A mass of 4.77 kg of chilled water at 0�C is placed in a freezer which is kept at −19.2�C. Approximately how much electric energy is needed to operate the compressor to cool this water to −19.2 �C if the room temperature is maintained at 24.2�C? The freezer works
as a Carnot engine, the specific heat of ice is 2.09 kJ/kg ·C and the specific heat of wateris 4.186 kJ/kg ·C.
Answer in units of kJ
i have no idea how to do this please help
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