An AISI 316 stainless steel spherical container is used for storing chemicals undergoing exothermic reaction that provides a uniform heat flux of 60 kW/m² to the container’s inner surface. The container has an inner diameter of 1 m and a wall thickness of 5 cm. For safety reason to prevent thermal burn on individuals working around the container, it is necessary to keep the container’s outer surface temperature below 50°C. If the ambient temperature is 23°C, determine the necessary convection heat transfer coefficient to keep the container’s outer surface temperature below 50°C. Is the necessary convection heat transfer coefficient feasible with free convection of air? If not, discuss other option to prevent the container’s outer surface temperature from causing thermal burn.

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Air, T = 23°C T,<50°C Din = 1 m AISI 316 spherical container ←t = 5 cm Chemical reaction