ENHANCING POWER CYCLE EFFICIENCY FOR A Supercritical Brayton

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ENHANCING POWER CYCLE EFFICIENCY FOR A Supercritical Brayton ( enhancing-power-cycle-efficiency-for-supercritical-brayton )

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US 2013/0033044A1 Feb.7,2013 device 600 includes at least one processor 602 that executes instructionsthatarestoredinamemory 604.Thememory 604 may beorincludeRAM, ROM, EEPROM, Flashmemory, or othersuitablememory. The instructionsmay be,forinstance, instructions for implementing functionality described as being carriedoutby one ormore components discussedabove or instructions for implementing one or more ofthe methods described above. The processor 602 may access the memory 604byWay ofasystembus606.Inadditiontostoringexecut able instructions, the memory 604 may also store environ mentalconditions,systemdata,etc. [0050] Thecomputingdevice600additionallyincludesa data store 608 that isaccessible by the processor 602 by Way ofthe system bus 606. The data store 608 may be or include any suitable computer-readable storage, including a hard disk,memory, etc.The datastore608 may includeexecutable instructions,environmentalconditions,systemdata,etc.The computing device 600 also includes an input interface 610 that alloWs external devices to communicate With the com puting device 600. For instance, the input interface 610 may be used to receive instructions from an external computer device, a user, etc. The computing device 600 also includes an outputinterface612thatinterfacesthecomputingdevice600 With one or more external devices. For example, the comput ingdevice600may displaytext,images,etc.byWay ofthe outputinterface612. [0051] Additionally,Whileillustratedasasinglesystem,it istobeunderstoodthatthecomputingdevice600may bea distributedsystem.Thus,forinstance,severaldevicesmaybe incommunicationbyWay ofanetWorkconnectionandmay collectivelyperformtasksdescribedasbeingperformedby the computing device 600. [0052] Itisnotedthatseveralexampledesignsofsupercriti calBraytoncyclepoWergenerationsystemshavebeenpro vided for purposes of explanation. It is to be understood that various features across designs can be combined to create a different supercritical Brayton cycle poWer generation sys tem.Further,theexemplarydesignsarenottobeconstruedas limitingthehereto-appendedclaims.Additionally,itmay be recogniZed that some examples provided herein may be per mutated While stilfallingunder the scope ofthe claims. What isclaimedis: 1.A supercriticalBraytoncyclepoWergenerationsystem, comprising: a heat source that comprises an inletport and an outlet port, theheatsourceheatinga?uidinthesupercriticalBray ton cycle poWer generation system, the ?uid being a mixture that causes the ?uid to have a supercritical tem perature that is optimiZed for at least one environmental conditionpertainingtotheBraytoncyclepoWergenera tionsystem; a?rstturbinethatcomprisesaninletportandanoutletport; ?rstpipingthatoperablycouplestheheatsourceWiththe inletportofthe?rstturbine,the?rstpipingincludingthe ?uid; a heat rejector that comprises an inlet port and an outlet port,theheatrejectorrejectingheatnearthesupercriti caltemperatureofthe?uid; secondpipingthatoperablycouplestheoutletportofthe ?rst turbine With the inlet port of the heat rejector, the secondpipingincludingthe?uid; thirdpipingthatoperablycouplestheoutletportoftheheat rejector With the inlet port of the compressor, the ?uid travelling from the heat rejector to the compressor by Way ofthethirdpiping; a generator that generates electric poWer; a rotating shaft that couples the ?rst turbine With the gen erator,Whereinrotationoftheshaftcausesthegenerator to generate the electric poWer; and fourthpipingthatoperablycouplestheoutletportofthe compressor With the inlet port of the heat source, Whereinthe?uidtravelsfromthecompressortotheheat sourcebyWay ofthefourthpiping. 2. The supercritical Brayton cycle poWer generation sys tem of claim 1, Wherein the mixture comprises CO2 and at least one other element or compound. 3. The supercritical Brayton cycle poWer generation sys tem of claim 2, Wherein the at least one other element or compound isanAlkane. 4. The supercritical Brayton cycle poWer generation sys temofclaim3,WhereintheAlkaneisoneofButane,Methane, Propane, or Hexane. 5. The supercritical Brayton cycle poWer generation sys tem of claim 2, Wherein the at least one other element or compoundisHelium,Neon,orNitrogen. 6. The supercritical Brayton cycle poWer generation sys tem of claim 2, Wherein a molar concentration of the at least one other element or compound in the mixture is less than 10 percent. 7. The supercritical Brayton cycle poWer generation sys temofclaim6,Whereinthemolarconcentrationoftheatleast one other element or compound in the mixture is less than 5 percent. 8. The supercritical Brayton cycle poWer generation sys tem of claim 1, further comprising: a sensor that senses the at least one environmental condi tion pertaining to the Brayton cycle poWer generation system;and an actuator that is caused to dynamically alter a composi tionofthemixturebasedatleastinpartupontheatleast one environmental condition. 9. The supercritical Brayton cycle poWer generation sys tem of claim 8, further comprising a composition modi?er module thatiscontrolledby theactuatortocausethecompo sitionofthemixturetobedynamicallyalteredbasedatleast in part upon the at least one environmental condition. 10.ThesupercriticalBraytoncyclepoWergenerationsys tem of claim 9, Wherein the composition modi?er module comprises a condenser that condenses an element or com pound in the mixture for extraction from the mixture. 11.ThesupercriticalBraytoncyclepoWergenerationsys tem of claim 8, Wherein the at least one environmental con ditionisambienttemperaturepertainingtothesupercritical BraytoncyclepoWergenerationsystem. 12.ThesupercriticalBraytoncyclepoWergenerationsys tem of claim 8, Wherein the at least one environmental con dition is barometric pressure in an environment of the super criticalBraytoncyclepoWergenerationsystem. 13.ThesupercriticalBraytoncyclepoWergenerationsys tem of claim 1, further comprising: a recompressor comprising an inlet port and an outlet port; ?fthpipingthatcouplestheinletportoftherecompressor With the second piping such that the ?uid travels from the?rstturbinetotherecompressorbyWay ofthesecond a compressor having an inlet port and an outlet port; piping and the ?fth piping; and

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