gas solid contact and interphase mass transfer

... Low- to mid -mass sensitivity 197 50% of Mass 442 Mid -mass resolution and sensitivity 199 5-9% of Mass 198 Mid -mass resolution and isotope ... Mid- to high -mass sensitivity 365 >1% of the base peak Baseline threshold 441 Present and < Mass 443 High -mass resolution 442 Base peak or >50% of Mass 198 High -mass resolution and sensitivity ... sensitivity 443 15-24% of Mass 442 High -mass resolution and isotope ratio All ions are used primarily to check the mass measuring accuracy of the mass spectrometer and data system, and this is the most...

Ngày tải lên: 22/03/2014, 14:20

... Mathematical Simulation of Mass and Heat Transfer in High Moisture Foods, Trans ASAE, pp 55-59 224 Husain A., Chen C.S., Clayton J T (1973), Simultaneuos Heat and Mass Diffusion in Biological ... (1980), Heat and mass transfer, Mir Publisher, Moscow Peebles E D, Christopher D McDaniel (2004), A Practical Manual for Understanding the Shell Structure of Broiler Hatching Eggs and Measurement ... drying systems: Simulations and optimization, Agrotech Publishing Academy, Udaipur, pp 131-133 Haghighi K., Segerlind L.J, (1988), Modeling Simultaneous Heat and Mass Transfer in Isotropic Sphere,...

Ngày tải lên: 28/08/2013, 08:31

... of thermal and mass diffusion Soundalgekar and Wavre [4] investigated the unsteady free convection flow past an infinite vertical plate with constant suction and mass transfer Hossain and Begum ... estimated the effect of mass transfer and free convection on the flow past a vertical plate Bestman [6] analyzed the natural convection boundary layer flow with suction and mass transfer in a porous ... Effect of mass transfer and free convection on the flow past a vertical plate ASME J Heat Trans 1984, 106, 664-668 [6] Bestman A.R Natural convection boundary layer with suction and mass transfer...

Ngày tải lên: 05/09/2013, 15:28

... a natural generalization of Theorem — the Mass Transference Principle Theorem (A general Mass Transference Principle ) Let (X, d) and g be as above and let {Bi }i∈N be a sequence of balls in ... theory is introduced and discussed The general conjecture is established modulo the original conjecture The key result is a Mass Transference Principle which allows us to transfer Lebesgue measure ... major open problem and has attracted much attention (see [5] and references within) For k ≥ 2, the conjecture was formally stated by Sprindˇuk [9] and z settled by Pollington and Vaughan [8] Theorem...

Ngày tải lên: 22/03/2014, 20:20

... Transpiration on Friction, Heat, and Mass Transfer 243 8.1 Couette Flow Film Model 8.2 Gas Liquid Interphase Problems 243 248 256 Analogy Among Momentum, Heat, and Mass Transfer 258 ... Thermal and Mass Diffusion Effects 10.15.1 Conservation Equations and Scaling Analysis 10.15.2 Heat and Mass Transfer Analogy 10.16 Solutions for Natural Convection Caused by Combined Thermal and Mass ... ) Blowing parameter Mass- flux-based heat transfer driving force Molar-flux-based heat transfer driving force Mass- flux-based mass transfer driving force Molar-flux-based mass transfer driving force...

Ngày tải lên: 30/03/2014, 19:20

... Heat and Mass Transfer Processes in a Porous Medium and a Hele-Shaw Cell A V Gorin 139 Heat and Mass Transfer in Porous Materials with Complex Geometry: Fundamentals and Applications ... Ignaszak and P Popielarski Metal Foams Design for Heat Exchangers: Structure and Effectives Transport Properties Jean-Michel Hugo and Frédéric Topin Heat and Mass Transfer ... Freitas 25 Two-Phase Flow and Heat Transfer in Micro-Channels and Their Applications in Micro-System Cooling Yuan Wang, Khellil Sefiane, Souad Harmand and Rachid Bennacer 47 Numerical...

