Intro to Heat Engines Video Lessons

Concept

# Problem: A certain brand of freezer is advertised to use 880 kW•h of energy per year.A) Assuming the freezer operates for 6 hours each day, how much power does it require while operating?P = ?B) If the freezer keeps its interior at a temperature of -6.0°C in a 20.0°C room, what is its theoretical maximum performance coefficient?K = ?C) What is the theoretical maximum amount of ice this freezer could make in an hour, starting with water at 20.0°C?m = ?

###### FREE Expert Solution

The power required to operate the engine is:

$\overline{){\mathbf{p}}{\mathbf{=}}\frac{\mathbf{E}}{\mathbf{t}}}$, where E is energy and t is time.

###### Problem Details

A certain brand of freezer is advertised to use 880 kW•h of energy per year.

A) Assuming the freezer operates for 6 hours each day, how much power does it require while operating?

P = ?

B) If the freezer keeps its interior at a temperature of -6.0°C in a 20.0°C room, what is its theoretical maximum performance coefficient?

K = ?

C) What is the theoretical maximum amount of ice this freezer could make in an hour, starting with water at 20.0°C?

m = ?