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An aluminium panel, thickness 1.8 mm and initial temperature 293 K, is to be heat treated by submersion in a fluid at 575 K. The heat transfer coefficient between the panel and the fluid is 10 W/m2K. The properties of the panel are assumed to be constant during the heat treatment: thermal conductivity = 247 W/mK, density = 2770 kg/m³, and specific heat capacity = 875 J/kgk. We want to investigate the temperature change over time, and need to calculate the Biot number to decide whether to use a lumped capacitance method or a finite difference method. What is the Biot number for this case? Give your answer to 2 significant figures.

An aluminium panel, thickness 1.8 mm and initial temperature 293 K, is to be heat treated by submersion in a fluid at 575 K. The heat transfer coefficient between the panel and the fluid is 10 W/m2K. The properties of the panel are assumed to be constant during the heat treatment: thermal conductivity = 247 W/mK, density = 2770 kg/m³, and specific heat capacity = 875 J/kgk. We want to investigate the temperature change over time, and need to calculate the Biot number to decide whether to use a lumped capacitance method or a finite difference method. What is the Biot number for this case? Give your answer to 2 significant figures.

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An aluminium panel, thickness 1.8 mm and initial temperature 293 K, is to be heat treated by submersion in a fluid at 575 K. The heat transfer coefficient between the panel and the fluid is 10 W/m2K. The properties of the panel are assumed to be constant during the heat treatment: thermal conductivity = 247 W/mK, density = 2770 kg/m³, and specific heat capacity = 875 J/kgk. We want to investigate the temperature change over time, and need to calculate the Biot number to decide whether to use a lumped capacitance method or a finite difference method. What is the Biot number for this case? Give your answer to 2 significant figures.
Transcribed Image Text:An aluminium panel, thickness 1.8 mm and initial temperature 293 K, is to be heat treated by submersion in a fluid at 575 K. The heat transfer coefficient between the panel and the fluid is 10 W/m2K. The properties of the panel are assumed to be constant during the heat treatment: thermal conductivity = 247 W/mK, density = 2770 kg/m³, and specific heat capacity = 875 J/kgk. We want to investigate the temperature change over time, and need to calculate the Biot number to decide whether to use a lumped capacitance method or a finite difference method. What is the Biot number for this case? Give your answer to 2 significant figures.
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