Methods for Measurement of Thermal Properties

The number of measurements for natural gas hydrate thermal properties is several orders of magnitude lower than that for phase equilibrium properties. The experimental difficulties in thermal measurements center on the determination of 

Other attempts to avoid the experimental difficulties of measuring the thermal properties of gas hydrates have been to choose the easier route of thermal property measurements of cyclic ethers-ethylene oxide (EO) for structure I, or tetrahydro-furan (THF) for structure II. Since both compounds are totally miscible with water, liquid solutions can be made at the theoretical hydrate compositions (EO 7.67H20 or THF 17H20). 

Hydrates of EO and THF may be formed at atmospheric pressure without problems of occlusion or mass transfer at temperatures of 285.7 and 277.4 K, respectively. In such measurements, the host or water contribution is correctly determined. 

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