A rod of 10 mm square section and 160 mm length with thermal conductivity of 50W

Question

A rod of 10 mm square section and 160 mm length with thermal conductivity of 50W/m K protrudes from a furnace wall at 200 degree Celsius with convective coefficient 20 W/ square m K. Make calculations for the heat convective up to 80 mm length

Options:

A . 6.84W

B . 7.34W

C . 4.54W

D . 5.47W

Answer: Option A
Answer: (a).6.84W

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