World-first SI-traceable primary standard flow measurement facility for dense phase CO2
World-first SI-traceable primary standard flow measurement facility for dense phase CO2
Similar to how oil and gas are traded worldwide, carbon capture utilisation and storage (CCUS) is built on a framework of government subsidies, regulations and commercial contracts underpinned by quantity and quality measurements of the CO2 captured, transported and stored. To maintain confidence in these measurements’ accuracy, calibration of the custody transfer flow meters and composition analysers is critical.
TÜV SÜD National Engineering Laboratory, through the ENCASE Project and the Flow Programme, has developed the first primary standard flow calibration facility for liquid and supercritical CO2 (i.e. dense phase). This facility will provide SI-traceable flow calibrations and R&D testing, ensuring measurement reliability.
The facility is a DN80, ANSI#1500 stainless steel closed loop flow calibration facility with an inline heat exchanger to allow fine temperature control of flowing liquid CO2. The test section can be configured flexibly to suit the equipment under test, and can be utilised for research, development, testing, calibration and validation by OEMs, operators and academia.
Many CCUS pipelines and metering stations will operate in the liquid and supercritical phases. These fluid phases offer an opportunity to transport large masses of CO2 with minimal frictional losses due to the low viscosity of CO2 in this phase. It is important that we can calibrate and understand the behaviour of flow meters in their operational conditions.
The CCUS transport network will likely utilise the existing array of flow metering technologies currently used in custody transfer metering, such as ultrasonic, Coriolis, differential pressure and turbine meters. However, each metering technology has strengths and weaknesses which should be assessed before selecting the appropriate technology for the application. Pay attention to the additional sources of error and uncertainty that can occur from CO2’s complex phase behaviour.
TÜV SÜD’s flow measurement experts provide a range of advisory services for flow meter selection including blind comparison tests and factory acceptance tests (FAT) assessing how meters perform within required specifications.
TÜV SÜD National Engineering Laboratory is a world-class provider of technical advisory, research, measurement, and testing services to clients across many industries including oil & gas, water, power & energy, and government.
TÜV SÜD National Engineering Laboratory is the UK’s National Measurement Institute responsible for the management of the UK National Standard for Flow Measurement.
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