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(12)United States Patent Wright et a1. (54) TURBO-ALTERNATOR-COMPRESSOR DESIGN FOR SUPERCRITICAL HIGH DENSITYWORKING FLUIDS (76) Inventors: StevenA.Wright,Albuquerque,NM (US); Robert L. Fuller, Conifer, CO (Us) Subjecttoanydisclaimer,thetermofthis patent is extended or adjusted under 35 USC 154(b)by868days. (10) Patent N0.: US 8,397,506 B1 (45) Date of Patent: Mar. 19, 2013 Wright S.A., Preliminary Results of Dynamic System Model for a Closed-LoopBraytonCycleCoupledtoaNuclearReactor,Proceed ings 1st Intl. Energy Conversion Engineering Conf, (Aug. 17-21, 2003),Portsmouth,VA. Steven A. Wright, Measured and Modeled Turbomachinery Operat ingCharacteristicsinaClosedBraytonCycleTestLoop,ANS Winter Meeting, (Nov. 12-16, 2006) pp. 855-857, Albuquerque, NM. S. A. Wright, Robert Fuller, et. al., Operational Results of a Closed BraytonCycleTest-Loop,ProceedingsofSpaceTech.andApps.Intl. Forum (STAIF-2005) (Feb. 2005), p. 699, Albuquerque, NM. S. A. Wright, and R. J. Lipinski, Operational Curves for HTGR’s Coupled to Closed Brayton Cycle Power Conversion Systems, in Proceedings ofIntl. Congress on Advances in Nuclear Power Plants (Jun.4-8,2006),Reno,Nevada. S.A. Wright and R. J.Lipinski, Self-Driven Decay Heat Removal in aGCR ClosedBraytonCyclePowerSystem,ProceedingsofIntl. Congress on Advances in Nuclear Power Plants, (Jun. 4-8, 2006) , Reno,NV. S.A. Wright and PS. Pickard, Impact of Closed Brayton Cycle Test ResultsonGasCooledReactorOperationandSafety,inProceedings ofIntl.CongressonAdvancesinNuclearPowerPlants(May 13-18, 2007),Nice,France. (Continued) PrimaryExaminer* HoangNguyen (74)Attorney,Agent,orFirm* DanielJ.Jenkins (57) ABSTRACT Techniques for generating poWer are provided. Such tech niquesinvolveathermodynamicsystemincludingahousing, a turbine positioned in a turbine cavity of the housing, a compressorpositionedinacompressorcavityofthehousing, and an alternator positioned in a rotor cavity betWeen the turbine and compressor cavities. The compressor has a high pressure face facing an inlet of the compressor cavity and a loW-pressure face on an opposite side thereof. The altemator has a rotor shaft operatively connected to the turbine and compressor, and is supported in the housing by bearings. RidgesextendingfromtheloW-pressurefaceofthecompres sormay beprovidedforbalancingthrustacrossthecompres sor. Seals may be positioned about the alternator for selec tively leaking ?uid into the rotor cavity to reduce the temperaturetherein. 29 Claims, 5 Drawing Sheets (*) Notice: (21) Appl.N0.: 12/477,259 (22) Filed: (51) Int.C]. F 01K 1/00 F 01D 11/00 (52) US. Cl. .. 60/643; 60/645; 60/650; 60/682; 415/110 (58) Field of Classi?cation Search ................... 60/643, 60/645,605.2,650,682; 415/11(L113 (56) Seeapplication?leforcompletesearchhistory. References Cited U.S.PATENTDOCUMENTS 4,370,106 4,659,288 5,024,057 5,074,115 6,145,313 7,946,118 B2* Lauterbach .................. 417/407 Clarketa1. . 416/186R KaWamura 60/597 2004/0057847 A1* 2006/0123785 A1* 2008/0038109 A1* 2009/0066090 A1 5/2011 3/2004 Wild ........... 6/2006 Sundinetal. 2/2008 Sandstede et a1. .. 415/111 3/2009 Booneeta1. Jun.3,2009 (2006.01) A * 1/1983 A * 4/1987 A * 6/1991 A * 12/1991 A * 11/2000 KaWamura Arnold ........ Hippeneta1. . 60/608 . 60/6052 .60/605.3 (2006.01) OTHER PUBLICATIONS C. Dellacorte, Gas Bearing Development for SCO2 Applications, PresentationatNASA GlennResearchCenter,(2006)Cleveland, Ohio. /H’ 124 135 118 K 417/407 60/612 182‘102(12 108182 US008397506B1PDF Image | United States Patent Wright et a1. TURBO-ALTERNATOR-COMPRESSOR DESIGN FOR SUPERCRITICAL HIGH DENSITYWORKING FLUIDS
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