Test method for measuring insulation values of cryogenic pipes
van de Beld, C.
TNO Industrie en Techniek
In this paper a large-area heat flux and temperature sensor (HFT) is used for the evaluation of the insulation value of cryogenic pipes. The HFT is flexible and clamp-on. The test method is relatively simple and can be used in-situ. The HFT makes it possible to monitor insulation performance over elongated times and to study localized effects (thermal bridges).The method complies with the Standard Practice ASTM C 1041 - 85 (2007). The method is originally designed for subsea oil pipelines. Three commercial rigid cryogenic pipes are tested, using vacuum, polyisocyanurate and polyurethane insulation. The method is also used on flexible cryogenic pipes.
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16th International Conference and Exhibition on Liquefied Natural Gas, LNG 16, 18-21 April 2010, Oran, Algeria
IGT International Liquefied Natural Gas Conference Proceedings