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International Heat Transfer Conference 15

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

Measurement of Temperature Distribution for the Hydrate Formation and Dissociation in Porous Media

Mingjun Yang
Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education, Dalian University of Technology, Dalian 116024, P.R. China

Yongchen Song
Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education, Dalian University of Technology, No.2 Linggong Rd. Ganjingzi District, Liaoning 116024, China

Lanlan Jiang
Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education, Dalian University of Technology, Dalian 116024, China; Research Institute of Innovative Technology for the Earth, Kizugawa City, Kyoto 619-0292, Japan

Shenglong Wang
Dalian University of Technology, Dalian 116024, China

Yuechao Zhao
Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education, Dalian University of Technology, No.2 Linggong Rd. Ganjingzi District, Liaoning 116024, China

Jiafei Zhao
State Key Laboratory of Clean Energy Utilization, Institute for Thermal Power Engineering, Zhejiang University; Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education, Dalian University of Technology, No.2 Linggong Rd. Ganjingzi District, Liaoning 116024, China

DOI: 10.1615/IHTC15.tpp.008806
pages 8821-8828


MOTS CLÉS: Thermophysical properties, Measurement and instrumentation, THF hydrate, thermal property, temperature distribution, MRI

Résumé

Hydrate thermal property is crucial for natural gas hydrate exploitation and hydrate-based technology industrial applications. Hydrate formation is exothermic processes and hydrate dissociation is endothermic processes. The experimental data of thermal property for hydrate formation and dissociation is scarcity, especially for that in porous media. It is mainly caused by the limitation of measurement technology and the rapid hydrate formation rate. The purpose of this study is to provide a new experimental method for measurement of temperature profile in porous media. Some basic thermal data is obtained for Tetrahydrofuran (THF) hydrate formation and dissociation in porous media. Glass beads were accumulated to form porous media. There is no hydrate formation when the temperature is set to 269.15 K, and hydrate was formed at 265.15 K with a obvious induction time. Magnetic Resonance Imaging (MRI) images were obtained using a spin echo multi-slice pulse sequence. The experimental results showed that THF hydrate formed rapidly. The exothermic processes can be measured in this study. There is a obvious high temperature region around hydrate formation zones. The detail temperature distribution is hard to obtain due to the long MRI acquire time. The sensitivity of MRI system is high when temperature is above than 284.15 K.

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