Ngày tải lên: 31/03/2014, 16:20

... of heat and mass transfer, and enable him to solve practical problems On the other hand we placed special emphasis on a systematic development of the theory of heat and mass transfer and gave ... concepts and fundamental laws of heat and mass transfer The student obtains an overview of the different modes of heat and mass transfer, and learns at an early stage how to solve practical problems and ... mixing length mass modulus, M = a∆t/∆x2 (hemispherical total) emissive power spectral emissive power mass flow rate molecular mass, molar mass optical mass relative optical mass mass flux amount...

Ngày tải lên: 02/04/2014, 15:27

... 1980s and 1990s, it became fashionable to treat mass transfer as part of the dual theme of heat and mass transfer In these treatments, heat transfer, as the more mature discipline, predominated and ... Difference: The Film Concept and the Mass Transfer Coefficient 12 1.3 Units of the Potential and of the Mass Transfer Coefficient .16 Illustration 1.4: Conversion of Mass Transfer Coefficients ... Notions: Rates of Mass Transfer 17 TABLE 1.3 Rate Laws and Transfer Coefficients for Diffusion through a Stagnant Film Flux (mol/m2 s) Driving Potential Mass Transfer Coefficient Gases NA/A = kGDpA...

Ngày tải lên: 02/04/2014, 15:43

... molecular mass transfer and convective mass transfer, are analogous to conduction heat transfer and convective heat transfer Each of these modes of mass transfer will be described and analyzed ... 103 2.5 MASS- AND HEAT -TRANSFER ANALOGIES 110 2.6 CONVECTIVE MASS- TRANSFER CORRELATIONS 119 2.6.1 Mass- Transfer Coefficients for Flat Plates 2.6.2 Mass- Transfer Coefficients ... most mass- transfer operations Chapters to apply this common methodology to the analysis and design of some of the most popular types of mass- transfer operations Chapter covers gas adbsorption and...

Ngày tải lên: 02/04/2014, 15:44

... Mass Transfer Involving Flow Through Pipes 580 Mass Transfer in Wetted-Wall Columns 581 Mass Transfer in Packed and Fluidized Beds 584 Gas- Liquid Mass Transfer in Stirred Tanks 585 Capacity Coefficients ... Convective Mass Transfer 28.1 28.2 28.3 28.4 28.5 28.6 28.7 28.8 29 Equilibrium 551 Two-Resistance Theory Closure 563 569 Mass Transfer to Plates, Spheres, and Cylinders 569 Mass Transfer Involving ... Concentration Boundary Layer 531 Mass, Energy, and Momentum -Transfer Analogies 533 Models for Convective Mass- Transfer Coefficients 542 Closure 545 Convective Mass Transfer Between Phases 29.1 29.2...

Ngày tải lên: 02/04/2014, 15:51

... over the hand’s surface, (2) Convection coefficient is uniform over the hand, and (3) Negligible radiation exchange between hand and surroundings in the case of air flow ANALYSIS: The hand will ... PROBLEM 1.3 KNOWN: Dimensions, thermal conductivity and surface temperatures of a concrete slab Efficiency of gas furnace and cost of natural gas FIND: Daily cost of heat loss SCHEMATIC: ASSUMPTIONS: ... forced convection heat transfer with liquids and gases See Table 1.1 PROBLEM 1.16 KNOWN: Dimensions of a cartridge heater Heater power Convection coefficients in air and water at a prescribed...

Ngày tải lên: 02/04/2014, 15:52

... detail and is applied in almost all the solved problems Gas radiation and multi-body enclosures are also discussed Chapter 14 deals with basic ideas of mass transfer in both diffusion and convection ... energy transfer as heat due to temperature difference within a body or between bodies in thermal contact without the involvement of mass flow and mixing This is the mode of heat transfer through solid ... the contact resistance When the surfaces are brought together the contact is partial and air may be trapped between the other points as shown in Fig 1.4 Solid A Insulated Solid B Gap between solids...

