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New Method of Measurement of Coefficient of Thermal Conductivity

Several conventional steady-state measuring methods of material coefficient of thermal conductivity was systemically compared and discussed. The limitations and shortcomings of the infinite flat layer method, the infinitely long cylinder method and the concentric spherical shell layer method were pointed out. A new method for measuring the material coefficient of thermal conductivity, standard sample method, was proposed. The measure principle, the preparation of standard sample, the measure process and the obtainment of the result were presented. The advantages and applicability of the standard sample method to measure coefficient of thermal conductivity were evaluated.