A heat transfer device including a vapor compression circuit that comprises at least one vapor compression circuit element, and preferably a plurality of such elements, said vapor compression circuit element, comprising at least one layer consisting of a composition comprising a copolyamide of formula X/10.T/Y, wherein: - X represents either the remnants of an aliphatic amino acid comprising from 8 to 18 carbon atoms, or a lactam, or the X 1.X 2 unit representing the remnants from the condensation of an aliphatic diamine comprising from 6 to 18 carbon atoms and of a (cyclo)aliphatic diacid comprising from 6 to 18 carbon atoms; - 10.T represents the remnants of the condensation of a decanediamine and terephthalic acid; and - Y represents the remnants of the condensation of an aliphatic diamine comprising from 9 to 14 carbon atoms and an aromatic diacid, Y being different from the unit 10.T; the molar ratio of 10.T units in the copolyamide being greater than 0%; the molar ratio of Y units in relation to all of the 10.T and Y units being from 0 to 30%; and the proportion of X units being from 0.4 to 0.8 mole for one mole of 10.T and Y semi-aromatic units, said element being a multilayer tube, preferably successively comprising: - an inner layer which is said layer consisting of a composition comprising a copolyamide; - optionally, a first intermediate layer placed on top of the latter, consisting of a first composition comprising an elastomeric material; - optionally, a second intermediate layer placed on top of the latter, consisting of a reinforcing fabric; - an outer layer placed on top of the latter, consisting of a second composition comprising an elastomeric material; each composition comprising an elastomeric material preferably being a composition comprising an ethylene-propylene rubber or an ethylene-propylene-diene monomer rubber. - X represents either the remnants of an aliphatic amino acid comprising from 8 to 18 carbon atoms, or a lactam, or the X 1.X 2 unit representing the remnants from the condensation of an aliphatic diamine comprising from 6 to 18 carbon atoms and of a (cyclo)aliphatic diacid comprising from 6 to 18 carbon atoms; - 10.T represents the remnants of the condensation of a decanediamine and terephthalic acid; and - Y represents the remnants of the condensation of an aliphatic diamine comprising from 9 to 14 carbon atoms and an aromatic diacid, Y being different from the unit 10.T; the molar ratio of 10.T units in the copolyamide being greater than 0%; the molar ratio of Y units in relation to all of the 10.T and Y units being from 0 to 30%; and the proportion of X units being from 0.4 to 0.8 mole for one mole of 10.T and Y semi-aromatic units, said element being a multilayer tube, preferably successively comprising: - an inner layer which is said layer consisting of a composition comprising a copolyamide; - optionally, a first intermediate layer placed on top of the latter, consisting of a first composition comprising an elastomeric material; - optionally, a second intermediate layer placed on top of the latter, consisting of a reinforcing fabric; - an outer layer placed on top of the latter, consisting of a second composition comprising an elastomeric material; each composition comprising an elastomeric material preferably being a composition comprising an ethylene-propylene rubber or an ethylene-propylene-diene monomer rubber. the molar ratio of 10.T units in the copolyamide being greater than 0%; the molar ratio of Y units in relation to all of the 10.T and Y units being from 0 to 30%; and the proportion of X units being from 0.4 to 0.8 mole for one mole of 10.T and Y semi-aromatic units, said element being a multilayer tube, preferably successively comprising: - an inner layer which is said layer consisting of a composition comprising a copolyamide; - optionally, a first intermediate layer placed on top of the latter, consisting of a first composition comprising an elastomeric material; - optionally, a second intermediate layer placed on top of the latter, consisting of a reinforcing fabric; - an outer layer placed on top of the latter, consisting of a second composition comprising an elastomeric material; - an inner layer which is said layer consisting of a composition comprising a copolyamide; - optionally, a first intermediate layer placed on top of the latter, consisting of a first composition comprising an elastomeric material; - optionally, a second intermediate layer placed on top of the latter, consisting of a reinforcing fabric; - an outer layer placed on top of the latter, consisting of a second composition comprising an elastomeric material; each composition comprising an elastomeric material preferably being a composition comprising an ethylene-propylene rubber or an ethylene-propylene-diene monomer rubber.