BH is exploring non-conventional sCO2 Allam power cycles and need to validate the appropriate fluid property model. Specifically, BH require the phase behaviour (dew point and bubble point curves) to be investigated for one recycle CO2, one nominal oxidant, and two oxidant variation mixture streams. UWA propose to use a novel sensor to identify the most appropriate model for the sCO2 based mixtures and tuning requirements. The microwave resonator for vapour liquid equilibrium (MRVLE) is a sensor designed to measure phase behaviour in multicomponent mixtures. It can measure dew points, bubble points, and liquid volume fractions. Measuring liquid volume fractions is useful for thermodynamic model selection because it provides information on both phase densities and phase compositions.
In this proposal the MRVLE will be used to measure three dew points and one liquid volume fraction per mixture, and three bubble points for the recycle CO2 and nominal oxidants. This will provide sufficient information to identify the phase boundaries and identify if any compressor or pump will be at risk of operating in a two-phase region. Additionally, the measurements of liquid volume fraction will inform model selection and whether the best model requires tuning. Results of the project will validate the phase properties of sCO2 based mixtures.
Partners: Baker Hughes, The University of Western Australia
Project Leader: Dr. Paul Stanwix
Duration: 8 Months