| OCR Text |
Show E* e (T) fc fg fp h hi ~ H k ~~ lp M m Nu Pr R r Re Sc Sh St T t x Yo w a. 8 ~ E: A v P P (J - 21- activation energy for pyrolysis DTG-curve c har/oxidizer mass ratio carbon monoxide/oxygen mass ratio pyrolysis products/oxygen mass ratio heat transfer coefficient, h o without Stefan flow heat of reaction, heat of vaporization heat of reaction boundary layer coefficient rate of chemical reactions pre-exponential constant for pyrolysis heat of pyrolysis reactions molar mass mass mass flow rate/area Nusselt number, hd/Ag Prandtl number particle radius, gas constant, 8.314 kJ/kmolK space coordinate Reynolds number, wd/v Schmidt number Sherwood number Stanton number for the efflux flow, h o/cgrn" temperature time coordinate inside the particle oxygen mass fraction relative velocity dimensionless velocity parameter ratio of diffusivities, PgDg/PaDa difference particle emissivity heat conductivity kinematic viscosity density generation of volatiles Stefan-Boltzmann's constant, 5.67W/m 2 (100K)4 Indexes o initial, reference b boundary layer c chemical d diffusion ei asymptotic yield of interval i i interval i, reaction i g gas p pyrolysis r radiation, wall ref reference s surface 00 far from particle |
