A freezer has a coefficient of performance of 2.40. The freezer is to convert 1.80 kg of water at 25.0°C to 1.80 kg of ice at -5.0 °C in an hour. (Cwater = 4187 J/kg K, L = 333 kJ/kg, Cice = 2010 J/kg .K) a) What amount of heat must be removed from the water at 25.0 °C to convert it to ice at -5.0 °C? b) How much electrical energy is consumed by the freezer during this hour? c) How much wasted heat is delivered to the room in which the freezer sits?
A freezer has a coefficient of performance of 2.40. The freezer is to convert 1.80 kg of water at 25.0°C to 1.80 kg of ice at -5.0 °C in an hour. (Cwater = 4187 J/kg K, L = 333 kJ/kg, Cice = 2010 J/kg .K) a) What amount of heat must be removed from the water at 25.0 °C to convert it to ice at -5.0 °C? b) How much electrical energy is consumed by the freezer during this hour? c) How much wasted heat is delivered to the room in which the freezer sits?
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Transcribed Image Text:A freezer has a coefficient of performance of 2.40. The
freezer is to convert 1.80 kg of water at 25.0°C to 1.80 kg
of ice at -5.0 °C in an hour.
(Cwater
4187 J/kg K, L = 333 kJ/kg,
2010 J/kg .K)
Cice
a) What amount of heat must be removed from the
water at 25.0 °C to convert it to ice at -5.0 °C?
b) How much electrical energy is consumed by the
freezer during this hour?
c)
How much wasted heat is delivered to the room in
which the freezer sits?
(Young and Freedman, 2016)
=
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