How much electrical energy does the freezer need

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A freezer has a coefficient of performance of 3.2. A person puts 2.5kg of water at an initial temperature of 20 C into that freezer whose inside temperature is at a constant -8 oC. (cwater = 4.19x103J/(kg x K ), cice = 2.01 x 103J/(kg x K), LfH2O = 3.34x105J/kg)

(a) How much heat must be removed from the water to convert it into ice at -8 oC?

(b) How much electrical energy does the freezer need for the process?

(c) How much excess heat does the freezer dumb into it's environment?

Reference no: EM13983483

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