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A 0.2 m thick infinite black plate having a thermal conductivity of 3.96 W/m-K is exposed to two infinite black surfaces at 300 K and 400 K as shown in the figure. At steady state the surface temperature of the plate facing the cold side is 350 K. The value of Stefan-Boltzmann constant a is 5.67 × 10–8 W/m² K4. Assuming 1- D heat conduction, the magnitude of heat flux through the plate (in W/m²) is ______(correct to two decimal places).
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= 391.612 m² w -
= 412 m² w -
= 391.612 w m² -
= 412 w m²
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Correct Option: C
Heat flux through the wall} = heat flux from wall to surface at 300 k
| = | |||
| + | - 1 | ||
| 1 | 1 | ||
| = 391.612 | (∵ 6 = 5.67 × 10-8 | ||
| m² | m²k4 |
