Question: problem 7-128 7-128 A 3 - m - internal - diameter spherical tank made of 1 - cm - thick stainless steel ( k =

problem 7-128

7-128 A 3 - m - internal - diameter spherical tank made of 1 - cm - thick stainless steel ( k = 15 W / m - K ) is used to store iced water at 0 C . The tank is located outdoors at 30 C and is subjected to winds at 25 km / h . Assuming the entire steel tank to be to be at 0 C and thus its thermal resistance to be neg ligible , determine ( a ) the rate of heat transfer to the iced water in the tank and ( b ) the amount of ice at 0 C melts during a 24 - h period . The heat of fusion of water at atmo spheric pressure is hy = 333.7 kJ / kg . Disregard any heat transfer by radiation . Fundamentals

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