Q. 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, s, 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)
Ans: 385.00 – 395.00