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Protocol for measuring the thermal properties of a supercooled synthetic sandwater-gas-methane hydrate sample

Muraoka, M. and Susuki, N. and Yamaguchi, H. and Tsuji, T. and Yamamoto, Y. (2016) Protocol for measuring the thermal properties of a supercooled synthetic sandwater-gas-methane hydrate sample. Journal of Visualized Experiments, 2016 (109). ISSN 1940-087X

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Abstract

Methane hydrates (MHs) are present in large amounts in the ocean floor and permafrost regions. Methane and hydrogen hydrates are being studied as future energy resources and energy storage media. To develop a method for gas production from natural MH-bearing sediments and hydrate-based technologies, it is imperative to understand the thermal properties of gas hydrates. The thermal properties' measurements of samples comprising sand, water, methane, and MH are difficult because the melting heat of MH may affect the measurements. To solve this problem, we performed thermal properties’ measurements at supercooled conditions during MH formation. The measurement protocol, calculation method of the saturation change, and tips for thermal constants' analysis of the sample using transient plane source techniques are described here. The effect of the formation heat of MH on measurement is very small because the gas hydrate formation rate is very slow. This measurement method can be applied to the thermal properties of the gas hydrate-water-guest gas system, which contains hydrogen, CO2, and ozone hydrates, because the characteristic low formation rate of gas hydrate is not unique to MH. The key point of this method is the low rate of phase transition of the target material. Hence, this method may be applied to other materials having low phase-transition rates.

Item Type:Article
Uncontrolled Keywords:hydrogen, methane, silicon dioxide, water, chemistry, devices, heat, phase transition, procedures, thermometry, Hot Temperature, Hydrogen, Methane, Phase Transition, Silicon Dioxide, Thermometry, Water
Subjects:T Technology > T Technology (General)
Divisions:Malaysia-Japan International Institute of Technology
ID Code:73716
Deposited By: Haliza Zainal
Deposited On:18 Nov 2017 01:18
Last Modified:18 Nov 2017 01:18

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