2D Modeling of thermokinetics coupled with heat and mass transfer in the reduction zone of a fixed bed downdraft biomass gasifier

MÔ HìNH HOá QUá TRìNH TRAO ĐổI NHIệT ẩM TRONG MáY ấP TRứNG GIA CầM Modeling of heat and mass transfer in chicken egg incubators

... 3.4 Mô hình toán học trình trao đổi nhiệt ẩm vùng chứa trứng Từ mô hình động học (6) phơng trình nhiệt độ độ ẩm dòng khí trứng (35), (36) (38) ta xác định đợc hệ phơng trình mô tả trạng thái nhiệt ... lợng trứng: 224 (1 ) drT h fT t = hcTa Av (Ta TT ) + (1 ) drT hP + (1 ) drT hD (TT ) X t (34) 3.3 Đơn giản hoá mô hình nhiệt ẩm vùng chứa trứng Mô hình trao đổi nhiệt ẩm vùng chứa trứng ... (1988), Modeling Simultaneous Heat and Mass Transfer in Isotropic Sphere, Trans ASEA, pp 31 Husain A., Chen C.S., Clayton J T, Whitney L.F (1972), Mathematical Simulation of Mass and Heat Transfer in...

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A numerical study of heat and mass transfer in porous fluid coupled domains

... Ochoa-Tapia and Whitaker’s stress jump conditions for the flow, heat and mass transfer in porous/ fluid coupled domains, and to investigate their effects on local and global heat and mass transfer; ... incorporated with heat or mass transfer There are also limited numerical experiments and systematic results for heat and mass transfer in porous/ fluid coupled domains for certain numerical applications ... Interface Conditions For heat transfer interface conditions, usually continuities of temperature and heat flux are required (Neale and Nader, 1974; Vafai and Thiyagaraja, 1987; OchoaTapia and Whitaker,...

Heat and Mass Transfer Modeling and Simulation Part 1 pptx

... presented in Fig 11 Figures 11 a and 11 b present the calculations and the experimental data from Silva (2000), respectively Fig 11 Adsorption and desorption steps from simulation results (a) and experiments ... Fuel Cells 17 Justo Lobato, Pablo Cañizares, Manuel A 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 ... Heat and Mass Transfer – Modeling and Simulation Edited by Md Monwar Hossain Published by InTech Janeza Trdine 9, 510 00 Rijeka, Croatia Copyright © 2 011 InTech All chapters...

Heat and Mass Transfer Modeling and Simulation Part 2 ppt

... 20 40 jOL,oxygen / mA cm -2 1,418.9 1 ,27 2.1 1, 029 .8 jOL,air / mA cm -2 9 52. 8 786.6 5 62. 2 Rmt / ohm cm2 0.744 1.041 1.5 02 Table Limiting current densities for oxygen and air operation, and the mass ... shows the gases (H2, O2, air and water vapour) permeability of the different carbon support For its calculation, Equation must be used 24 Heat and Mass Transfer – Modeling and Simulation hydrogen ... resistance, 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...

Heat and Mass Transfer Modeling and Simulation Part 3 pot

... / % 73. 9 72.2 72.2 69.2 67 Mean pore diameter / m 36 .69 34 .32 33 . 23 32.10 30 .50 33 Tortuosity 3. 3 63 3.502 3. 717 4.152 4.620 Table Values of the overall porosity, mean pore size diameter and tortuosity ... Applied Electrochemistry, Vol 32 , No 4, pp 38 3 -38 8, ISSN : 0021-891X 38 Heat and Mass Transfer – Modeling and Simulation Appleby, A.J & Foulkes F.R (19 93) Fuel cell handbook, Krieger Publishing ... 2007), pp 436 5- 438 0, ISSN: 036 0 -31 99 3 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...

