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Engineering Energy Storage PDF

231 Pages·2017·10.433 MB·English
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ENGINEERING ENERGY STORAGE ODNE STOKKE BURHEIM ENGINEERING ENERGY STORAGE ENGINEERING ENERGY STORAGE ODNESTOKKEBURHEIM AcademicPressisanimprintofElsevier 125LondonWall,LondonEC2Y5AS,UnitedKingdom 525BStreet,Suite1800,SanDiego,CA92101-4495,UnitedStates 50HampshireStreet,5thFloor,Cambridge,MA02139,UnitedStates TheBoulevard,LangfordLane,Kidlington,OxfordOX51GB,UnitedKingdom Copyright©2017ElsevierInc.Allrightsreserved. Nopartofthispublicationmaybereproducedortransmittedinanyformorbyanymeans, electronicormechanical,includingphotocopying,recording,oranyinformationstorageand retrievalsystem,withoutpermissioninwritingfromthepublisher.Detailsonhowtoseek permission,furtherinformationaboutthePublisher’spermissionspoliciesandourarrangements withorganizationssuchastheCopyrightClearanceCenterandtheCopyrightLicensingAgency, canbefoundatourwebsite:www.elsevier.com/permissions. Thisbookandtheindividualcontributionscontainedinitareprotectedundercopyrightbythe Publisher(otherthanasmaybenotedherein). Notices Knowledgeandbestpracticeinthisfieldareconstantlychanging.Asnewresearchandexperience broadenourunderstanding,changesinresearchmethods,professionalpractices,ormedical treatmentmaybecomenecessary. Practitionersandresearchersmustalwaysrelyontheirownexperienceandknowledgeinevaluating andusinganyinformation,methods,compounds,orexperimentsdescribedherein.Inusingsuch informationormethodstheyshouldbemindfuloftheirownsafetyandthesafetyofothers, includingpartiesforwhomtheyhaveaprofessionalresponsibility. Tothefullestextentofthelaw,neitherthePublishernortheauthors,contributors,oreditors, assumeanyliabilityforanyinjuryand/ordamagetopersonsorpropertyasamatterofproducts liability,negligenceorotherwise,orfromanyuseoroperationofanymethods,products, instructions,orideascontainedinthematerialherein. LibraryofCongressCataloging-in-PublicationData AcatalogrecordforthisbookisavailablefromtheLibraryofCongress BritishLibraryCataloguing-in-PublicationData AcataloguerecordforthisbookisavailablefromtheBritishLibrary ISBN:978-0-12-814100-7 ForinformationonallAcademicPresspublications visitourwebsiteathttps://www.elsevier.com/books-and-journals Publisher:JoeHayton AcquisitionEditor:LisaReading EditorialProjectManager:CharlotteRowley ProductionProjectManager:PaulPrasadChandramohan Designer:MarkRogers TypesetbyVTeX CONTENTS Preface ix 1. EnergyStorage 1 1.1. ABriefHistoryofEnergy 1 1.2. RenewableEnergyandEnergyStorage 4 1.3. EnergyandPower 6 1.3.1. EnergyandPowerforTransportation 9 1.3.2. EfficiencyandPropagationofEfficiencyLosses 10 Problems 12 Solutions 12 2. GeneralThermodynamics 15 2.1. TheFirstLawandInternalEnergyU 15 2.2. SecondLawandEntropy 17 2.2.1. ReversibleAdiabaticMustBeIsentropic 18 2.2.2. TheCarnotEfficiencyLimitation 19 2.3. PressureandVolume 20 2.4. EnthalpyandControlVolumes 23 2.5. GibbsFreeEnergyandChemicalPotential 25 Problems 27 Solutions 27 3. MechanicalEnergyStorage 29 3.1. Introduction 29 3.2. MechanicalEnergyStorage 29 3.2.1. Flywheels 30 3.2.2. HydroelectricEnergyStorage 36 Problems 44 Solutions 45 4. ThermalEnergyStorage 47 4.1. Heatvs.ThermalEnergy 48 4.2. SensibleHeat 48 4.3. LatentHeat 49 4.4. ReactionHeat 52 4.5. EutecticandNoneutecticHeat 57 Problems 60 Solutions 60 v vi Contents 5. ThermomechanicalEnergyStorage 63 5.1. Thermodynamics:Heat,Work,andStates 63 5.2. CompressedAirEnergyStorage 63 5.2.1. CryogenicEnergyStorage 67 5.2.2. OtherCompressedGases 67 5.3. SolarPowerTowers 68 Problems 71 Solutions 72 6. ElectrochemicalEnergyStorage 75 6.1. Introduction 75 6.2. NernstEquationandtheElectromotoricForce,EMF 78 6.2.1. TheFreeEnergyofaReaction 78 6.2.2. TheElectrochemicalFreeEnergy 80 6.2.3. Half-CellReactions 81 6.2.4. Ohm’sLaw:PowerandPotential 82 6.3. ConcentrationandNernstEquation 86 6.3.1. ActivityofComponentsandSpecies 86 6.3.2. EMFandConcentration 88 6.3.3. ConcentrationPolarizationOverpotentials 90 6.3.4. LiquidJunctionPotential 93 6.4. ElectrodeReactionKinetics 