关键词: 导热系数, 探针法, 水合物, 测定

Abstract: The thermal conductivity of ice formed in SDS solution,hydrate formed by THF and water,sand with different water content,hydrate formed by sand and THF solutions were measured in the laboratory by probe method.The results show that the relation of conductivity and temperature for ice and hydrate are diverse,when the temperature rise,the conductivity of ice drops,the hydrate gives a reverse behavior,This is because they have different construction.For the hydrate formed in the sand and solutions with different concentration of THF,the rate of thermal conductivity changed with temperature are dissimilar,when the temperature raise from -1 ℃ to 2 ℃,the conductivity of hydrate formed in the solution with THF concentration 14.3%,19.0% change from 1.979W/(m·K) and 1.898W/(m·K) to 2.068W/(m·K) and 2.012W/(m·K),the increasing speed are 4.50% and 6.01%,respectively.When the mass persent of THF equal 19.0%,the mole ratio of THF to water is at the most suitable value,and the gas hydrate has the lowest thermal conductivity coefficient.

Key words: Conductivity,    , Probe method,    , Hydrate,     , Measurement