A theoretical and experimental study of simultaneous heat and mass transport resistances in a shallow fluidized bed dryer of mate leaves

2007 ◽  
Vol 46 (12) ◽  
pp. 1365-1375 ◽  
Author(s):  
Everton Fernando Zanoelo
Keyword(s):  
Experimental Study ◽  
Mass Transport ◽  
Fluidized Bed ◽  
Heat And Mass Transport ◽  
Fluidized Bed Dryer ◽  
Simultaneous Heat

scholarly journals An Experimental Study of the Drying Mechanism of Olive Cake

2007 ◽  
Vol 25 (4) ◽  
pp. 261-271
Author(s):  
Huseyin Gunerhan
Keyword(s):  
Experimental Study ◽  
Developing Countries ◽  
Fluidized Bed ◽  
Air Temperature ◽  
Low Cost ◽  
Air Velocity ◽  
Olive Cake ◽  
Renewable Source ◽  
Suitable Material ◽  
Fluidized Bed Dryer

In this study, an investigation on olive cake as on alternative fuel and effect of drying air temperature and drying air velocity is conducted. In many developing countries olive cake is considered as a biomass and can be used in very large amounts at very low cost. The effect of drying air temperature and air velocity at constant humidity conditions was studied. A process for drying of olive cake in a fluidized bed dryer is proposed. Results of these experiments of the olive cake indicated that olive cake has an excellent potential to be a renewable source of energy and suitable material for these types of dryers.

The Effects of Simultaneous Heat and Mass Transport on Radionuclide Migration

1985 ◽  
Vol 50 ◽  
Author(s):  
Frank B. Walton ◽  
J. P. M. Ross ◽  
D. G. Juhnke
Keyword(s):  
Ionic Strength ◽  
Mass Transport ◽  
Thermal Convection ◽  
Thermal Gradient ◽  
Convective Transport ◽  
Radionuclide Migration ◽  
Cold Side ◽  
Heat And Mass Transport ◽  
Flow Channels ◽  
Simultaneous Heat

AbstractFive thermal-convection loops, constructed of granite, were operated for 350 d with a hot-side temperature of 60°C and a cold-side temperature of 20°C, to examine the effects of a thermal gradient on the convective transport of seven radionuclides. Radionuclide concentrations on the surface of the loop flow channels indicated that 125Sb, 60Co and 54Mn and precipitated iron oxyhydroxides were concentrated in the hot side of the loops. Concentrations of 144Ce and 99Tc were higher in the cold side of the loops. Both of these patterns were exhibited by 75Se. The concentration of 137Cs was not significantly affected by the thermal gradient. Radionuclide solubility and sorption were affected by variations in pH, Eh and ionic strength. Incorporation of the radionuclide into mineral lattices was found to play a key role in retarding the transport of all radionuclides tested.

Sign in / Sign up

Export Citation Format

Share Document