| abstract |
The present invention relates to a heat transfer method using a composition containing hydro (chloro) fluoroolefins. It more particularly relates to a heat transfer process comprising successively a step of evaporation of a refrigerant, a compression step, a step of condensing said fluid at a temperature greater than or equal to 70 ° C and a step of expansion of said fluid characterized in that the refrigerant comprises at least one hydrofluoroolefin having at least 4 carbon atoms represented by the formula (I) R CH = CHR wherein R and R independently represent alkyl groups having from 1 to 6 carbon atoms, substituted by at least one fluorine atom, optionally by at least one chlorine atom. |