The present invention relates to a method for exchanging heat with an object said method comprising using a heat transfer fluid wherein said heat transfer fluid comprises one or more chemical compounds having the general formula: (I) wherein: R.sub.1, R.sub.2, R.sub.3, R.sub.4 can be the same or different, linear or branched, partially fluorinated alkyl groups having a C1-C6 carbon chain. ##STR00001##