What is the maximum temperature gradient in the glass

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Reference no: EM13212649

In a tempering process, glass plate, which is initially at a uniform temperature Ti, is cooled by suddenly reducing the temperature of both surfaces to Ts. The plate is 20 mm thick, and the glass has a thermal diffusivity of 6 x 10-7 m2/s.

(a) How long wi1l it take for the mid plane temperature to achieve 50% of its maximum possible temperature reduction?

(b) If (Ti - Ts) = 300°e, what is the maximum temperature gradient in the glass at the above time?

Reference no: EM13212649

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