Direct Energy, 2018a

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1 INTRODUCTION 3 [2, ch. 1]. However, plenty of good resources discussing these topics exist. Furthermore, thisbook emphasizesdevice that operate near room temperature and at relatively low power (
4 1.2 Preview of Topics Math through Calculus I is used in the rst part of the book, and math through Calculus III (including partial derivatives) is used in the second part. Many topics in this text are discussed qualitatively. No attempt is made to be mathematically rigorous, and proofs are not given. The physics of devices is emphasized over excessive mathematics. Additionally, all physical systems will be discussed semiclassically, which means that explanations will involve electrons and electromagnetic elds, but the waveparticle duality of these quantities will not be discussed. While quantum mechanical, quantum eld theoretical, and other more precise theories exist to describe many physical situations, semiclassical discussions will be used to make this book more easily accessible to readers without a background in quantummechanics. Chapters 2-10comprisetherst part of this book. As mentioned above, they survey various direct energy conversion processes which convert to or fromelectricity and which do not involve magnets and coils. Table 1.1 lists many of the processes studied along with where in the text they are discussed, and Table 1.2 lists some of the devices detailed. This text is not intended to be encyclopedic or complete. Instead, it is intended to highlight the physics behind some of the most widely available and accessible energy conversion devices which convert to or fromelectrical energy. One way to understand energy conversion devices used to convert to or from electricity is to classify them as most similar to capacitors, inductors, resistors, or diodes. While not all devices t neatly in these categories, many do. The second column of Table 1.2 lists the category for various devices. Similarly, energy conversion processes may be capacitive, inductive, resistive, or diode-like. Capacitive energy conversion processes are discussed in Chapters 2 and 3. Capacitors, piezoelectric devices, pyroelectric devices, and electro-optic devices are discussed. A piezoelectric device is a device which converts mechanical energy directly to electricity or converts electricity directly to mechanical energy [6] [3]. A material polarization and voltage develop when the piezoelectric device is compressed. A pyroelectric device converts a temperature dierential into electricity [6]. The change in temperature induces a material polarization and a voltage in the material. Electro-optic devices convert an optical electromagnetic eld to energy of a material polarization. In these devices, an external optical eld typically froma laser induces a material polarization and a voltage across the material. Chapters 4 and 5 discuss inductive energy conversion devices including antennas, Hall eect devices, and magnetohydrodynamic devices. An antenna converts electrical energy to an electromagnetic eld or vice versa. A Hall eect device converts a magnetic eld to or from electricity. A magnetohy-
Page 2 and 3: Direct Energy Conversion by Andrea
Page 4 and 5: CONTENTS i Contents Contents i 1 In
Page 6 and 7: CONTENTS iii 6.3.2 Energy Levels in
Page 8 and 9: CONTENTS v 9.6 Fuel Cells . . . . .
Page 10: Acknowledgements I would like to th
Page 13: 2 1.2 Preview of Topics to connect
Page 17 and 18: 6 1.2 Preview of Topics Process Spo
Page 19 and 20: 8 1.2 Preview of Topics drodynamic
Page 21 and 22: 10 1.4 Measures of Power and Energy
Page 23 and 24: 12 1.5 Properties of Materials 1.5
Page 25 and 26: 14 1.5 Properties of Materials most
Page 27 and 28: 16 1.6 Electromagnetic Waves −→
Page 29 and 30: 18 1.6 Electromagnetic Waves Relate
Page 31 and 32: 20 1.6 Electromagnetic Waves A unif
Page 33 and 34: 22 1.7 Problems
Page 35 and 36: 24 2.2 Capacitors 2.2 Capacitors 2.
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54 3.2 Pyroelectricity Material Che
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56 3.3 Electro-Optics KH 2 PO 4 [25
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58 3.3 Electro-Optics The rst two t
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60 3.3 Electro-Optics used as an el
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62 3.4 Notation Quagmire Notation i
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64 3.5 Problems 3.5 Problems 3.1. F
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66 3.5 Problems −→ DinC/m 2 unp
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68 4.1 Introduction Center-fed half
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70 4.2 Electromagnetic Radiation In
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72 4.2 Electromagnetic Radiation ar
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74 4.3 Antenna Components and Denit
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76 4.4 Antenna Characteristics ante
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78 4.4 Antenna Characteristics Impe
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80 4.4 Antenna Characteristics Azim
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82 4.4 Antenna Characteristics 4.4.
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84 4.4 Antenna Characteristics 5 Li
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86 4.5 Problems Figure 4.6: A snow
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88 4.5 Problems 4.5. Match the foll
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90 4.5 Problems 4.8. Radiation patt
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92 5.2 Physics of the Hall Eect The
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94 5.2 Physics of the Hall Eect The
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96 5.3 Magnetohydrodynamics This am
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98 5.5 Applications of Hall Eect De
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100 5.6 Problems 5.6 Problems 5.1.
