Reconsider Prob. 21€“80. Using an appropriate software, evaluate the effect of the distance L between the black coaxial parallel disks (D = 1 m) on the radiation heat transfer coefficient. By varying the distance L between the disks from 0.05 to 3 m, plot the radiation heat transfer coefficient h_radas a function of the distance L between the disks.

Reconsider Prob. 21€“80.

Consider two black coaxial parallel circular disks of equal diameter D that are spaced apart by a distance L. The top and bottom disks have uniform temperatures of 500°C and 520°C, respectively. Determine the radiation heat transfer coefficient h_rad between the disks if they are spaced apart by L = D.

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T2 = 500°C T = 520°C Ai!