A New Technique for Hydrate Thermal Diffusivity Measurements |
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Authors: | D?J?Turner P?Kumar Email author" target="_blank">E?D?SloanEmail author |
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Affiliation: | (1) Center for Hydrate Research, Colorado School of Mines, Golden, Colorado, 80401, U.S.A;(2) Institute of Engineering & Ocean Technology, ONGC Complex Phase 11, New Mumbai, Maharashtra, India |
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Abstract: | Thermal property measurements of natural gas hydrates in various sediment mixtures are necessary to describe heat transfer
to surroundings during well boring and gas production. An apparatus for measuring thermal diffusivity in various mixtures
of hydrates with sediment has been constructed. The apparatus uses a new method for determining thermal diffusivity that has
advantages over the von Herzen and Maxwell probe method. The new experiment is simple and inexpensive to construct and appears
to be much more accurate than the ±30% reported for an earlier probe. The thermal diffusivity of ice has been measured to
determine the uncertainty of the technique, i.e., within ±6% with a 95% confidence level. The thermal diffusivity for pure
methane hydrate at various temperatures is reported.
Paper presented at the Fifteenth Symposium on Thermophysical Properties, June 22–27, 2003, Boulder, Colorado, U.S.A. |
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Keywords: | hydrate ice methane hydrate thermal conductivity thermal diffusivity |
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