The surface temperature of a metal ball after removing it from the furnace was measured to...

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The surface temperature of a metal ball after removing it from the furnace was measured to be 573 K. The diameter of the ball is 250 mm and it is made up of stainless steel ball (p 8055 kg/m, cp - 480 J/kg-K). The ball is then subjected to the flow of air at 1 atm pressure and 208 K with a velocity of 3 m/s. The surface temperature of the ball eventually drops to 473 K. a. Sketch the schematic of the system by labeling all the geometrical and technical data on it. (4) b. Determine the average convection heat transfer coefficient during this cooling process, and estimate how long the process will take. (10) k=0.02551 W/m-K 1.849 x 10 kg/m-s v=1.562 x 10-5 mis #src 2.76 x 10 kg/m-s Pr = 0.7296 Show every step of the mathematical calculations clearly to secure maximum marks Mention correct units in each mathematical step of the solution. The surface temperature of a metal ball after removing it from the furnace was measured to be 573 K. The diameter of the ball is 250 mm and it is made up of stainless steel ball (p 8055 kg/m, cp - 480 J/kg-K). The ball is then subjected to the flow of air at 1 atm pressure and 208 K with a velocity of 3 m/s. The surface temperature of the ball eventually drops to 473 K. a. Sketch the schematic of the system by labeling all the geometrical and technical data on it. (4) b. Determine the average convection heat transfer coefficient during this cooling process, and estimate how long the process will take. (10) k=0.02551 W/m-K 1.849 x 10 kg/m-s v=1.562 x 10-5 mis #src 2.76 x 10 kg/m-s Pr = 0.7296 Show every step of the mathematical calculations clearly to secure maximum marks Mention correct units in each mathematical step of the solution.