Patent US7013644B2 successfully refreshed from Google Patents.
US7013644B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Organic rankine cycle system with shared heat exchanger for use with a reciprocating engine
Assignee: NANJING TICA AIR-CONDITIONING Co Ltd
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Filing: 2003-11-18
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Granted: 2006-03-21
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Expires: 2023-11-18
Abstract
Abstract In order to effectively extract the waste heat from a reciprocating engine, the normal heat exchanger components of an engine are replaced with one or more heat exchangers which have the motive fluid of an organic rankine cycle system flowing therethrough. With the heat transfer in the plurality of heat exchangers, the engine is maintained at a reasonable cool temperature and the extracted heat is supplied to an ORC turbine to generate power. The heat is derived from a plurality of sources within the reciprocating engine, and at least two of those sources have their fluids passing through the same heat exchanger. In one embodiment, the engine coolant and the engine lubricant pass through the heat exchanger in the same direction, and the ORC motive fluid passes therethrough in a counterflow relationship.
Inventors
- 👤 Thomas D. Radcliff
- 👤 Bruce P. Biederman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:06
CPC Classifications
F; F01; F01K; F01K23/00; F01K23/02; F01K23/06; F01K23/065
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
132 words
An energy recovery system of the type wherein heat is extracted from an engine by refrigerant passing through an heat exchanger of an organic rankine cycle system, comprising: a single heat exchanger for transferring heat from said engine to an organic rankine cycle fluid flowing through said heat exchanger; a turbine for receiving said heated fluid from said heat exchanger and for transferring a thermal energy to motive power, with said fluid being cooled in process; a condenser for receiving said cooled fluid and for further cooling said fluid to cause it to change to a liquid state; a circulation means for receiving said liquid refrigerant and circulating it to said single heat exchanger; wherein said single heat exchanger is adapted to transfer heat from a plurality of sources within said engine.
Claim 2
Dependent Claim
132 words
An energy recovery system of the type wherein heat is extracted from an engine by refrigerant passing through an heat exchanger of an organic rankine cycle system, comprising: a single heat exchanger for transferring heat from said engine to an organic rankine cycle fluid flowing through said heat exchanger; a turbine for receiving said heated fluid from said heat exchanger and for transferring a thermal energy to motive power, with said fluid being cooled in process; a condenser for receiving said cooled fluid and for further cooling said fluid to cause it to change to a liquid state; a circulation means for receiving said liquid refrigerant and circulating it to said single heat exchanger; wherein said single heat exchanger is adapted to transfer heat from a plurality of sources within said engine.
Claim 3
Dependent Claim
25 words
A system as set forth in claim 1 wherein said single heat exchanger is adapted to conduct the flow of two different engine fluids therethrough.
Claim 4
Dependent Claim
23 words
A system as set forth in claim 2 wherein said single heat exchanger is so adapted as to have engine coolant passing therethrough.
Claim 5
Dependent Claim
23 words
A system as set forth in claim 2 wherein said single heat exchanger is so adapted as to have engine lubricant passing therethrough.
Claim 6
Dependent Claim
27 words
A system as set forth in claim 2 wherein the flow of said two different engine fluids is in the same direction through said single heat exchanger.
Claim 7
Dependent Claim
24 words
A system as set forth in claim 5 wherein said ORC flow is in a direction opposite to said two different engine fluid flows.
Claim 8
Dependent Claim
24 words
A system as set forth in claim 2 wherein the temperature of said two different engine fluids are in the range of -to-□ F.
Claim 9
Dependent Claim
22 words
A system as set forth in claim 2 wherein said two different engine fluids comprise an engine coolant and an engine lubricant.
