Claims
- 1. A system for transferring heat to a working fluid, including ammonia, comprising:a working fluid source configured to direct a flow of a working fluid which includes ammonia and has a temperature; and a plurality of steel tubes, each tube having a flow passage defined by a treated inner surface, configured to receive the working fluid from the source and to direct the flow of the received working fluid along a path exposed to heat to increase the temperature of the received working fluid.
- 2. A system according to claim 1, wherein:the plurality of tubes is formed of an alloy steel.
- 3. A system according to claim 2, wherein:the plurality of tubes is formed of one of ferritic steel and austenitic steel.
- 4. A system according to claim 1, wherein:the plurality of tubes is formed of steel having a chromium content of up to 18Cr.
- 5. A system according to claim 1, wherein:the plurality of tubes form one of a boiler and a superheater; and the plurality of tubes are configured to transfer the heat to the received working fluid to increase the temperature of the received working fluid.
- 6. A system according to claim 1, wherein:the treated inner surface of each tube is formed by polishing a mill finished surface of each of the plurality of steel tubes.
- 7. A system according to claim 1, wherein:the plurality of steel tubes is a first plurality of steel tubes formed of austenitic steel; the temperature is a first temperature; the working fluid source includes a second plurality of steel tubes formed of other than austenitic steel, each tube having a flow area defined by an inner surface thereof, configured to receive the working fluid in a liquid state and to direct the flow of the received working fluid along a path exposed to heat to increase a temperature of the received working fluid to the first temperature and thereby cause the received working fluid to vaporize; and the first plurality of tubes is configured to receive the vaporized working fluid and to direct the flow of the vaporized working fluid to increase a temperature of the vaporized working fluid to a second temperature which is greater than the first temperature to thereby cause the vaporized working fluid to be in a superheated condition.
- 8. A system according to claim 7, further comprising:a turbine configured to receive the superheated vaporized working fluid and to expand the superheated vaporized working fluid to generate power.
- 9. A system according to claim 1, wherein:the system is a Kalina cycle power generation system; and the working fluid is a binary working fluid formed of ammonia and steam.
- 10. A system according to claim 1, wherein the temperature of the working fluid is increased to a temperature exceeding 500° C.
- 11. A system according to claim 10, wherein the pressure of the working fluid at the increased temperature exceeds 100 bar.
- 12. A system for transferring heat to a working fluid, including ammonia, comprising:a working fluid source configured to direct a flow of a working fluid which includes ammonia and has a temperature; and a plurality of steel tubes, each tube having a flow passage defined by an oxidized inner surface of the tube, configured to receive the working fluid from the source and to direct the flow of the received working fluid along a path exposed to heat to increase the temperature of the received working fluid.
- 13. A system for transferring heat to a working fluid, including ammonia, comprising:a working fluid source configured to direct a flow of a working fluid which includes ammonia and has a pressure substantially greater than ambient pressure; and a mild steel flow tube, having an inner surface defining a flow passage, configured to receive the working fluid from the source and to direct the flow of the received working fluid along a path.
- 14. A system for transferring heat to a working fluid, including ammonia, comprising:a working fluid source configured to direct a flow of a working fluid which includes ammonia and has a temperature; and a plurality of steel tubes, each tube having a flow passage defined by a chromized inner surface of the tube, configured to receive the working fluid from the source and to direct the flow of the received working fluid along a path exposed to heat to increase the temperature of the received working fluid.
- 15. A system for changing the temperature of a working fluid, including ammonia, comprising:a working fluid source configured to direct a flow of a working fluid, including ammonia, at a temperature; and a steel tube, having a treated inner surface defining a flow passage, configured to receive the working fluid from the source and to direct the flow of the received working fluid along a path to change the temperature of the received working fluid.
- 16. A system according to claim 15, wherein:the treated inner surface includes a chromium layer.
- 17. A system according to claim 16 wherein:the chromium layer has a chromium concentration of at least 30% and no more than 50%.
- 18. A system according to claim 15, wherein:the treated inner surface is a polished inner surface.
- 19. A system according to claim 15, wherein:the treated inner surface is an oxidized inner surface.
- 20. A Kalina cycle power generation system, comprising:a plurality of steel tubes configured to heat a binary working fluid including ammonia, each of the plurality of tubes having a treated surface for contacting the binary working fluid and for defining a flow passage for directing a flow of the binary working fluid; and a turbine for receiving the heated binary working fluid from the plurality of tubes and expanding the received heated binary working fluid to generate power.
