Question: A 10-in.-thick concrete bridge deck is embedded with heating cables, as shown in Figure P13-30. If the lower surface is at 0 oF, the rate

A 10-in.-thick concrete bridge deck is embedded with heating cables, as shown in Figure P13-30. If the lower surface is at 0 oF, the rate of heat generation (assumed to be the same in each cable) is 100 Btu / (h-in.) and the top surface of the concrete is at 35oF. The thermal conductivity of the concrete is 0.500 Btu/(h-ft-oF). What is the temperature in the slab? Use symmetry in your model.
Figure P13-30

35F 4 in. 10 in. I ft fi 0F

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