What temperature gradient must exist along an aluminium rod in order to transmit 33.5x10^3 W/m^-2 (Data: k for aluminium is 210 W m^-1 K^-1)?
- az_lenderLv 72 months ago
Q/t = kA(delta-T)/L.
In your problem, we want to find (delta-T)/L, so it's
(Q/t)/(kA), and you are given
(Q/t)/A = 33500 W/m^2 and k = 210 W/(mK).
(delta-T)/L = (33500/210) K/m = 159.5 K/m.
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