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Hot wire needle probe for thermal conductivity detection

United States Patent

November 10, 2015
View the Complete Patent at the US Patent & Trademark Office
Idaho National Laboratory - Visit the Technology Transfer and Commercialization Office Website
An apparatus comprising a needle probe comprising a sheath, a heating element, a temperature sensor, and electrical insulation that allows thermal conductivity to be measured in extreme environments, such as in high-temperature irradiation testing. The heating element is contained within the sheath and is electrically conductive. In an embodiment, the heating element is a wire capable of being joule heated when an electrical current is applied. The temperature sensor is contained within the sheath, electrically insulated from the heating element and the sheath. The electrical insulation electrically insulates the sheath, heating element and temperature sensor. The electrical insulation fills the sheath having electrical resistance capable of preventing electrical conduction between the sheath, heating element, and temperature sensor. The control system is connected to the heating element and the temperature sensor.
Condie; Keith Glenn (Idaho Falls, ID), Rempe; Joy Lynn (Idaho Falls, ID), Knudson; Darrell Lee (Firth, ID), Daw; Joshua Earl (Idaho Falls, ID), Wilkins; Steven Curtis (Idaho Falls, ID), Fox; Brandon S (Ferron, UT), Heng; Ban (Logan, UT)
U.S. Department of Energy (Washington, DC)
13/ 648,502
October 10, 2012
GOVERNMENT INTERESTS The United States Government has rights in this invention pursuant to Contract No. DE-AC07-05-1D14517, between the U.S. Department of Energy (DOE) and Battelle Energy Alliance.