________________
U.S. Refrigerator Energy Use vs. Time
1978 Cal Standard
Refrigerator Size (cubic feet)
+
1980 Cal Standard
1987 Cal Standard
Average Eerngy Use per Unit (kWh per year)
Refrigerator volume (cubic feet)
1990 Federal Standard
Energy Use per Unit
1993 Federal Standard
2001 Federal Standard
OHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHTO
X
1963
1967
1981 1979
1989 1987 1985
1993
1983
1991
1947 1949
1951
1953 1955 1957 1959
1961
81
1969 1971 1973 1975
1977
1997 1999
2001
