Question: 3) A 5-m-internal-diameter spherical tank made of 1.5-cm-thick stainless steel AISI 302 is used to store iced water at 0C. The tank is located

3) A 5-m-internal-diameter spherical tank made of 1.5-cm-thick stainless steel AISI 302

3) A 5-m-internal-diameter spherical tank made of 1.5-cm-thick stainless steel AISI 302 is used to store iced water at 0C. The tank is located in a room whose temperature is 30C. The walls of the room are also at 30C. The outer surface of the tank is black ( = 1), and heat transfer between the outer surface of the tank and the surroundings is by natural convection and radiation. The convection heat transfer coefficients at the inner and the outer surfaces of the tank are 80 W/m-K and 10 W/m-K, respectively. Determine: a) the rate of heat transfer to the iced water in the tank b) the temperature of the inner and the outer surfaces of the tank.

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