Patent US4093868A successfully refreshed from Google Patents.
US4093868A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and system utilizing steam turbine and heat pump
Assignee: Carrier Corp
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Filing: 1974-04-29
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Granted: 1978-06-06
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Expires: 1994-04-29
Abstract
Abstract Discharge cooling water from the condenser of a steam turbine is pumped through the chiller of a refrigeration machine operating as a "heat pump" during heating duty, thus improving the efficiency thereof from that obtained when using water supplied to the chiller at a lower temperature. Evaporation of the refrigerant in the chiller removes heat from the water supplied thereto, whereby the water temperature is closer to that of the source from which it is taken for use in the turbine condenser.
Inventors
- 👤 John I. Manning
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:22
CPC Classifications
F; F24; F24D; F24D11/00; F24D11/02; F24D11/0207; F01; F01K; F01K9/00; F01K9/003; Y; Y02; Y02B; Y02B30/00; Y02B30/17
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
123 words
A method of conjointly operating a steam turbine generating plant and a mechanical compression heat pump for heating duty comprising: (a) providing water from a source at ambient temperature to the steam condenser of the generating plant; (b) providing at least a portion of the water discharged from the steam condenser to the chiller of the heat pump for extraction of heat from such water by evaporation of refrigerant in the chiller; (c) discharging the water from the chiller back into said source; (d) circulating water returning from a space heating system through the refrigerant condenser, thereby raising the temperature of such water; and (e) circulating the water from the refrigerant condenser back to the space heating system to provide useful space heating.
Claim 2
Independent Claim
123 words
A method of conjointly operating a steam turbine generating plant and a mechanical compression heat pump for heating duty comprising: (a) providing water from a source at ambient temperature to the steam condenser of the generating plant; (b) providing at least a portion of the water discharged from the steam condenser to the chiller of the heat pump for extraction of heat from such water by evaporation of refrigerant in the chiller; (c) discharging the water from the chiller back into said source; (d) circulating water returning from a space heating system through the refrigerant condenser, thereby raising the temperature of such water; and (e) circulating the water from the refrigerant condenser back to the space heating system to provide useful space heating.
Claim 3
Dependent Claim
23 words
The invention according to claim 1 wherein a portion of the water discharged from the steam condenser is discharged back into said source.
Claim 4
Dependent Claim
24 words
The invention according to claim 1 wherein the evaporating temperature of the refrigerant used in the heat pump is not less than 40° F.
Claim 5
Dependent Claim
42 words
The invention according to claim 3 wherein the heating duty of the heat pump comprises circulating through said refrigerant condenser not less than 500 gallons of water per minute and thereby raising the temperature thereof by not less than approximately 10° F.
Claim 6
Dependent Claim
13 words
The invention according to claim 1 wherein said source is a cooling tower.
Claim 7
Dependent Claim
15 words
The invention according to claim 1 wherein said source is a natural body of water.
Claim 8
Dependent Claim
188 words
A combined electrical generating and space heating system comprising, in combination: (a) a steam turbine generating plant including a boiler, a turbine, an electrical generator driven by said turbine, and a steam condenser; (b) means providing water from a source at ambient temperature to said steam condenser for circulation from an inlet to an outlet thereof to effect condensation of steam discharged from said turbine, thereby raising the temperature of said water above said ambient temperature; (c) a mechanical compression heat pump connected for heating duty including a refrigerant condenser, a compressor and a chiller wherein refrigerant is evaporated by absorbing heat from a fluid circulated through said chiller from an inlet to an outlet thereof; (d) means connecting said steam condenser outlet to said heat pump chiller inlet for supplying water above said ambient temperature as the fluid circulated through said chiller; (e) means for circulating the water returning from a space heating system through said refrigerant condenser, thereby raising the temperature of such water; and (f) means for circulating the water from the refrigerant condenser back to the space heating system to provide useful space heating.
Claim 9
Dependent Claim
188 words
A combined electrical generating and space heating system comprising, in combination: (a) a steam turbine generating plant including a boiler, a turbine, an electrical generator driven by said turbine, and a steam condenser; (b) means providing water from a source at ambient temperature to said steam condenser for circulation from an inlet to an outlet thereof to effect condensation of steam discharged from said turbine, thereby raising the temperature of said water above said ambient temperature; (c) a mechanical compression heat pump connected for heating duty including a refrigerant condenser, a compressor and a chiller wherein refrigerant is evaporated by absorbing heat from a fluid circulated through said chiller from an inlet to an outlet thereof; (d) means connecting said steam condenser outlet to said heat pump chiller inlet for supplying water above said ambient temperature as the fluid circulated through said chiller; (e) means for circulating the water returning from a space heating system through said refrigerant condenser, thereby raising the temperature of such water; and (f) means for circulating the water from the refrigerant condenser back to the space heating system to provide useful space heating.
Claim 10
Dependent Claim
15 words
The invention according to claim 7 wherein said source is a natural body of water.
Claim 11
Dependent Claim
28 words
The invention according to claim 8 and further including means connecting said heat pump chiller outlet for discharge of the water circulated through said chiller into said source.
Claim 12
Dependent Claim
33 words
The invention according to claim 7 and further including means connecting said steam condenser outlet for discharge of at least a portion of the water circulated through said steam condenser into said source.
Claim 13
Dependent Claim
33 words
The invention according to claim 9 and further including means for selectively controlling the proportions of water from said steam condenser outlet supplied to said heat pump chiller and discharged into said source.
Claim 14
Dependent Claim
13 words
The invention according to claim 7 wherein said source is a cooling tower.
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) | 1981-06-05 | 1981-12-05 | 1982-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-05 | 1985-12-05 | 1986-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-05 | 1989-12-05 | 1990-06-06 | $7700.00 | Window Closed / Lapsed |