| abstract |
The invention provides a refrigerant comprising a mixture of three compounds selected from the group consisting of hydrofluorocarbons represented by the formula n n n n C₁H m F n (1) n n n nwherein when 1 is 1, m is an integer of 1 or 2, n is an integer of 2 or 3 and m + n =4; when 1 is 2, m is an integer of 1 to 4, n is an integer of 2 to 5 and m + m = 6; and when 1 is 3, m is an integer of 1 to 3, n is an integer of 5 to 7 and m + n = 8. |