Abstract
This paper reports three-phase (ice + hydrate + vapor) equilibrium pressure-temperature condition measurement in CO_2 + H_2O system at temperatures below the freezing point of water (199.1 K to 247.1 K). The phase equilibrium pressures measured in the present study are from 34.3 kPa to 406.6 kPa. The measurements were performed using the batch, isochoric method. The results of the present measurements complement the lack of the literature data on the phase equilibrium conditions at the above temperature range results may contribute to understanding of CO_2 hydrate-related environmental issues and technologies below the water freezing temperature such as Martian environment, fire extinguisher and working media of power generation system.
