Patent US3796045A successfully refreshed from Google Patents.
US3796045A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for increasing power output and/or thermal efficiency of a gas turbine power plant
Assignee: TURBO DEV Inc
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Filing: 1971-07-15
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Granted: 1974-03-12
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Expires: 1991-07-15
Abstract
Abstract A gas turbine power plant having a modified gas turbine cycle (Brayton cycle) wherein the compressor inlet air is super-chilled before it enters the compressor. Superchilling, as defined herein, means to supercharge the inlet air to increase the pressure thereof to a pressure level moderately greater than the atmospheric pressure and to chill the supercharged air to decrease the temperature thereof, the preferred temperature level being in the vicinity of about 40* Fahrenheit. A heat recovery cycle is provided to supply the energy necessary to superchill the compressor inlet air.
Inventors
- 👤 Pegg R Foster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:12
CPC Classifications
F; F02; F02C; F02C7/00; F02C7/12; F02C7/14; F02C7/141; F02C7/143; F01; F01K; F01K23/00; F01K23/02; F01K23/06; F01K23/10; F01K27/00; F01K27/02; F02C7/08; F02C7/10
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
208 words
An improved gas turbine having increased performance, the gas turbine including a compressor for receiving inlet gas and compressing the same, means for heating the compressed gas, and a turbine for expanding the heated compressed gas, the improvement comprising; a. means for supercharging the inlet gas before it is received by the compressor; and b. means for chilling the supercharged inlet gas before it is received by the compressor, the chilling means including a refrigerant for the direct transfer of heat from the supercharged gas thereto; and c. means for regeneratively heating the compressed gas from the compressor with waste-heat from the exhaust gases of the turbine before the compressed gas passes to the compressed gas heating means; and d. means for recovering a portion of the waste-heat energy from the exhaust gases of the turbine and for converting the wasteheat energy into energy for driving the supercharging means and for driving the chilling means; and e. means for selectively controlling the portion of the wasteheat energy converted to energy for driving the supercharging means and for driving the chilling means for providing selective control over the amount of energy available to superchill the inlet gas thereby providing for selective control of the performance of the gas turbine.
Claim 2
Dependent Claim
208 words
An improved gas turbine having increased performance, the gas turbine including a compressor for receiving inlet gas and compressing the same, means for heating the compressed gas, and a turbine for expanding the heated compressed gas, the improvement comprising; a. means for supercharging the inlet gas before it is received by the compressor; and b. means for chilling the supercharged inlet gas before it is received by the compressor, the chilling means including a refrigerant for the direct transfer of heat from the supercharged gas thereto; and c. means for regeneratively heating the compressed gas from the compressor with waste-heat from the exhaust gases of the turbine before the compressed gas passes to the compressed gas heating means; and d. means for recovering a portion of the waste-heat energy from the exhaust gases of the turbine and for converting the wasteheat energy into energy for driving the supercharging means and for driving the chilling means; and e. means for selectively controlling the portion of the wasteheat energy converted to energy for driving the supercharging means and for driving the chilling means for providing selective control over the amount of energy available to superchill the inlet gas thereby providing for selective control of the performance of the gas turbine.
Claim 3
Dependent Claim
176 words
An improved gas turbine having increased performance, the gas turbine including a compressor for receiving inlet gas and compressing the same, means for heating the compressed gas, and a turbine for expanding the heated compressed gas, the improvement comprising: a. means for supercharging the inlet gas before it is received by the compressor; and b. means for chilling the supercharged inlet gas before it is received by the compressor, the chilling means including a refrigerant for the direct transfer of heat from the supercharged gas thereto; and c. means for recovering a portion of the wasteheat energy from the exhaust gases of the turbine and for converting the waste-heat energy intO energy for driving the supercharging means and for driving the chilling means; and d. means for selectively controlling the portion of the waste-heat energy converted to energy for driving the supercharging means and for driving the chilling means for providing selective control over the amount of energy available to superchill the inlet gas thereby providing for selective control of the performance of the gas turbine.
Claim 4
Dependent Claim
176 words
An improved gas turbine having increased performance, the gas turbine including a compressor for receiving inlet gas and compressing the same, means for heating the compressed gas, and a turbine for expanding the heated compressed gas, the improvement comprising: a. means for supercharging the inlet gas before it is received by the compressor; and b. means for chilling the supercharged inlet gas before it is received by the compressor, the chilling means including a refrigerant for the direct transfer of heat from the supercharged gas thereto; and c. means for recovering a portion of the wasteheat energy from the exhaust gases of the turbine and for converting the waste-heat energy intO energy for driving the supercharging means and for driving the chilling means; and d. means for selectively controlling the portion of the waste-heat energy converted to energy for driving the supercharging means and for driving the chilling means for providing selective control over the amount of energy available to superchill the inlet gas thereby providing for selective control of the performance of the gas turbine.
Claim 5
Dependent Claim
158 words
An improved gas turbine having increased performance, the gas turbine including a compressor for receiving inlet gas and compressing the same, means for heating the compressed gas, and a turbine for expanding the heated compressed gas, the improvement comprising: a. means for supercharging the inlet gas before it is received by the compressor; and b. means for chilling the supercharged inlet gas before it is received by the compressor; and c. means for recovering a portion of the waste-heat energy from the exhaust gases of the turbine and for converting the waste-heat energy into energy for driving the supercharging means and for driving the chilling means; d. means for selectively controlling the portion of the waste-heat energy converted to energy for driving the supercharging means and for driving the chilling means for providing selective control over the amount of energy available to superchill the inlet gas thereby providing for selective control of the performance of the gas turbine.
