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US 9,957,428 B2Granted
Fluorinated olefins as working fluids and methods of using same
Assignee3M Innovative Properties Company
InventorsMichael J. Bulinski, Michael G Costello, John G. Owens, Michael J. Rice
Life of this patent
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Abstract
A working fluid that includes a fluorinated olefin compound represented by the following general formula (I). In some embodiments, an apparatus for heat transfer is provided. The apparatus includes a device and a mechanism for transferring heat to or from the device. In some embodiments, a fire extinguishing composition is provided. In some embodiments, an apparatus for converting thermal energy into mechanical energy in a Rankine cycle is provided.
Claims4
An apparatus for heat transfer comprising:
- a device;
- and
- a mechanism for transferring heat to or from the device, the mechanism comprising a heat transfer fluid that comprises a compound represented by the following general formula (I):
- wherein (i) Rf1 and Rf2 are independently linear or branched perfluoroalkyl groups having with 1-8 carbon atoms and optionally comprise at least one catenated heteroatom, or (ii) Rf1 and Rf2 are bonded together to form a ring structure having 4-6 carbon atoms and optionally comprise one or more catenated heteroatoms;
- with the proviso that if Rf1 and Rf2 are bonded together to form a ring structure comprising a nitrogen heteroatom, said nitrogen heteroatom is tertiary and is bonded to a perfluoroalkyl group having 1-3 carbon atoms.
2 more elements
A method of transferring heat comprising:
- providing a device;
- and
- transferring heat to or from the device using a heat transfer fluid that comprises a compound represented by the following general formula (I):
- wherein (i) Rf1 and Rf2 are independently linear or branched perfluoroalkyl groups having with 1-8 carbon atoms and optionally comprise at least one catenated heteroatom, or (ii) Rf1 and Rf2 are bonded together to form a ring structure having 4-6 carbon atoms and optionally comprise one or more catenated heteroatoms;
- with the proviso that if Rf1 and Rf2 are bonded together to form a ring structure comprising a nitrogen heteroatom, said nitrogen heteroatom is tertiary and is bonded to a perfluoroalkyl group having 1-3 carbon atoms.
2 more elements
Dependencies are inferred from the claim text.