CROSS-REFERENCE TO RELATED APPLICATIONS
The present application relates to pending U.S. patent application Ser. No. 09/231,165, filed Jan. 13, 1999, for “TECHNIQUE FOR CONTROLLING REGENERATIVE SYSTEM CONDENSATION LEVEL DUE TO CHANGING CONDITIONS IN A KALINA CYCLE POWER GENERATION SYSTEM”; U.S. patent application Ser. No. 09/231,171, filed Jan. 13, 1999, for “TECHNIQUE FOR BALANCING REGENERATIVE REQUIREMENTS DUE TO PRESSURE CHANGES IN A KALINA CYCLE POWER GENERATION SYSTEM”; U.S. patent application Ser. No. 09/229,364, filed Jan. 13, 1999, for “TECHNIQUE FOR CONTROLLING SUPERHEATED VAPOR REQUIREMENTS DUE TO VARYING CONDITIONS IN A KALINA CYCLE POWER GENERATION SYSTEM”; U.S. patent application Ser. No. 09/231,166, filed Jan. 13, 1999, for “TECHNIQUE FOR MAINTAINING PROPER DRUM LIQUID LEVEL IN A KALINA CYCLE POWER GENERATION SYSTEM”; U.S. patent application Ser. No. 09/229,629, filed Jan. 13, 1999, for “TECHNIQUE FOR CONTROLLING DCSS CONDENSATE LEVELS IN A KALINA CYCLE POWER GENERATION SYSTEM”; U.S. patent application Ser. No. 09/229,630, filed Jan. 13, 1999, for “TECHNIQUE FOR MAINTAINING PROPER FLOW IN PARALLEL HEAT EXCHANGERS IN A KALINA CYCLE POWER GENERATION SYSTEM”; U.S. patent application Ser. No. 09/229,631, filed Jan. 13, 1999, for “TECHNIQUE FOR MAINTAINING PROPER VAPOR TEMPERATURE AT THE SUPERHEATER/REHEATER INLET IN A KALINA CYCLE POWER GENERATION SYSTEM”; U.S. patent application Ser. No. 09/231,164, filed Jan. 13, 1999, for “WASTE HEAT KALINA CYCLE POWER GENERATION SYSTEM”; U.S. patent application Ser. No. 09/231,168, filed Jan. 13, 1999, for “REFURBISHING CONVENTIONAL POWER PLANTS FOR KALINA CYCLE OPERATION”; U.S. patent application Ser. No. 09/231,170, filed Jan. 13, 1999, for “STARTUP TECHNIQUE USING MULTIMODE OPERATION IN A KALINA CYCLE POWER GENERATION SYSTEM”; U.S. patent application Ser. No. 09/231,163, filed Jan. 13, 1999, for “TECHNIQUE FOR COOLING FURNACE WALLS IN A MULTI-COMPONENT WORKING FLUID POWER GENERATION SYSTEM”; U.S. patent application Ser. No. 09/229,632, filed Jan. 13, 1999, for “BLOWDOWN RECOVERY SYSTEM IN A KALINA CYCLE POWER GENERATION SYSTEM”; U.S. patent application Ser. No. 09/229,368, filed Jan. 13, 1999, for “REGENERATIVE SUBSYSTEM CONTROL IN A KALINA CYCLE POWER GENERATION SYSTEM”; U.S. patent application Ser. No. 09/229,363, filed Jan. 13, 1999, for “DISTILLATION AND CONDENSATION SUBSYSTEM (DCSS) CONTROL IN A KALINA CYCLE POWER GENERATION SYSTEM”; U.S. patent application Ser. No. 09/229,365, filed Jan. 13, 1999, for “VAPOR TEMPERATURE CONTROL IN A KALINA CYCLE POWER GENERATION SYSTEM”; U.S. patent application Ser. No. 09/229,367, filed Jan. 13, 1999, for “A HYBRID DUAL CYCLE VAPOR GENERATOR”; U.S. patent application Ser. No. 09/231,169, filed Jan. 13, 1999, for “FLUIDIZED BED FOR KALINA CYCLE POWER GENERATION SYSTEM”; U.S. patent application Ser. No. 09/231,167, filed Jan. 13, 1999, for “TECHNIQUE FOR RECOVERING WASTE HEAT USING A BINARY WORKING FLUID”.
US Referenced Citations (15)
Foreign Referenced Citations (3)
Number |
Date |
Country |
0 708 295 A1 |
Oct 1995 |
EP |
01056356 |
Mar 1989 |
JP |
508 594 |
Oct 1998 |
SE |
Non-Patent Literature Citations (10)
Entry |
Kalina Cycles for Efficient Direct Fired Application,-Alexander I. Kalina, Yakov Lerner, Richard I. Pelletier, Exergy, Inc., Lawrence J. Peletz, Jr. ABB CE systems, Combustion engineering, Inc., -7 pgs. (No Date). |
Kalina Cycle Looks Good for Combined Cycle Generation-Dr. James C. Corman, Dr. Robert W. Bjorge, GE Power Systems, Dr. Alexander Kalina, Exergy, Inc., Jul., 1995-3 pgs. |
Power Perspective, The Kalina Cycle-More Electricity From Each BTU of Fuel-1995-3 pgs. |
A Gas Turbine-Aqua Ammonia Combined Power Cycle-Irby Hicks, The Thermosorb Company-Mar. 25, 1996-6 pgs. |
Understanding the Kalina Cycle Fundamentals-H.A. Mlcak, P.E., ABB Lummus Crest-12 pgs (No Date). |
Direct-Fired Kalina Cycle: Overview-ABB-1994-13 pgs. |
Kalina Cycle System Advancements for Direct Fired Power Generation, Michael J. Davidson, Lawrence J. Peletz, ABB Combustion Engineering,-9 pgs (No Date). |
Kalina Cycles and System for Direct-Fired Power Plants, A.I. Kalina, Exergy, Inc., AES-vol. 25/HTD-vol. 191-7 pgs (No Date). |
Masato Taki, et al. “Experimental Study on Rankine Cycle Using Ammonia-Water Mixture as a Working Fluid” Proceedings of the Intersociety Energy Conversion Engineering Conference, vol. Conf 27, Aug. 3, 1992, pp. 3.25-3.34, XP000392714, US San Diego. |
N G Zervos, Stone & Webster Engineering Corp., H M Leibowitz, Exergy Inc., and K. Robinson, Rockwell International corp. “Innovative Kalina Cycle Promises High Efficientcy”, Developments to Watch, Apr., 1992, New York, US, pp. 177-179. |