A metal surface with dimension (L x W) 4.6 m x 2.9 m at a temperature 278^o C has surrounding temperature 38^o C. Convective heat transfer coefficient (h) is 20 w/m²-k & emissivity of surface is (ε) 0.8. Take value of Boltzmann Constant as 5.67 x 10^-8 w/m²-k⁴
T1 = (278 + 273) K
T2 = (38 + 273) K. Calculate heat loss by the convection
Q_c = h A(T₁ - T₂)

A metal surface with dimension (L x W) 4.6 m x 2.9 m at a temperature 278^o C has surrounding temperature 38^o C. Convective heat transfer coefficient (h) is 20 w/m²-k & emissivity of surface is (ε) 0.8. Take value of Boltzmann Constant as 5.67 x 10^-8 w/m²-k⁴
T1 = (278 + 273) K
T2 = (38 + 273) K. Calculate heat loss by the radiation
Q_r = σ A ε(T₁⁴ - T₂⁴)