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Measuring and modeling thermal conductivity of gas hydrate-bearing sand
Huang, DZ; Fan, SS
2005-01-25
Source PublicationJOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
Volume110Issue:B1
AbstractEffective thermal conductivity (ETC) of both tetrahydrofuran (THF) and methane hydrate-bearing sandy porous media was measured by the Hot Disk Thermal Constant Analyser. Thermal conductivity of methane hydrate is 0.575 W m(-1) K-1 at 0degreesC and 6.6 MPa (methane gas pressure), which is close to THF hydrate's 0.51 W m(-1) K-1 at 0degreesC and 0.1 MPa (atmosphere pressure). However, the measured 1 W m(-1) K-1 ETC of methane hydrate-bearing sand is significantly lower than that of THF hydrate-bearing sand at similar to2 W m(-1) K-1. This is because the methane hydrate formed with a sodium dodecyl sulfate (SDS) solution in sand at our laboratory has a "wall creeping'' growth characteristic and consequently a large part of the pores were filled with methane free gas. ETCs of sand containing gas hydrates were also calculated using a renormalization method. The process involves sample partitioning, labeling, initial value assignments, and renormalization calculations. A Monte Carlo analysis was applied to sample laboratory-scale gas hydrate-bearing sand assemblies. We found that the renormalization modeling results agreed well with measured ETCs when each photo of a 1.3 mm x 1.3 mm subsample was divided into 16 or more blocks.
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1029/2004JB003314
WOS Subject ExtendedGeochemistry & Geophysics
WOS KeywordMETHANE HYDRATE ; THERMOELECTRIC-MATERIALS ; ENERGY RESOURCE ; HEAT-CAPACITY ; CLATHRATE ; SEDIMENTS ; DIFFUSIVITY ; MIXTURES
Indexed BySCI
Language英语
WOS SubjectGeochemistry & Geophysics
WOS IDWOS:000226686500004
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Document Type期刊论文
Identifierhttp://ir.giec.ac.cn/handle/344007/10221
Collection中国科学院广州能源研究所
Affiliation1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou Ctr Gas Hydrate Res, Guangzhou 510640, Peoples R China
2.Univ Sci & Technol China, Dept Thermal Sci & Energy Engn, Anhua 230026, Peoples R China
Recommended Citation
GB/T 7714
Huang, DZ,Fan, SS. Measuring and modeling thermal conductivity of gas hydrate-bearing sand[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,2005,110(B1).
APA Huang, DZ,&Fan, SS.(2005).Measuring and modeling thermal conductivity of gas hydrate-bearing sand.JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,110(B1).
MLA Huang, DZ,et al."Measuring and modeling thermal conductivity of gas hydrate-bearing sand".JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH 110.B1(2005).
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