(Solved): Consider spheres (p=3000kg/m3,cp=850J/kgK,k=20W/mK) of 40mm diameter that are hea ...
Consider spheres (p=3000kg/m3,cp=850J/kg⋅K,k=20W/m⋅K) of 40−mm diameter that are heated to a uniform temperature of 400∘C, then suddenly removed from an oven and placed in a forced-air bath operating at 25∘C with a corvection coefficient of 200 W/m2.K. Find the time, in seconds, the spheres must remain in the bath for 85% of the thermal energy to be removed as well as the centerline temperature, in ∘C, at that time. t=T(0,t)=∘C