Proceedings of the Korean Geotechical Society Conference (한국지반공학회:학술대회논문집)
- 2010.09a
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- Pages.263-268
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- 2010
Measurement of thermal properties by TPS-technique and thermal network analysis
TPS를 통한 열물성치 획득 및 네트워크모델을 이용한 열해석
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Yun, Tae-Sup
(Dept. of Civil Engineering, Yonsei University) ;
- Kim, Young-Jin (Dept. of Civil Engineering, Yonsei Univ.)
- Published : 2010.09.09
Abstract
Thermal characterization of geomaterials has significant implication on the geothermal energy, disposal of nuclear wastes, geological sequestration of carbon dioxides and recovery of hydrocarbon resources. Heat transfer in multiphase materials is dominated by the thermal conductivity of consisting components, porosity, degree of saturation and overburden pressure, which have been investigated by the empirical correlation at macro-scale. The thermal measurement by Transient Plane Source (TPS) and associated algorithm for interpretation of thermal behavior in geomaterials corroborate the robustness of sensing techniques. The method simultaneously provides thermal conductivity, diffusivity and volumetric heat capacity. The newly introduced thermal network model enables estimating thermal conductivity of geomaterials subjected to the effective stress, which has not been evaluated using previous thermal models. The proposed methods shows the applicability of reliability of TPS technique and thermal network model.