Thermal conductivity measurement method
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专利名称：Thermal conductivity measurement method 发明人：Ronald T. Atkins
申请号：US06/375066
申请日：19820505
公开号：US04522512A
公开日：
19850611
专利内容由知识产权出版社提供
摘要：A method and apparatus for determining the bulk thermal conductivity of a particular material includes the steps of embedding a thermistor in the material for which the bulk thermal conductivity is to be measured, applying a small current from a constant current source to the thermistor, mathematically determining the temperature of the material, applying a larger current to the thermistor until a steady state thermal condition is obtained, calculating the thermistor resistance, and finally calculating the thermal conductivity of the material according to the formula ##STR1## where I is the large current, R is the thermistor resistance when heated by the larger current, r.sub.1 is the radius of the thermistor glass bead, T.sub.1 is the surface temperature of the glass envelope of the thermistor and T.sub.2 is the homogenous temperature of material whose bulk thermal conductivity is to be measured.
申请人：THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE ARMY
代理人：Darrell E. Hollis
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