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A freezer has a coefficient of performance of 6.30. It is advertised as using 466 kWh/yr....

A freezer has a coefficient of performance of 6.30. It is advertised as using 466 kWh/yr. Note: One kilowatt-hour (kWh) is an amount of energy equal to running a 1-kW appliance for one hour.

(a) On average, how much energy does it use in a single day?
J

(b) On average, how much energy does it remove from the refrigerator in a single day?
J

(c) What maximum mass of water at 22.8°C could the freezer freeze in a single day? (The latent heat of fusion of water is 3.33 multiply.gif 105 J/kg, and its specific heat is 4186 J/kg · °C.)
kg

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Answer #1

Ik wh Answers a) the energy used in a single day E=446 kk 35 days 7 T year) = 1.22 kwn (3.6x10€!]/day = 4.39x10$J/day 65 h co

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