Question

l kg of water for a party, and only have 5 minutes to do it. Relying on nothing es, a dixicup, duct tape and a piece of string, you manage to build a refrigerator but your keen physical abiliti unit which can do the job. The temperature inside the refrigeration unit is 273 K, and the temperature outside is 350 K. Since you area brilliant UIUC student, assume that your refrigerator has the maximum possible efficiency. The Latent Heat o Fusion of water is 3.33x 105 J/kg Assume that the initial temperature of the water is 273 K 3) What is the heat flow (Q cold/time ) out of the Cold well per second in J/s? H-cold-Q, cold/time = J/s TH 350 (K] Hot Qhot Work Cold T273 [K] Cold Refrigerator 4) What is the change (including the sign) in ic(including the sign) in enrpy i he wter per second in J(Ks)? J/(Ks) What is the heat flow (Q hot/time) into the Hot well per second in J/s? H-hot-Q-hot/time = J/s 6) How much POWER must you provide to drive your refrigerator in Watt W? (That is work done per second?) Power -

Answer 1

THot= 350k (3) Hunt L- CO (Tc

( Huat o cratn 23 3,5454 350-23 hot- Rcold Qnot lo ヒ hol1u 313.oy t- 3 CG) LiXIO