1. Engineering
  2. Chemical Engineering
  3. please show all work also the sentence quotthe outer surface...

Question: please show all work also the sentence quotthe outer surface...

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Please show all work.

Also the sentence "The outer surface of the tank and the surrounding is by natural convection and radiation" should be "the outer surface of the tank is black and the heat transfer between the outer surface of the tank and the surroundings is by natural convection and radiation."

2. A 3 m internal diameter spherical tank made of 2 cm thick stainless steel (k 12 W/m-°C) is used to store iced water at Toi- 0°C. The tank is located in a room whose temperature is To2 -20°C. The walls of the room are also at 20°C. The outer surface of the tank and the surroundings is by natural convection and radiation. The convection heat transfer coefficients at the inner and outer surfaces of the tank are hi 78 W/m2°C and h2-8 W/m2-°C, respectively. Determine (a) the rate of heat transfer to the iced water in the tank, and (b) the amount of ice at 0°C that melts during a 24-h period. First, draw a schematic of the problem, list the assumptions, and draw a resistance network.

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