Given:
Heat transfer rate, $Q = 120$ W
Emissivity, $\epsilon = 0.85$
Surface area, $A = 0.55$ $m^2$
Maximum surface temperature, $T_s = 70$ °C
Stefan-Boltzmann constant, $\sigma = 5.67 \times 10^{-8}$ $W/m^2 \cdot K^4$
The heat transfer from the device to the
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