??? ?? ????? ???? Refrigerator ???? ?????? ?????? ??? ??????? ?? ???? ? ??? ?? ????? ??? ?????? ????. ?? ?? ???? ???? ????? are ? refrigerators ?? ????? ?? ?? ????. ??? ?????? ? ? ????? ?? ???? ?? ???? ????? ??????? ? ?? ??????? ?? known. ????? ??? ??? ?? ?? ??????? ????? ???? ??? reasonable ?????? ?? ???? ? ????? ?? ???? efficiency ??? ????? ????

?????? ???? ??? ????? ?? ???? ????. ??/????/??? ??? ????? ? ????? ???? ?? ????? ? ????? ?? ??????/??? ?????/??? ?????/????? ????? ?? ???? ????? ????? ??/?????/????? ????. ???? ??? ????? ?? ????? ????/???? ????/????? ???? ??? ? ????? ?? ?????/??????? ??????/?????/?????? ???????. ?????/???????/???? ????? ?? ?? ????/????/????? ?????? ??? ?? ?? ???