An ice-making machine inside a refrigerator operates in a Carnot cycle. It takes

Question

An ice-making machine inside a refrigerator operates in a Carnot cycle. It takes heat from liquid water at 0.0*C and rejects heat to a room at a temp of 20.1*C. Suppose that liquid water with a mass of 78.4kg at 0.0*C is converted to ice at the same temp.
Take heat of fusion for water to be Lsubf = 3.34x10^5 J/kg
How much heat Q _h is rejected to the room? An ice-making machine inside a refrigerator operates in a Carnot cycle. It takes heat from liquid water at 0.0*C and rejects heat to a room at a temp of 20.1*C. Suppose that liquid water with a mass of 78.4kg at 0.0*C is converted to ice at the same temp.
Take heat of fusion for water to be Lsubf = 3.34x10^5 J/kg
How much heat Q _h is rejected to the room?
Take heat of fusion for water to be Lsubf = 3.34x10^5 J/kg
How much heat Q _h is rejected to the room?

Explanation / Answer

total energy to be supplied =heat of fusion*total mass of water

=3.34*10^5*78.4
=26185600 joules
=2.61856*10^7 Nm

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