In the vulcanization of tires, the carcass is placed into a jig, and steam at 149?C is admitted suddenly to both sides. If the tire thickness is 2.5 cm, the initial temperature is 21?C, the heat transfer coefficient between the tire and the steam is 150 W/(m2 K), and the specific heat of the rubber is 1650 J/(kg K), estimate the time required for the center of the rubber to reach 132?C.GIVENTire suddenly exposed to steam on both sidesSteam temperature (T??) = 149?CTire thickness (2L) = 2.5 cm = 0.025 mInitial tire temperature (To) = 21?CThe heat transfer coefficient (hc) = 150 W/(m2 K)The specific heat of the rubber (c) = 165 J/(kg K)ASSUMPTIONSShape effects are negligible, tire can be treated as an infiniteplate

Transcribed Image Text:

- 2L =25 cm Steam T.= 149°C Steam T = 149°C Tire Rubber.