A Carnot freezer takes heat from water at inside it and rejects it to the room at a…

PHYSICS · Single correct · A Level · Physics · Engineering physics · Engineering physics

Problem

A Carnot freezer takes heat from water at

0^\circ\text{C}

inside it and rejects it to the room at a temperature of

27^\circ\text{C}

. The latent heat of ice is

336 \times 10^3 \text{ J kg}^{-1}

. If 5 kg of water at

0^\circ\text{C}

is converted into ice at

0^\circ\text{C}

by the freezer, then the energy consumed by the freezer is close to : (1)

1.51 \times 10^5 \text{ J}

(2)

1.68 \times 10^6 \text{ J}

(3)

1.71 \times 10^7 \text{ J}

(4)

1.67 \times 10^5 \text{ J}