Meyer, C.
and Harvey, A.
(2015),
Dew-point Measurements For Water In Compressed Carbon Dioxide, Aiche Journal, [online], https://doi.org/10.1002/aic.14818, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=917841
(Accessed October 11, 2024)
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Dew-point Measurements For Water In Compressed Carbon Dioxide
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Author(s)
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Abstract
When transporting CO2 for sequestration, it is important to know the water dew point in order to avoid condensation that can lead to corrosion. We have constructed a flow apparatus to measure the water content at saturation in a compressed gas. A saturator humidifies the flowing gas by equilibrating it with liquid water. Then, a gravimetric hygrometer measures the water mole fraction of the humid gas. We report dew-point data on six isotherms between 10 °C and 80 °C at pressures from 0.5 MPa to 5 MPa. Our uncertainties in water content at the dew point (expanded uncertainty with coverage factor k=2) are on average 0.3%, significantly smaller than in any previous work. The data have been analyzed to extract the interaction second virial coefficient; our values are consistent with the theoretical estimates of Wheatley and Harvey but have a much smaller uncertainty.Citation
Aiche Journal
Volume
61
Issue
9
Pub Type
Journals
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Keywords
dew point, thermophysical properties, mixtures, saturated water vapor pressure, water vapor enhancement factor
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Created August 6, 2015, Updated April 14, 2022