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
105 J/kg, and its specific heat is
4186 J/kg · °C.)
kg
Homework Answers
![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](http://img.homeworklib.com/questions/059e7ef0-92ab-11ea-b684-bd6d31e38014.png?x-oss-process=image/resize,w_560)
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A freezer has a coefficient of performance of 6.30. It is
advertised as using 466 kWh/yr....
4-10. The latent heat of fusion of ice is 333 kJ/kg. In the freezer compartment of...
4-10. The latent heat of fusion of ice is 333 kJ/kg. In the freezer compartment of a refrigerator, a tray holds 12 cubes of water each of mass 8.0 g. If the C.O.P. of the refrigerator is 3.3. how many kilowatt-hours of electrical energy would be required to run the refrigerator to change the water cubes (at 0°C) into ice cubes (at 0°C)?
The largest of the Great Lakes, Lake Superior, contains about 1.20 × 1016 kg of water....
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A freezer maintains an interior temperature inside of −24.0°C and has a coefficient of performance of 3.00. The freezer sits in a room with a temperature of 19.0°C. The freezer is able to completely convert 26.0 g of liquid water at 19.0°C to ice at −24.0°C in one minute. What input power (in watts) does the freezer require? (The specific heat of liquid water is 4.186 J/(g · °C), the specific heat of ice is 2.090 J/(g · °C), and...
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A freezer has a coefficient of performance of 2.60. The freezer is to convert 1.86 kg...
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A certain brand of freezer is advertised to use 580 kW⋅h of energy per year. A....
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