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A potential systematic error when measuring the thermal conductivity of porous rocks saturated with a low-conductivity fluid

Authors
Journal
Tectonophysics
0040-1951
Publisher
Elsevier
Publication Date
Volume
41
Identifiers
DOI: 10.1016/0040-1951(77)90177-9

Abstract

Abstract Even when there is a perfect macroscopic fit between the surfaces of a specimen and the apparatus used for thermal-conductivity measurements, there is a residual granular contact resistance which cannot always be ignored, whether or not solid or crushed samples are used. It is shown that ignoring the granular contact resistance when porous materials are saturated with low-conductivity materials can lead to results that are seriously in error; in some particularly bad situations the errors can be greater then 100%. A method is described for detecting the existence of, and subsequently correcting for, the contact resistance in those cases where only single specimens are available.

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