Development of Predictive Techniques for Estimating Liquid Water-Hydrate Equilibrium of Water-Hydrocarbon System

Table 6

Experimental [16] and predicted solubility of ethane in pure water being in equilibrium with gas hydrates (liquid water-hydrate equilibrium) [4].

𝑇/K	𝑃/MPa	Experimental [16] ethane solubility/mole fraction (×10^4)^∗	Predicted ethane solubility using ANN algorithm/mole fraction (×10^4)	AD%	Predicted ethane solubility using thermodynamic model/mole fraction (×10^4)	AD%
277.31	51	4.12	5.00	21.4	4.91	19.2
277.82	101	4.12	5.17	25.5	5.13	24.5
278.46	151	4.12	5.40	31.1	5.42	31.6

^∗Experimental solubility data are not temperature dependent and cannot be considered reliable. Therefore, the pseudo-experimental data generated from the thermodynamic model were used for training.