Claim 10
Independent Claim
120 words
A method of operating a waste heat recovery system having an organic rankine cycle with its motive fluid in heat exchange relationship with relatively hot fluids of an engine, comprising the steps of: circulating a relatively cool motive fluid from a condenser of said organic rankine cycle through at least one heat exchanger; circulating a plurality of relatively hot fluids from said engine through said at least one heat exchanger to thereby heat said motive fluid and cool said plurality of fluids; circulate said heated motive fluid through a turbine for providing motive power thereto while cooling said motive fluid; circulating said cooled motive fluid to said condenser; and circulating said plurality of cooled engine fluids back to said engine.
Claim 11
Independent Claim
120 words
A method of operating a waste heat recovery system having an organic rankine cycle with its motive fluid in heat exchange relationship with relatively hot fluids of an engine, comprising the steps of: circulating a relatively cool motive fluid from a condenser of said organic rankine cycle through at least one heat exchanger; circulating a plurality of relatively hot fluids from said engine through said at least one heat exchanger to thereby heat said motive fluid and cool said plurality of fluids; circulate said heated motive fluid through a turbine for providing motive power thereto while cooling said motive fluid; circulating said cooled motive fluid to said condenser; and circulating said plurality of cooled engine fluids back to said engine.
Claim 12
Dependent Claim
33 words
A method as set forth in claim 9 wherein said step of circulating a plurality of relatively hot fluids includes the step of circulating engine coolant through said at least one heat exchanger.
Claim 13
Dependent Claim
33 words
A method as set forth in claim 9 wherein said step of circulating a plurality of relatively hot fluids includes the step of circulating engine lubricant through said at least one heat exchanger.
Claim 14
Dependent Claim
50 words
A method as set forth in claim 9 wherein said at least one heat exchanger comprises a single heat exchanger and further wherein said step of circulating a plurality of relatively hot fluids includes the step of circulating an engine coolant and an engine lubricant through said single heat exchanger.
Claim 15
Dependent Claim
28 words
A method as set forth in claim 12 wherein said engine coolant and engine lubricant are made to flow through said single heat exchanger in the same direction.
Claim 16
Dependent Claim
41 words
A method as set forth in claim 13 wherein said step of circulating said relatively cool motive fluid is accomplished by causing said motive fluid to flow in a direction opposite to the flow of said engine coolant and engine lubricant.
References Cited (Backward Citations)
US4057715A
Cited
JPS5246244A
Cited
DE2639187A1
Cited
JPS5445419A
Cited
JPS5460634A
Cited
JPS5591711A
Cited
US4386499A
Cited
JPS5888409A
Cited
JPS58122308A
Cited
JPS5963310A
Cited
JPS5943928A
Cited
JPS5954712A
Cited
JPS59138707A
Cited
JPS59158303A
Cited
US4590384A
Cited
US4760705A
Cited
JPS60158561A
Cited
US4617808A
Cited
US4901531A
Cited
US5038567A
Cited
US5119635A
Cited
US5056315A
Cited
JPH0688523A
Cited
US5664419A
Cited
US5339632A
Cited
US5598706A
Cited
US5860279A
Cited
US6497090B2
Cited
US5632143A
Cited
US5809782A
Cited
US5640842A
Cited
US6539723B2
Cited
US5761921A
Cited
DE19630559A1
Cited
WO1998006791A1
Cited
US6009711A
Cited
US6101813A
Cited
US6526754B1
Cited
US6571548B1
Cited
DE19907512A1
Cited
EP1243758A1
Cited
US20030089110A1
Cited
DE10029732A1
Cited
US6539720B2
Cited
JP2002266655A
Cited
JP2002285907A
Cited
JP2002285805A
Cited
US20020148225A1
Cited
WO2002099279A1
Cited
US6539718B2
Cited
JP2003061114A
Cited
US20030029169A1
Cited
JP2003161101A
Cited
WO2003078800A1
Cited
US20030218385A1
Cited
US20040088993A1
Cited
US20030167769A1
Cited
US20040255587A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2009-03-20 | 2009-09-19 | 2010-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2013-03-20 | 2013-09-19 | 2014-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2017-03-20 | 2017-09-19 | 2018-03-21 | $7700.00 | Window Closed / Lapsed |