You wish to buy a new freezer for your basement. The primary useof the freezer will be to prepare ice for family parties. You havea very large family, with grandparents, parents, sisters, brothers,uncles, aunts, cousins, nephews, nieces, and grandchildren. As aresult, family birthday parties are held every couple of weeks, andyou need lots of ice for drinks. You want the freezer to convert10.1 kg of water at 23.0°C to 10.1 kg of ice at
−9.4°C
in 2.00 h. But, in order to keep your electric bill down, youwant the power rating of the freezer to stay below 100 W. Fromthese requirements, you determine the minimum COP of the freezerthat will satisfy your needs. (Consider that the specific heat ofwater is 4,186 J/(kg · °C), the specific heat of ice is 2,090 J/(kg· °C), the latent heat of fusion of water is 3.33 ✕ 105J/kg, and the latent heat of vaporization of water is 2.26 ✕106 J/kg.)
