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Una chimenea de hormig n armado con di metro interior D 2 = 8 0 0 mm , di metro exterior D 3 = 1

Una chimenea de hormign armado con dimetro interior D2=800 mm, dimetro exterior D3=1300 mm, debe ser revestida por dentro con refractario. Determinar el espesor del revestimiento y la temperatura T3 de la superficie exterior de la chimenea, partiendo de la condicin de que las prdidas de calor de un metro de la chimenea (L=1m) no excedan de 2000 W/m, y de que la temperatura T2 de la superficie interior de la pared de hormign armado no supere 200\deg C. La temperatura de la superficie interior del revestimiento es de T1=425\deg C; el coeficiente de conductividad trmica de revestimiento es K1=0.5 W/m\deg C; el coeficiente de conductividad trmica del hormign es K2=1.1 W/m\deg C.
Pregunta 1: Determine el espesor

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