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102 6.2 The Wave and Particle Natur
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104 6.3 Semiconductors and Energy L
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120 6.4 Crystallography Revisited L
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122 6.5 Pn Junctions E Indirect Sem
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124 6.5 Pn Junctions an excess of n
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126 6.5 Pn Junctions V x - + Energy
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128 6.6 Solar Cells to day and loca
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130 6.6 Solar Cells dot based mater
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132 6.7 Photodetectors Solar Panel
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134 6.7 Photodetectors 6.7.2 Measur
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6 PHOTOVOLTAICS 137 6.3. The gure i
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7 LAMPS, LEDS, AND LASERS 139 7 Lam
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7 LAMPS, LEDS, AND LASERS 141 Photo
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7 LAMPS, LEDS, AND LASERS 143 Absor
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7 LAMPS, LEDS, AND LASERS 145 We ca
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7 LAMPS, LEDS, AND LASERS 147 If we
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7 LAMPS, LEDS, AND LASERS 149 tube
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7 LAMPS, LEDS, AND LASERS 151 easil
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7 LAMPS, LEDS, AND LASERS 153 Power
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7 LAMPS, LEDS, AND LASERS 155 Two L
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7 LAMPS, LEDS, AND LASERS 157 but n
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7 LAMPS, LEDS, AND LASERS 159 of ec
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7 LAMPS, LEDS, AND LASERS 161 the o
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7 LAMPS, LEDS, AND LASERS 163 Ti:Sa
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7 LAMPS, LEDS, AND LASERS 165 the b
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7 LAMPS, LEDS, AND LASERS 167 Gas D
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7 LAMPS, LEDS, AND LASERS 169 categ
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7 LAMPS, LEDS, AND LASERS 171 7.8.
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8 THERMOELECTRICS 173 8 Thermoelect
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8 THERMOELECTRICS 175 Symbol Name V
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8 THERMOELECTRICS 177 per unit volu
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8 THERMOELECTRICS 179 kPa, and the
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8 THERMOELECTRICS 181 Seebeck Effec
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8 THERMOELECTRICS 183 gradient acro
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8 THERMOELECTRICS 185 thermocouples
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8 THERMOELECTRICS 187 The gure of m
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8 THERMOELECTRICS 189 or mass invol
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8 THERMOELECTRICS 191 temperatures?
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8 THERMOELECTRICS 193 Figure 8.4: L
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8 THERMOELECTRICS 195 8.9 Problems
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8 THERMOELECTRICS 197 8.8. A thermo
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8 THERMOELECTRICS 199 Figure 8.5 8.
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202 9.2 Measures of the Ability of
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212 9.3 Charge Flow in Batteries an
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214 9.3 Charge Flow in Batteries an
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216 9.4 Measures of Batteries and F
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224 9.5 Battery Types specic energi
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226 9.5 Battery Types at the anode
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228 9.5 Battery Types Figure 9.8: T
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230 9.6 Fuel Cells Fuel cell compon
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232 9.6 Fuel Cells 9.6.3 Practical
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234 9.7 Problems 9.7 Problems 9.1.
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236 9.7 Problems A E - + I B D H 2
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238 10.3 Radiation Detectors high e
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240 10.5 Resistive Sensors capacito
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242 10.6 Electrouidics However, ene
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244 10.6 Electrouidics
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246 11.2 Lagrangian and Hamiltonian
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248 11.3 Principle of Least Action
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250 11.4 Derivation of the Euler-La
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252 11.5 Mass Spring Example not in
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254 11.5 Mass Spring Example Path 1
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256 11.5 Mass Spring Example We can
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258 11.6 Capacitor Inductor Example
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260 11.6 Capacitor Inductor Example
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262 11.7 Schrödinger's Equation 11
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264 11.8 Problems 11.4. Figure 11.2
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266 11.8 Problems a famous result k
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268 11.8 Problems (c) Find the gene
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270 12.2 Electrical Energy Conversi
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276 12.3 Mechanical Energy Conversi
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282 12.4 Thermodynamic Energy Conve
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284 12.4 Thermodynamic Energy Conve
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286 12.5 Chemical Energy Conversion
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288 12.6 Problems 12.6 Problems 12.
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290 12.6 Problems 12.6. Match the d
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292 13.1 Introduction • Describe
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294 13.2 Preliminary Ideas Assuming
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296 13.3 Derivation of the Lagrangi
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306 13.4 Deriving the Thomas Fermi
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308 13.5 From Thomas Fermi Theory t
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310 13.6 Problems (a) Write the Ham
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312 14.1 Introduction damental equa
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314 14.2 Types of Symmetries be wri
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316 14.3 Continuous Symmetries and
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322 14.4 Derivation of the Innitesi
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330 14.5 Invariants and we end up w
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332 14.5 Invariants in the limit ε
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334 14.5 Invariants Next use Eq. 14
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336 14.6 Summary 14.6 Summary In th
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338 14.7 Problems 14.6. The equatio
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340 14.7 Problems
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342 Appendices Symbol Quantity Unit
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350 Appendices Prex name Symbol Val
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352 Appendices for voltage. (As an
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354 Appendices Material or Device S
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356 REFERENCES [15] E. C. Jordan an
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358 REFERENCES [45] V. K. Tikhomiro
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360 REFERENCES [73] M. G. Thomas, H
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362 REFERENCES [100] A. Ishibashi,
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364 REFERENCES [125] D. Wright, Req
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366 REFERENCES [150] J. P. Owejan,
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368 REFERENCES [175] G. K. Woodgate
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Index Absorption, 139 Action, 247 A
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372 INDEX Nernst equation, 220 Neur
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About the Book Direct Energy Conver
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Direct Energy, 2018a

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