Transport Phenomena in Micro Process Engineering (Google eBook)

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Springer Science & Business Media, Nov 12, 2007 - Science - 385 pages
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In this book, the fundamentals of chemical engineering are presented aiming to applications in micro system technology, microfluidics, and transport processes within microstructures. After a general overview on both disciplines and common areas, recent projects are shortly presented. The combination of different disciplines gives new opportunities in microfluidic devices and process intensification, respectively. Special features of the book are the state of the art in micro process engineering, a detailed treatment of transport phenomena for engineers, a design methodology from transport effects to economic considerations, a detailed treatment of chemical reaction in continuous flow microstructured reactors, an engineering methodology to treat complex processes. The book addresses researchers and graduate students in the field of chemical engineering, Microsystems engineering, and chemistry.
  

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Contents

Micro Process Engineering An Interdisciplinary Approach
1
12 Orientation of Micro Process Engineering
2
13 The Role of Transport Processes
3
14 Main Issues of Successful Microstructures
9
141 Wall heat conductivity
10
143 Corrosion fouling and catalyst deactivation
12
15 Scaling dimensions and issues
13
152 Processes
16
53 Convective Mass Transport
174
532 Mixing time scales and chemical reactions
175
54 Characteristics of Convective Micromixers
182
541 Mixing behavior in 90bends
183
542 Mixing behavior of Tshaped micromixers
185
543 Tshaped micromixers and combinations
190
544 Mixing times of convective micromixers
193
545 Energy dissipation into mixing
196

153 Devices
25
16 Actual Applications and Activities
30
162 Activities in the US
33
163 Activities in the Far East
34
17 Barriers and Challenges
38
Fundamentals Balances and Transport Processes
41
22 Unit Operations and Process Design
43
222 Method of process equipment and plant design
45
223 Design principles for process equipment
50
23 Balances and Transport Equations
52
232 The Boltzmann equation and balance equations
58
233 Macroscopic balance equations
61
234 Elementary transport processes and their description
65
235 Molecular velocities and macroscopic fluid properties
68
236 Limits of linear transport properties
71
24 Modeling Calculation Methods and Simulation
72
241 Physical variables and dimensional analysis
73
242 Similarity laws and scaling laws
74
243 Orderofmagnitude analysis
75
244 Lumped element modeling
76
245 Numerical simulation and analytical modeling
77
25 Future Directions of Micro Process Engineering Research
78
Momentum Transfer
81
312 The energy equation for fluid dynamics
83
313 Basic equations for long small channels
85
314 Compressible flow
89
315 Viscous heating and entropy generation in channel flow
92
316 Fluid dynamic entrance length
96
32 Convective Fluid Dynamics in Microchannels
97
321 Dean flow in 90 curves
98
322 Fluid forces in bends
100
323 Fluid dynamics in Tjunctions with symmetric inlet conditions
102
324 Flow regimes in Tshaped micromixers
107
33 Multiphase Flow
119
331 Gasliquid flow patterns
120
332 Twophase pressure loss
122
333 Contacting and phase separation
123
334 Immiscible liquids
125
Heat Transfer and Micro Heat Exchangers
129
412 Heat conduction in small systems
131
413 Convective heat transfer in microchannels
134
414 Rarefied gases with slip boundary conditions
136
415 Convective cooling for flow measurement
139
42 Microfluidic Networks for Heat Exchange
143
421 Statusquo of microfluidic networks for device cooling
144
422 Single channel element calculation
145
423 Combined channel elements
148
424 Heat exchanger channel network
150
43 Micro Heat Exchanger Devices
152
431 Numberofthermalunits NTU concept
154
432 Design issues for exchange equipment
156
433 Fouling and blocking of equipment
159
434 Particle deposition in microchannels
161
Diffusion Mixing and Mass Transfer Equipment
163
511 Mixing principles and description
164
512 Mixing characterization
166
513 Potential of diffusive mixing
168
514 Stoichiometric mixing and diffusion process
169
52 Diffusive Mass Transport and Concentration Distribution in Fluids
172
546 Mixing effectiveness
198
547 Summary of Convective Micromixers
202
55 Mixing and Chaotic Advection
203
552 Geometry and flow regimes
205
553 Fluid lamellae and chemical reactions
207
56 Design and Fabrication of Silicon Micromixers
209
561 Microstructured mixers for liquid phase precipitation
211
562 Microstructured mixers for aerosol generation
212
563 Microstructured mixers with two wafers
214
57 High Throughput Mixing Devices with Microchannels
215
571 Numerical simulation of mixing elements
218
572 Experimental results and discussion
220
573 Performance investigation
223
574 Injection micromixers
224
Chemical Reactions and Reactive Precipitation
225
611 Heat and mass transfer with chemical reactions
228
612 Characteristics of continuous flow reactors
229
613 Temperature control in microchannel reactors
233
62 Wall Mass Transfer and Surface Reactions in Microfluidic Systems
236
621 Continuum transport model
237
622 Physical meaning of dimensionless parameters
240
624 Wall mass transfer in microchannel reactors
242
625 Wall adsorption and saturation time scales
244
63 Design Criteria for Microchannel Reactors
248
632 Reaction kinetics and transport processes
251
633 Heterogeneous catalytic reactions in microchannel reactors
253
634 Scaleup and economic situation
255
635 Scaleup method with equalup principle
258
636 Iodideiodate reaction for selectivity engineering
261
637 Competitiveconsecutive reactions
264
64 Microreactors for Aerosol Generation
267
642 Asymmetrical mixing in microchannels
268
643 Experimental characterization of mixing regimes
272
65 Mixing and Defined Precipitation in Liquid Phase
275
651 Modeling and simulation of particle precipitation
277
652 The population balance equation
278
653 Precipitation in the interdiffusion zone
280
654 Binary compound precipitation in convective micromixers
282
655 Experimental investigations of barium sulfate precipitation
286
656 Experimental investigation of pigment synthesis
290
Coupled Transport Processes
293
71 Thermodynamics of Irreversible Processes
294
72 Thermoelectric Energy Conversion
297
721 Microscale thermoelectric energy conversion
299
722 Design and fabrication of the generator
301
723 Experimental characterization and discussion
306
724 Thermocouples and microfluidic chips
308
73 Electroosmotic and Electrokinetic Effects
311
74 Thermodiffusion
312
742 Experimental investigations with thermodiffusion chips
315
743 Improvement of thermodiffusion devices
317
744 Knudsen pump
318
75 Pressure Diffusion
319
Conclusion and Final Remarks
321
Color Figures
323
References
339
Index
360
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Page 355 - Formation of droplets and mixing in multiphase microfluidics at low values of the reynolds and the capillary numbers".
Page 355 - A new parallel competing reaction system for assessing micromixing efficiency - experimental approach, Chem.
Page 359 - ... Configuration Separation Channels," Anal. Chem. 72, pp. 3596-3604. Khaledi, MG (1998) "High-Performance Capillary Electrophoresis," in Chemical Analysis: A Series of Monographs on Analytical Chemistry and its Applications, JD Winefordner, ed., p. 146, John Wiley & Sons, Inc., New York. Kirby, BJ (2004) "Zeta Potential of Microfluidic Substrates: 1. Theory, Experimental Techniques, and Effects on Separations,

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