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Главная Архив Thermal Letter Оргкомитет Будущие конференции AIHTC
International Heat Transfer Conference 3

ISSN: 2377-424X (online)
ISSN: 2377-4371 (flashdrive)

PROBE CONSTANT FOR IN-SITU DETERMINATION OF THERMAL CONDUCTIVITIES OF SOILS

S.T. Hsu
Virginia Polytechnic Institute Blacksburg, Virginia

H.S. Kao
Virginia Polytechnic Institute Blacksburg, Virginia

W.W. Lee
Virginia Polytechnic Institute Blacksburg, Virginia

DOI: 10.1615/IHTC3.200
pages 81-88

Аннотация

In using a heated probe of finite diameter for the in-situ determination of thermal conductivities of soils, the theory of line heat source can not be directly applied. Consequently, the energy equation must be modified. The probe actually replaces a small core of the specimen. A method has been found to compensate for the difference in heat dissipation between the instrument and the displaced core. Each probe is given a constant for a specific range of thermal conductivity and moisture content. By inserting the constant in the equation for the line heat source, accurate results have been obtained.

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