Thermally insulated pipe for use at very high temperatures

Details Thermally insulated pipe for use at very high temperatures Thermally insulated pipe for use at very high temperatures

F - Mech Eng,Light,Heat,Weapons

16

L

F16L 59/14 (2006.01) F16L 59/10 (2006.01) F16L 59/15 (2006.01)

Patent

CA 2555756

The present invention provides an insulated pipe comprising a pipe and a composite insulation system, said composite insulation system comprising: (a) a first insulation layer comprising a first insulation material having a thermal conductivity k-factor value of less than 0.023 W/m-K at 38 ° C; and (b) at least one additional insulation layer comprising an insulation material having a thermal conductivity k-factor greater than that of the first insulation material and a maximum operating temperature limit less than that of the first insulation layer. The composite insulation system is bonded to an exterior surface of the pipe with the first insulation layer facing towards said exterior surface of the pipe. At least one of said first insulation layer or said at least one additional layer extends continuously about the exterior surface of the pipe. The present invention further provides an insulated pipe for use in an undersea pipeline and an insulated pipe for use in a subterranean pipeline.

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