In a tempering process, glass plate, which is initially at a uniform temperature T i , is
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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?
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Related Book For
Fundamentals of Heat and Mass Transfer
ISBN: 978-0471457282
6th Edition
Authors: Incropera, Dewitt, Bergman, Lavine
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