99 6.4.1. TheEquilibriumReactionRateandConstant 99 6.4.2. Butler–VolmerOverpotentials 101 6.4.3. TheTafelOverpotential:AnApproximation 102 6.4.4. OverpotentialsforCompetingElectrodeReactions 104 Problems 107 Solutions 108 7. SecondaryBatteries 111 7.1. BatteryTerminology 111 7.2. Red-oxCellsandOxidationNumber 113 7.3. ChargingandDischargePowerandEfficiency 115 7.4. BatteryCapacity 116 7.5. BatteryFootprint 118 7.5.1. AccumulatedWeight 119 7.5.2. EnvironmentalFootprint 123 7.6. BatteryChemistry 124 7.6.1. LeadAcidBattery 124 7.6.2. NiCdBatteries 125 7.6.3. NiMeHBatteries 126 7.6.4. ZEBRABatteries 127 7.7. Li-ionBatteries 128 Contents vii 7.8. FlowCellBatteries 137 7.8.1. RedOxFlowBatteries 139 7.8.2. ConcentrationFlowBatteries 141 Problems 141 Solutions 142 8. HydrogenforEnergyStorage 147 8.1. HydrogenProduction.WaterElectrolysis 151 8.1.1. WaterElectrolysisThermodynamics 151 8.1.2. ElectrolysisTechnologies 154 8.1.3. HydrogenfromCoalandNaturalGas 165 8.2. HydrogenStorageandDistribution 165 8.2.1. ThermodynamicPropertiesofHydrogen 166 8.2.2. HydrogenStorageTechnologies 168 8.3. ReuseofHydrogen:FuelCells 175 8.3.1. FuelCellThermodynamics 176 8.3.2. Fuelcelltechnologies 177 Problems 189 Solutions 190 9. SupercapacitorsforEnergyStorageandConversion 193 9.1. ConventionalCapacitors 193 9.2. Supercapacitors 196 9.3. DeployingSupercapacitors 201 9.4. Pseudo-andHybridSupercapacitors 203 Problems 204 Solutions 204 A. SymbolsandConstants 207 RomanLetters 207 GreekLetters 208 Constants 208 B. AdiabaticCompressionofAir 209 C. Para-andOrtho-Hydrogen 213 Bibliography 215 Index 221 This page intentionally left blank PREFACE The front cover of this book illustrates the three branches of energy pro- duction,distribution,andconsumption.Theseareasareoverlappingbythe fieldofenergystorage.Bytheintroductionofrenewableenergytechnolo- gies these three areas will become closer and more interconnected. This is so because most renewables are electric, intermittent, and often out of phase with the demand in energy consumption. It is energy storage that can balance this. Thus energy storage is a growing field for engineering and research. Understanding the elements of engineering energy storage is needed now and ever more in the future. Energy is the backbone of our society. Today, we have a fossil-based economy. More than eighty percent of the energy consumption today is coal,oil,andgas.Thisiswhatdrivesoureconomy.Itisfundamentalinpro- viding our society with the services needed, whether it is transportation, food production, health care, entertainment, or any other. However, the threat from climate changes from the emissions from our economy back- bone, coal oil, and gas, means that we need to make changes. Fortunately, the usage of fossil energy is so inefficient that we only need to replace a third of this energy if a renewable energy technology is chosen. That is, it takes at least 3 MWh annually of mixed coal, oil, and gas to make a MWh of electricity each year, though a MWh of renewable energy annually is a MWh annually exactly—and once installed it is without marginal costs. Renewable, carbon neutral, and sustainable are keywords essential for the energy economy and energy technology of the future. Inevitably, the energy supply must come from renewable sources, and this change has started. Regardless of chosen technology, the technology itself must be carbon neutral. This means that if carbon is needed for the technology process or manufacturing, then it must be taken form the air, not the ground. For example,carbonisneededforproducingmetalslikesilicon,aluminum,and steel or for components in Li-ion batteries, fuel cells, or supercapacitors. Solutions of extraction this from plants and trees exists and relies more, in my opinion, on political will than technological barriers. Finally, the installed solutions must be sustainable, both with respect to the environment footprint and for the growth of the economy of our society.Currently,wecanfindexamplesallovertheworldwherethefearof ix

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