m. Consider a reactor wall at a uniform temperature Tw = 300C which has a metal rod (diameter d = 5mm and length L = 2cm with k, = 25) welded to it at one location and surrounded by insulation (see figure). The metal rod then has a very long rod, acting as a fin, (ky = 190) with the same diameter attached to it with an adhesive which results in a thermal contact resistance of Rcont where Ront = 0.5 x 10-4 m? Assume that air flows over the very long rod results in a heat transfer coefficient of h = 30 with incoming air at T.. = 25C. Rcont A W W m.K insulator TW h, T. R'ont 1 700 ki a) Draw a thermal a thermal resistance network of this configuration b) Calculate the rate of heat transfer [W], q, from the reactor wall through this rod & fin assembly