded organic vapor exhausted from the organic vapor turbine; and two or more stages of preheating means for additionally heating organic working fluid exiting the recuperator and flowing towards the vaporizer, wherein fluid extracted from one of the turbines is delivered to one of the stages of preheating means.
Inventors
- 👤 Uri Kaplan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:17
CPC Classifications
F; F01; F01K; F01K25/00; F01K25/08; F01K23/00; F01K23/02
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
144 words
A power plant system for producing power using a source of steam, comprising: a) a vaporizer into which steam from a source of steam is supplied, for vaporizing organic working fluid flowing through said vaporizer; b) at least one organic vapor turbine to which said vaporized working fluid is supplied and which is suitable for generating electricity and producing expanded organic vapor; c) a recuperator for heating organic vapor condensate flowing towards said vaporizer using said expanded organic vapor exhausted from said organic vapor turbine; and d) two or more stages of preheaters for additionally heating organic working fluid exiting said recuperator and flowing towards said vaporizer, wherein a portion of the organic working fluid exiting said recuperator bypasses one of said stages of preheaters and is supplied, together with working fluid exiting said one of said stages, to a further stage of preheaters.
Claim 2
Dependent Claim
144 words
A power plant system for producing power using a source of steam, comprising: a) a vaporizer into which steam from a source of steam is supplied, for vaporizing organic working fluid flowing through said vaporizer; b) at least one organic vapor turbine to which said vaporized working fluid is supplied and which is suitable for generating electricity and producing expanded organic vapor; c) a recuperator for heating organic vapor condensate flowing towards said vaporizer using said expanded organic vapor exhausted from said organic vapor turbine; and d) two or more stages of preheaters for additionally heating organic working fluid exiting said recuperator and flowing towards said vaporizer, wherein a portion of the organic working fluid exiting said recuperator bypasses one of said stages of preheaters and is supplied, together with working fluid exiting said one of said stages, to a further stage of preheaters.
Claim 3
Dependent Claim
155 words
A power plant system for producing power using a source of steam, comprising: a) a vaporizer into which steam from a source of steam is supplied, for vaporizing organic working fluid flowing through said vaporizer; b) at least one organic vapor turbine to which said vaporized working fluid is supplied and which is suitable for generating electricity and producing expanded organic vapor; c) a recuperator for heating organic vapor condensate flowing towards said vaporizer using said expanded organic vapor exhausted from said organic vapor turbine; and d) two or more stages of preheaters for additionally heating organic working fluid exiting said recuperator and flowing towards said vaporizer, wherein fluid extracted from said at least one organic vapor turbine is delivered to one of said stages of preheaters, wherein heat-depleted extracted fluid exiting said one of said stages of preheaters is supplied to a further stage preheater at a suitable location in the further stage preheater.
Claim 4
Dependent Claim
155 words
A power plant system for producing power using a source of steam, comprising: a) a vaporizer into which steam from a source of steam is supplied, for vaporizing organic working fluid flowing through said vaporizer; b) at least one organic vapor turbine to which said vaporized working fluid is supplied and which is suitable for generating electricity and producing expanded organic vapor; c) a recuperator for heating organic vapor condensate flowing towards said vaporizer using said expanded organic vapor exhausted from said organic vapor turbine; and d) two or more stages of preheaters for additionally heating organic working fluid exiting said recuperator and flowing towards said vaporizer, wherein fluid extracted from said at least one organic vapor turbine is delivered to one of said stages of preheaters, wherein heat-depleted extracted fluid exiting said one of said stages of preheaters is supplied to a further stage preheater at a suitable location in the further stage preheater.
Claim 5
Dependent Claim
16 words
The power plant system according to claim 1 , wherein source of steam is geothermal steam.
Claim 6
Dependent Claim
17 words
The power plant system according to claim 1 , wherein source of steam is industrially generated steam.
Claim 7
Dependent Claim
23 words
The power plant system according to claim 1 , wherein said power plant further comprises a condenser for producing organic working fluid condensate.
Claim 8
Dependent Claim
17 words
The power plant system according to claim 1 , wherein three stages of preheating means are employed.
Claim 9
Dependent Claim
33 words
The power plant system according to claim 1 , further comprising extraction means for extracting fluid from said organic vapor turbine and delivering the extracted fluid to one of said stages of preheaters.
Claim 10
Dependent Claim
68 words
The power plant system according to claim 1 , wherein said organic vapor turbine is a high pressure organic fluid turbine, whereby a portion of the vapor exhausted from said high pressure organic fluid turbine is delivered to a low pressure organic fluid turbine and a further portion of the vapor exhausted from said high pressure organic fluid turbine is delivered to one of said stages of preheaters.
Claim 11
Dependent Claim
45 words
The power plant system according to claim 8 , wherein said one of said stages of preheaters to which said further portion of the vapor exhausted from said high pressure organic fluid turbine is delivered is a heater, whereby organic fluid passing therethrough is heated.
Claim 12
Dependent Claim
34 words
The power plant system according to claim 7 , wherein the preheater stage to which fluid extracted from the organic vapor turbine is supplied is a heater, whereby organic fluid passing therethrough is heated.
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) | 2013-09-20 | 2014-03-22 | 2014-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2017-09-20 | 2018-03-22 | 2018-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2021-09-20 | 2022-03-22 | 2022-09-21 | $7700.00 | Window Closed / Lapsed |