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

Table 7

Experimental [11] and predicted solubility of ethane in pure water being in equilibrium with gas hydrates (liquid water-hydrate equilibrium) [4].

𝑇/K	𝑃/MPa	Experimental [11] 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%
277.3	10.1	4.37	5.00	14.4	4.90	12.1
277.8	15.1	4.37	5.17	18.3	5.12	17.2
278.5	20.1	4.37	5.42	24.0	5.43	24.3

^∗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.