How much heat will be released in the room during four hours of operation of a refrigerator consuming power W=90 W, if its productivity is 2 kg of ice at a temperature T1 = 271°K per day, and cooling begins at a temperature T=293°K. Melting heat of ice I = 3.34 • 105 J/kg, heat capacity of water Cw = 4.2 • 103 J/kg • deg; heat capacity of ice Cl = 2.1 -103 J/kg • deg.

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