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A pair of parallel glass panes, each of 3 mm thickness traps 2 mm layer of stagnant air. Thermal conductivities of glass and air are 0.5 and 0.02 W m-1 K-1, respectively. If the film heat transfer coefficient of air is 10 W m-2 K-2, then Biot Number is
🗓 Dec 8, 2021
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