How much electrical energy does the freezer need

Reference no: EM13983483

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. (c_water = 4.19x10³J/(kg x K ), c_ice = 2.01 x 10³J/(kg x K), L_f^H2O = 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?

Reference no: EM13983483

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