A molded plastic product (1200 kg/m3, c1500 J/kgK, k0.30
Chapter 5, Problem 5.117(choose chapter or problem)
A molded plastic product (??1200 kg/m3, c?1500 J/kg?K, k?0.30 W/m?K) is cooled by exposingone surface to an array of air jets, while the oppositesurface is well insulated. The product may be approxi-mated as a slab of thickness L?60 mm, which is ini-tially at a uniform temperature of Ti?80C. The airjets are at a temperature of T??20C and provide auniform convection coefficient of h?100 W/m2?K atthe cooled surface.Using a finite-difference solution with a space incre-ment of ?x?6 mm, determine temperatures at thecooled and insulated surfaces after 1 h of exposure tothe gas jets
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