US6880344B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined rankine and vapor compression cycles
Assignee: NANJING TICA AIR-CONDITIONING Co Ltd
•
Filing: 2003-06-17
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Granted: 2005-04-19
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Expires: 2023-06-17
Abstract
Abstract An organic rankine cycle system is combined with a vapor compression cycle system with the turbine generator of the organic rankine cycle generating the power necessary to operate the motor of the refrigerant compressor. The vapor compression cycle is applied with its evaporator cooling the inlet air into a gas turbine, and the organic rankine cycle is applied to receive heat from a gas turbine exhaust to heat its boiler within one embodiment, a common condenser is used for the organic rankine cycle and the vapor compression cycle, with a common refrigerant, R-245a being circulated within both systems. In another embodiment, the turbine driven generator has a common shaft connected to the compressor to thereby eliminate the need for a separate motor to drive the compressor. In another embodiment, an organic rankine cycle system is applied to an internal combustion engine to cool the fluids thereof, and the turbo charged air is cooled first by the organic rankine cycle system and then by an air conditioner prior to passing into the intake of the engine.
Inventors
- 👤 Thomas D. Radcliff
- 👤 Bruce P. Biederman
- 👤 Joost J. Brasz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:44
CPC Classifications
F; F01; F01K; F01K23/00; F01K23/02; F01K23/06; F01K23/08; F01K23/10; F02; F02C; F02C6/00; F02C6/18; F25; F25B; F25B27/00; Y; Y02; Y02E; Y02E50/00; Y02E50/10; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
114 words
An energy recovery system of the type wherein heat is extracted from an engine by refrigerant passing through a heat exchanger of an organic rankine cycle system, comprising: a turbo charger for receiving ambient air and increasing the pressure and temperature thereof; a first heat exchanger in said organic rankine cycle system for receiving said higher temperature air from said turbo charger and for cooling it to a reduced temperature; an air conditioner with an evaporator in heat exchange relationship with said reduced temperature air for cooling it to a further reduced temperature; and an air intake opening in said engine for receiving said further reduced temperature air to support combustion in said engine.
Claim 2
Dependent Claim
114 words
An energy recovery system of the type wherein heat is extracted from an engine by refrigerant passing through a heat exchanger of an organic rankine cycle system, comprising: a turbo charger for receiving ambient air and increasing the pressure and temperature thereof; a first heat exchanger in said organic rankine cycle system for receiving said higher temperature air from said turbo charger and for cooling it to a reduced temperature; an air conditioner with an evaporator in heat exchange relationship with said reduced temperature air for cooling it to a further reduced temperature; and an air intake opening in said engine for receiving said further reduced temperature air to support combustion in said engine.
Claim 3
Dependent Claim
22 words
An energy recovery system as set forth in claim 1 wherein said turbo charger is driven by exhaust gases from said engine.
Claim 4
Dependent Claim
28 words
An energy recovery system as set forth in claim 1 wherein said organic rankine cycle includes a second heat exchanger for transferring heat from engine coolant passing therethrough.
Claim 5
Dependent Claim
28 words
An energy recovery system as set forth in claim 1 wherein said organic rankine cycle includes a second heat exchanger for transferring heat from engine lubricant passing therethrough.
Claim 6
Dependent Claim
29 words
An energy recovery system as set forth in claim 1 wherein said organic rankine cycle includes a second heat exchanger for transferring heat from engine exhaust gases passing therethrough.
Claim 7
Dependent Claim
25 words
An energy recovery system as set forth in claim 1 wherein said first heat exchanger cools said higher temperature air down to below 125° F.
Claim 8
Dependent Claim
24 words
An energy recovery system as set forth in claim 1 wherein said air conditioner cools said reduced temperature air down to below 60° F.
Claim 9
Independent Claim
99 words
A method of recovering waste heat from engine with an organic rankine cycle system comprising the steps of: providing a turbo charger for receiving ambient air and increasing the pressure and temperature thereof; providing a first heat exchanger in said organic rankine cycle for receiving said higher temperature air from said turbo charger and for cooling it to a reduced temperature; providing an air conditioner with a evaporator in heat exchange relationship with said reduced temperature air for cooling it to a further reduced temperature; and passing said further reduced temperature air to an air intake of said engine.
Claim 10
Independent Claim
99 words
A method of recovering waste heat from engine with an organic rankine cycle system comprising the steps of: providing a turbo charger for receiving ambient air and increasing the pressure and temperature thereof; providing a first heat exchanger in said organic rankine cycle for receiving said higher temperature air from said turbo charger and for cooling it to a reduced temperature; providing an air conditioner with a evaporator in heat exchange relationship with said reduced temperature air for cooling it to a further reduced temperature; and passing said further reduced temperature air to an air intake of said engine.
Claim 11
Dependent Claim
28 words
A method as set forth in claim 8 and including the step of applying exhaust gases from said engine to said turbo charger for providing motive power thereto.
Claim 12
Dependent Claim
26 words
A method as set forth in claim 8 and including the step of providing a second heat exchanger for transferring heat from engine coolant passing therethrough.
Claim 13
Dependent Claim
26 words
A method as set forth in claim 8 and including the step of providing a second heat exchanger for transferring heat from engine lubricant passing therethrough.
Claim 14
Dependent Claim
27 words
A method as set forth in claim 8 and including the step of providing a second heat exchanger for transferring heat from engine exhaust gases passing therethrough.
Claim 15
Dependent Claim
31 words
A method as set forth in claim 8 wherein said step of cooling said higher temperature air to a reduced temperature reduces the temperature from about 200 to below 125° F.
Claim 16
Dependent Claim
33 words
A method as set forth in claim 8 wherein said step of cooling said reduced temperature air to a further reduced temperature cools the air from about 100° F. t below 60° F.
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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) | 2008-04-18 | 2008-10-18 | 2009-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2012-04-18 | 2012-10-18 | 2013-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2016-04-18 | 2016-10-18 | 2017-04-19 | $7700.00 | Window Closed / Lapsed |