INSULATION FOR PIPE-IN-PIPE SYSTEMS
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United States of America Patent
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Issued Date -
Dec 10, 2009
app pub date -
Dec 9, 2008
filing date -
Dec 10, 2007
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A method of providing an insulated pipe-in-pipe assembly includes providing an inner pipe; providing a thermal insulation layer of a highly porous solid formed from a gel, the highly porous solid having pores smaller than 100 nanometre, the thermal insulation layer being provided around the inner pipe for thermal insulation of the inner pipe; providing a protective layer on the outer surface of the thermal insulation layer for protecting the thermal insulation layer, and providing a thick walled outer pipe around the protective layer. A Pipe-in-pipe assembly and a pipe-in-pipe section made by the method are also provided.
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