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1. A 5mm thick stainless steel strip (k=21W/mK,=8000kg/m3, and cp=570J/kgK) is being heat treated as it moves through a furnace at a speed of 1cm/s. the air temperature in the furnace is maintained at 900C with a convection heat transfer coefficient of 80W/m2.K. If the furnace length is 3 m and the stainless steel strip enters it at 20C, determine the surface temperature gradient of the strip at mid length of the furnace. Hint: Use the lumped system analysis to calculate the plate surface temperature. Make sure to verify the application of this method to this problem. (6 Marks) 1. A 5mm thick stainless steel strip (k=21W/mK,=8000kg/m3, and cp=570J/kgK) is being heat treated as it moves through a furnace at a speed of 1cm/s. the air temperature in the furnace is maintained at 900C with a convection heat transfer coefficient of 80W/m2.K. If the furnace length is 3 m and the stainless steel strip enters it at 20C, determine the surface temperature gradient of the strip at mid length of the furnace. Hint: Use the lumped system analysis to calculate the plate surface temperature. Make sure to verify the application of this method to this problem. (6 Marks)