The refrigerator operates with a power of 250 watts, and is in it all the time....

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The refrigerator operates with a power of 250 watts, and is in it all the time. temperature of 0C. The ambient temperature is 37C. Walls refrigerators have a total area of 3 m and are made of material with an average thickness of 7 cm and heat transfer at 0,04 W/(Km). How long does it take to freeze 5 kg of chilled water at 0C if the refrigerator is operated 3.5 times Worse than the ideal Carnot refrigerator? (Melting temperature of the ice is 336 kJ/kg.) [Solution: t = 3624 s = 1 h 24 s.] The refrigerator operates with a power of 250 watts, and is in it all the time. temperature of 0C. The ambient temperature is 37C. Walls refrigerators have a total area of 3 m and are made of material with an average thickness of 7 cm and heat transfer at 0,04 W/(Km). How long does it take to freeze 5 kg of chilled water at 0C if the refrigerator is operated 3.5 times Worse than the ideal Carnot refrigerator? (Melting temperature of the ice is 336 kJ/kg.) [Solution: t = 3624 s = 1 h 24 s.]

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