Working fluids for thermal energy conversion of waste heat from fuel cells using rankine cycle systems

摘要

An organic Rankine cycle system working fluid comprises one or more compounds of Formula (I)
€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ(I)€ƒ€ƒ€ƒ€ƒ€ƒCR' y ,
wherein y is 3 or 4 and each R' is independently H, F, I, Br, substituted or unsubstituted C3-C9 alkyl, substituted or unsubstituted C2-C9 alkenyl, substituted or unsubstituted C2-C9 alkoxy, substituted or unsubstituted fluoropolyether, substituted or unsubstituted aryl, substituted or unsubstituted C6-C9 alkylaryl, or substituted or unsubstituted C6-C9 alkenyaryl, provided said compound includes at least two carbon atoms, at least one fluorine atom, and no chloride atoms, and further provided that any OH substituted alkyl preferably has at least three carbon atoms and that if at least one R' is C3-C9 alkoxy, then said compound is not a perfluorinated compound.