A COMPREHENSIVE EVALUATION OF EMPIRICAL CORRELATIONS FOR COMPUTING THE SOLUBILITY OF CO_2 IN WATER

摘要

A new correlation to estimate the solubility of carbon dioxide in water for the temperature interval of geothermal interest (from 25℃ to 350℃) is proposed. This equation was derived from a comprehensive statistical analysis applied to an up-dated thermodynamic database containing experimental solubility data reported in the literature. In addition, a useful equation is presented to quantify the propagated error generated through the use of the new polynomial correlation. These equations will be implemented into a new geothermal wellbore simulator (under construction) for modelling the vertical-ascend of two-phase flow in geothermal wells.