Ngày tải lên: 08/04/2014, 10:55

... Rodrigo and José J Linares Chapter Numerical Analysis of Heat and Mass Transfer in a Fin -and- Tube Air Heat Exchanger under Full and Partial Dehumidification Conditions Riad Benelmir and Junhua ... least in the aspects of heat and/ or mass transfer, analytical/numerical solutions and optimization of the processes The first chapter deals with the description and mass transfer analysis of fixed-bed ... of gas diffusion layer on the heat transfer process in high temperature polymerization Chapter is concerned with the description and analysis of heat and mass transfer processes in a fin -and- tube...

Ngày tải lên: 19/06/2014, 10:20

... one parallel mini- 26 Heat and Mass Transfer – Modeling and Simulation circuit constant phase element and resistance, related to the charge transfer processes (kinetic), and another parallel mini-circuit ... 1.0 Mass constant Cathodetransfer CPE phase element 0.8 Anode charge Charge transfer transfer resistance resistance (Rct) Cathode Mass transfer polarization resistance (Rmt) ANODE CHARGE TRANSFER ... PEMFC Therefore, the MPL 30 Heat and Mass Transfer – Modeling and Simulation does not only have influence in terms of mass transfer limitations, but in kinetic and ohmic ones due to an excess...

Ngày tải lên: 19/06/2014, 10:20

... simultaneous heat and mass transfer on the cooling surface Many experimental, and few numerical, studies have been carried out to study the heat and mass transfer characteristics of the fin -and- tube heat ... and the fin This work will consider the heat and mass transfer for a representative tube and fin elementary unit 44 Heat and Mass Transfer – Modeling and Simulation 2l 2l Pl 2h 2h Pt air Pl Pt ... 2h Condensate mass flux Condensate-film Fig Heat and mass transfer phenomenon around a fin-tube As the fins spacing is very weak regarding the fins height and length, heat and mass transfer along...

Ngày tải lên: 19/06/2014, 10:20

... going up the inlet and outlet or the upper and lower fin edges, and is also minimal near the tube surface 2.4.2 Solving heat and mass transfer equations The heat and mass transfer problem has ... algorithm for heat and mass transfer models is developed and presented in Fig Numerical Analysis of Heat and Mass Transfer in a Fin -and- Tube Air Heat Exchanger under Full and Partial Dehumidification ... the heat and mass transfer characteristics will be presented and discussed 62 Heat and Mass Transfer – Modeling and Simulation 3.3 Effect of the inlet relative humidity Both ideal and real fins...

Ngày tải lên: 19/06/2014, 10:20

... as a driving gas and carrying gas with an inlet pressure of 1.4 and 1.6 MPa for the heating gas and powder carrying gas separately Heating gas temperature range is 573 K to 773 K Stand-off distance ... that heat and mass transfer is fast on the CuO/ZnO/Al2O3 catalytic coating than the conventional fixed bed catalyst, especially in micro-reactors 78 Heat and Mass Transfer – Modeling and Simulation ... University for methanol and methane steam reforming The system includes gas pressure regulators, gas preheater, gas flow meters and spraying gun as shown in Fig.7 The gun consists of a gas Fig Schematic...

Ngày tải lên: 19/06/2014, 10:20

... natural and forced convective heat and mass transfer regimes for nanofluids flowing in semi-infinite geometries, i.e external boundary layer flows along 96 Heat and Mass Transfer Modeling and Simulation ... 108 Heat and Mass Transfer Modeling and Simulation Fig 12 Velocity boundary layer for CuO / water nanofluid Fig 13 Velocity boundary layer for Alumina / water nanofluid Heat and Mass Transfer ... (2003) Water Gas Shift Reaction Kinetics and Reactor Modeling for Fuel Cell Grade Hydrogen Journal of Power Sources, Vol 124, No 2, (November 2003), pp (432-439), 0378-7753 94 Heat and Mass Transfer...

Ngày tải lên: 19/06/2014, 10:20