Apparatus for direct measurement of insulation thermal performance at cryogenic temperatures
    2.
    发明授权
    Apparatus for direct measurement of insulation thermal performance at cryogenic temperatures 失效
    用于在低温下直接测量绝缘热性能的装置

    公开(公告)号:US07540656B1

    公开(公告)日:2009-06-02

    申请号:US11627783

    申请日:2007-01-26

    IPC分类号: G01N25/00 G01K17/00

    CPC分类号: G01N25/18

    摘要: An apparatus for measuring insulation thermal performance is provided, particularly between ambient and cryogenic temperatures. A warm-temperature boundary has a continuous sample contact surface that is divided into a metered central zone and a boundary guard zone. Each zone is independently heated, and the power necessary to maintain the central zone at constant temperature is directly equated to heat flux through the insulation at the temperature boundary conditions. Methods for measuring insulation thermal performance are also disclosed.

    摘要翻译: 提供了一种用于测量绝缘热性能的装置,特别是在环境温度和低温之间。 温暖边界具有连续的样品接触表面,分为计量中心区域和边界防护区域。 每个区域被独立加热,并且将中心区域保持在恒定温度所需的功率直接等于在温度边界条件下通过绝缘体的热通量。 还公开了用于测量绝缘热性能的方法。