A radiant heating lamp has a surface temperature of 1000 K with ε = 0.8. How large a surface area is needed to provide 250 W of radiation heat transfer?
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The formula is: P/A = εσT^4 where: P is the power radiated, A is the surface area, ε is the emissivity of the material (dimensionless), σ is the Stefan-Boltzmann constant (approximately 5.67 x 10^-8 W/m^2K^4), and T is the absolute temperature in Kelvin. We are Show more…
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A radiant heating lamp has a surface temperature of $1000 \mathrm{K}$ with $\varepsilon=0.8 .$ How large a surface area is needed to provide $250 \mathrm{W}$ of radiation heat transfer?
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