MEASUREMENT AND MOLDING OF THE EFFECTIVE THERMAL CONDUCTIVITY FOR POROUS METHANE HYDRATE SAMPLES
The effective thermal conductivities of gas-saturated porous methane hydrates were measured by a single-sided TPS technique and simulated by a generalized fractal model of porous media that based on self-similarity. The density of porous hydrate, which was measured by the volume of the sample in the experimental system, was used to determine the porosity of methane hydrate samples. The fractal model was based on a Sierpinski carpet model and a thermal-electrical analogy technique and one-dimensional heat flow assumption. Both the experimental and computational results show the effective thermal conductivity of methane hydrate decreases with the porosity increase. The porosity of 0.3 can reduce the thermal conductivity of the methane hydrate by 25％. By analysis of the experimental data and the simulative result, it is possible that the thermal conductivity of the zero-porosity methane hydrate is above 0.7 W/m/K.
Dongliang Li Song He Deqing Liang
Key Laboratory of Renewable Energy and Gas Hydrate Guangzhou Institute of Energy Conversion, CAS Gua Key Laboratory of Renewable Energy and Gas Hydrate Guangzhou Institute of Energy Conversion, CAS
国际会议
The Ninth Asian Thermophysical Properties Conference(第九届亚洲热物理性能会议 ATPC 2010)
北京
英文
857-863
2010-10-19（万方平台首次上网日期，不代表论文的发表时间）