Heat and Mass Transfer Modeling and Simulation Part 11 doc

... reported heating value of about 47 MJ/kg and diesel has heating value of about 45 MJ/kg. Biomass on the other hand may have heating values ranging from 15 – 25 MJ/kg. 2.1 Heating value and ultimate ... analysis of biomass Heating value of biomass is usually measured using a bomb calorimeter. Table 1 shows the ultimate analyses and heating value of some fossil fuels and common bio...

Ngày tải lên: 19/06/2014, 08:20

... Mathematical Simulation of Mass and Heat Transfer in High Moisture Foods, Trans. ASAE, pp. 55-59. 224 MÔ HìNH HOá QUá TRìNH TRAO ĐổI NHIệT ẩM TRONG MáY ấP TRứNG GIA CầM Modeling of heat and mass transfer ... Solar drying systems: Simulations and optimization, Agrotech Publishing Academy, Udaipur, pp. 131-133. Haghighi K., Segerlind L.J, (1988), Modeling Simultaneou...

Ngày tải lên: 28/08/2013, 08:31

... of thermal and mass transfer boundary conditions can be encoun- tered in practice. Standard thermal and mass transfer boundary condition types are often used in theoretical models and experiments, ... (m) l ent,ma Mass transfer entrance length (m) l ent,th Thermal (heat transfer) entrance length (m) l M Turbulence mixing length ( m) l M, ma Turbulence mixing length f or m...

Ngày tải lên: 30/03/2014, 19:20

... components Heat output Fig. 9 Micro heat pipe [54] Two-Phase Flow and Heat Transfer in Micro-Channels 57 17. In, S., Jeong, S.: Flow boiling heat transfer characteristics of R123 and R134a in ... pressure drop and flow visualization of FC-72 in a silicon microchannel heat sink. Int. J. Heat Fluid Flow 30(6), 117 1 118 2 (2009) 21. Huh, C., Kim, M.H.: Pressure drop, boil...

Ngày tải lên: 31/03/2014, 16:20

... corresponds to that of heat conduction, whilst mass transfer in a flowing fluid, known for short as convective mass transfer corresponds to convective mass transfer. Mass transfer by diffusion and convection ... only sorts of mass transfer. Radiative heat transfer has no corresponding mass transfer process. 1.4.1 Diffusion The calculation of mass transfer by diffu...

Ngày tải lên: 02/04/2014, 15:27

... Convection Heat and Mass Transfer 457 7.5 The Sphere 465 7.6 Flow Across Banks of Tubes 468 7.7 Impinging Jets 477 7.7.1 Hydrodynamic and Geometric Considerations 477 7.7.2 Convection Heat and Mass Transfer ... in heat transfe , we have several recommendations. Chapter 1 Introduction sets the stage for any course in heat transfer. It explains the linkage between heat...

Ngày tải lên: 02/04/2014, 15:51

... The symbols dQ and dW represent differential heat transfer and work done, respectively. The differential operator, d, is used as both heat transfer and work are path functions and the evaluation ... 380 23.10 Radiant Heat Transfer Between Gray Surfaces 381 23 .11 Radiation from Gases 388 23.12 The Radiation Heat- Transfer Coefficient 392 23.13 Closure 393 24. Fundamenta...

Ngày tải lên: 02/04/2014, 15:51

... Electrical heater is perfectly insulated from dryer wall, (3) Heater and switch are isothermal at T set , (4) Negligible heat transfer from sides of heater or switch, (5) Switch surface, A s , loses heat ... Inner and outer surface temperatures. FIND: Heat flux through container wall and total heat load. SCHEMATIC: ASSUMPTIONS: (1) Steady-state conditions, (2) Ne...

Ngày tải lên: 02/04/2014, 15:52

... THE MASS BALANCES 2.1 The Macroscopic Mass Balances Figure 2.1 - 1 System for mass balances 2.1.1 The macroscopic total mass balance Accumulation of mass Input and output of mass ... theory and penetration-renewal theory 8.4 The Mass Transfer Coefficient for a Single Phase Example 8.4-1 Calculation offluxfrom a mass transfer coefficient Exutizple 8.4-2...

Ngày tải lên: 02/04/2014, 15:53

... COMBINED MODES OF HEAT TRANSFER Previous sections treated each mode of heat transfer separately. But in practice all the three modes of heat transfer can occur simultaneously. Additionally heat generation ... Combined modes of heat transfer. The heat flow is given by equation 1.6. Q A TT hh L kh h rr = − + ++ + ∞∞ 12 11 12 12 (1.6) where h r 1 and h r 2 are radiat...

Ngày tải lên: 08/04/2014, 10:55