Heat and Mass Transfer Modeling and Simulation Part 4 docx

... flow rate (3), heat flow rate (5),fin efficiency (67) Fig The global calculation algorithm for heat and mass transfer models 54 Heat and Mass Transfer – Modeling and Simulation 2.5 Heat performance ... 245 -286 Kazeminejad, H (1995) Analysis of one-dimensional fin assembly heat transfer with dehumidification, Int J of Heat mass transfer, 38-3, 45 5 -46 2 66 Heat and Mass Transfer – Modeling and ... on 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...

Heat and Mass Transfer Modeling and Simulation Part 5 pdf

... 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 ... temperature of 453 K, rate of △X changed from fast to slow with inlet velocity; at 453 K, rate of △X represented a linearly variation; however, at 82 Heat and Mass Transfer – Modeling and Simulation ... 0.49:0 .5: 0.01 and 0 .5: 0. 45: 0. 05; as for the inlet velocity Vin effects study, 0.4 m·s-1, 0.7 m·s-1, 1.0 m·s-1, 1.3m·s-1 were considered WGS PrOX k/ mol·m-2 ·s-1 2.46×106 2 .52 ×1 05 453 K） 3.86×1 05 473K）...

Heat and Mass Transfer Modeling and Simulation Part 6 pptx

... 0 .64 3 -0.11% 7.222 0 .65 0 0.00% 6. 860 0 .65 4 0.34% 7.5 86 0 .64 7 0.44% 7.058 0 .65 2 0.70% 8.058 0 .64 3 0.51% 8 .66 2 0 .63 8 0.83% 8 .62 3 0 .63 8 0.55% 11.709 0 .62 1 0.10% 9. 267 0 .63 4 0.59% Table Nanofluids properties ... 104 Heat and Mass Transfer Modeling and Simulation CuO/ water nanofluid Alumina / water nanofluid Volume fraction (%) Pr Pr 6. 984 0 .65 3 0.00% 6. 984 0 .65 3 0.00% 8.0 06 0 .64 3 -0.11% 7.222 0 .65 0 ... 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...

Heat and Mass Transfer Modeling and Simulation Part 7 doc

... 3. 179 688 1.083916 -1.965418 0.639088 0.684936 0.64 276 7 bki i=2 (trickle fill) 7. 0 473 19 0.812454 -1.143846 2. 677 231 0.2948 27 1.018498 i=3 (film fill) 3.8 978 30 0 .77 7 271 -2.11 472 7 15.3 274 72 0.215 975 ... nanofluids Int J Heat Mass Transfer, Vol.43 pp. 370 1- 370 7 116 Heat and Mass Transfer – Modeling and Simulation Wang, X.-Q &, Mujumdar, A.S (20 07) Heat transfer characteristics of nanofluids : a review ... nanofluids Heat Mass Transfer, Vol.39 pp 77 5 -78 4 Varga, C., Fohanno, S & Polidori G (2004) Turbulent boundary-layer buoyant flow modeling over a wide Prandtl number range Acta Mechanica Vol. 172 pp.65 -73 ...

Heat and Mass Transfer Modeling and Simulation Part 8 pot

... 30. 283 0 Range (ºC) 30.00 18. 886 6 30.00 9.5566 30.00 25.4517 Approach (ºC) 8 8 13 13 Afr (m2) 8. 869 10.1735 8. 894 20.5291 8. 862 7. 484 7 Lfi (m) 2.294 1.2730 2.239 0. 989 3 1 .85 8 1.0631 P (hP) 24.637 ... 0. 682 4 0 .82 0 0 .83 58 0.911 0. 689 7 mw,r (kg/s) 1.541 1.1234 1.456 1.0492 1.564 1.12 68 mw,e (kg/s) 1.156 0 .84 25 1.092 0. 786 9 1.173 0 .84 51 Ta,out (kg/s) 37.077 28. 387 6 36 .87 1 23.3112 36.9 98 30. 283 0 ... 26616.0 235 58. 2 Total annual cost (US$/year) 66065.1 62652.1 64604.6 72171.7 587 16 .8 504 48. 6 Table Results for Examples 1, and 786 1.0 9425.1 134 Heat and Mass Transfer – Modeling and Simulation...

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