Question

Asked Oct 1, 2019

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Step 1

The following data have been given to us.

The length of the kiln, L = 40 m.

The breadth of the kiln, B = 5 m.

The height of the kiln, H = 4 m.

The thickness of the concrete wall, t = 20 cm.

The thermal conductivity of the ceiling, k_{c} = 0.9 W/mK.

The temperature of the kiln, T_{in} = 40 ^{0}C.

The thickness of the kiln sheet, t_{1} = 3 mm.

The thickness of the Styrofoam, t_{2} = 2 cm.

The thermal conductivity of the Styrofoam, k_{s} = 0.033 W/mK.

The thickness of the fin, t = 3 mm.

The temperature of ambient air, T_{out} = -4 ^{0}C.

The convective coefficient on the inner surface, h_{i} = 3000 W/m^{2}K.

The convective coefficient on the outer surface, h_{o} = 25 W/m^{2}K.

Step 2

The area of heat transfer corresponding to the inner and outer dimension is calculate as,

Step 3

The area of heat transfer through concrete w...

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