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Engineering, 06.10.2019 04:00 LuluMathLover101

Aplane layer of coal of thickness l = 1 m experiences uniform volumetric generation at a rate of q = 10w/m3 due to slow oxidation of the coal particles. averaged over a daily period, the top surface of the layer transfers heat by convection to ambient air for which h = 8 w/m2 ⋅ k and t[infinity] = 30°c, while receiving solar irradiation in the amount gs = 500 w/m2. irradiation from the atmosphere may be neglected. the solar absorptivity and emissivity of the surface are each α s = ε = 0.95.

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