F11. Drying and Cooling Tower Formulas

Drying of Solids:

R = -dw/(Adt) = m(w - w_e) (11.1)

Where m is ratio of drying rate per unit area to moisture content

w = total moisture

w_c = critical moisture content

w_e = equilibrium moisture content

R_c = rate of drying per unit area for constant rate period = (w_o - w_c)/(t_cA)

A = area of heat transfer