Claim 6
Dependent Claim
158 words
An improved gas turbine having increased performance, the gas turbine including a compressor for receiving inlet gas and compressing the same, means for heating the compressed gas, and a turbine for expanding the heated compressed gas, the improvement comprising: a. means for supercharging the inlet gas before it is received by the compressor; and b. means for chilling the supercharged inlet gas before it is received by the compressor; and c. means for recovering a portion of the waste-heat energy from the exhaust gases of the turbine and for converting the waste-heat energy into energy for driving the supercharging means and for driving the chilling means; d. means for selectively controlling the portion of the waste-heat energy converted to energy for driving the supercharging means and for driving the chilling means for providing selective control over the amount of energy available to superchill the inlet gas thereby providing for selective control of the performance of the gas turbine.
Claim 7
Dependent Claim
40 words
An improved gas turbine according to claim 3, further comprising means for regneratively heating the compressed gas from the compressor with waste-heat from the exhaust gases of the turbine before the compressed gas passes to the compressed gas heating means.
Claim 8
Independent Claim
200 words
A method for increasing the performance of a gas turbine, the gas turbine including a compressor for receiving inlet gas and compressing the same, means for heating the compressed gas, and a turbine for expanding the heated compressed gas to extract work therefrom, the method comprising the steps of: a. supercharging the inlet gas by a fan or a blower device before it is received by the compressor by increasing the pressure of the inlet gas in accordance with a supercharging pressure ratio in a range of pressure ratios extending from about 1.1 to about 1.75; b. chilling the supercharged inlet gas before it is received by the compressor by the direct transfer of heat from the supercharged gas to the refrigerant of a refrigeration system; c. regeneratively heating the compressed gas from the compressor with waste-heat from the exhaust gases of the turbine; d. recovering a portion of the waste-heat energy from the exhaust gases of the turbine and converting the waste-heat energy into energy for superchilling the compressor inlet air; and e. selectively controlling the portion of the waste-heat energy converted to energy for superchilling the compressor inlet air thereby selectively controlling the performance of the gas turbine.
Claim 9
Independent Claim
200 words
A method for increasing the performance of a gas turbine, the gas turbine including a compressor for receiving inlet gas and compressing the same, means for heating the compressed gas, and a turbine for expanding the heated compressed gas to extract work therefrom, the method comprising the steps of: a. supercharging the inlet gas by a fan or a blower device before it is received by the compressor by increasing the pressure of the inlet gas in accordance with a supercharging pressure ratio in a range of pressure ratios extending from about 1.1 to about 1.75; b. chilling the supercharged inlet gas before it is received by the compressor by the direct transfer of heat from the supercharged gas to the refrigerant of a refrigeration system; c. regeneratively heating the compressed gas from the compressor with waste-heat from the exhaust gases of the turbine; d. recovering a portion of the waste-heat energy from the exhaust gases of the turbine and converting the waste-heat energy into energy for superchilling the compressor inlet air; and e. selectively controlling the portion of the waste-heat energy converted to energy for superchilling the compressor inlet air thereby selectively controlling the performance of the gas turbine.
Claim 10
Dependent Claim
236 words
An improved gas turbine having increased performance, the gas turbine including a compressor for receiving inlet gas and compressing the same, means for heating the compressed gas, and a turbine for expanding the heated compressed gas, the improvement comprising: a. fan or blower means for supercharging the inlet gas before it is received by the compressor by increasing the pressure of the inlet gas in accordance with a supercharging pressure ratio in a range of pressure ratios extending from about 1.1 to about 1.75; b. means for chilling the supercharged inlet gas before it is received by the compressor, the chilling means including a refrigerant for the direct transfer of heat from the supercharged gas thereto; c. means for regeneratively heating the compressed gas from the compressor with waste-heat from the exhaust gases of the turbine before the compressed gas passes to the compressed gas heating means; d. means for recovering a portion of the waste-heat energy from the exhAust gases of the turbine and for converting the waste-heat energy into energy for driving the supercharging means and for driving the chilling means; and e. means for selectively controlling the portion of the waste-heat energy converted to energy for driving the supercharging means and for driving the chilling means for providing selective control over the amount of energy available to superchill the inlet gas thereby providing for selective control of the performance of the gas turbine.
Claim 11
Dependent Claim
236 words
An improved gas turbine having increased performance, the gas turbine including a compressor for receiving inlet gas and compressing the same, means for heating the compressed gas, and a turbine for expanding the heated compressed gas, the improvement comprising: a. fan or blower means for supercharging the inlet gas before it is received by the compressor by increasing the pressure of the inlet gas in accordance with a supercharging pressure ratio in a range of pressure ratios extending from about 1.1 to about 1.75; b. means for chilling the supercharged inlet gas before it is received by the compressor, the chilling means including a refrigerant for the direct transfer of heat from the supercharged gas thereto; c. means for regeneratively heating the compressed gas from the compressor with waste-heat from the exhaust gases of the turbine before the compressed gas passes to the compressed gas heating means; d. means for recovering a portion of the waste-heat energy from the exhAust gases of the turbine and for converting the waste-heat energy into energy for driving the supercharging means and for driving the chilling means; and e. means for selectively controlling the portion of the waste-heat energy converted to energy for driving the supercharging means and for driving the chilling means for providing selective control over the amount of energy available to superchill the inlet gas thereby providing for selective control of the performance of the gas turbine.
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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) | 1977-03-11 | 1977-09-10 | 1978-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-11 | 1981-09-10 | 1982-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-11 | 1985-09-10 | 1986-03-12 | $7700.00 | Window Closed / Lapsed |