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(b) A cylindrical pyrolysis furnace used in palm kernel shell carbonization process having radius and height equal to 1 m respectively (Figure 1). The top (surface 1) and the base (surface 2) of the furnace has emissivities 0.8 and 0.4, respectively, and are maintained at constant temperatures Ti= 427 C and Ty= 227 C. The side surface closely approximates a blackbody and is maintained at a temperature of Tz= 127 C. Determine the net rate of radiation heat transfer at each surface during steady operation (15 Marks) T, = 427C &j=0.8 H Black Tz = 127C T = 227 C &q=0.4 Figure 1 Pyrolysis furnace