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Title: Measurements And Data For Carbon Dioxide In The Near Critical And Supercritical Region*
Author: James F. Ely, Neil A. Ollen
Source: 1983 International School of Hydrocarbon Measurement
Year Published: 1983
Abstract: Large scale use of carbon dioxide in enhanced oil recovery and supercritical extraction processes has given rise to a need for accurate thermophysical properties of this fluid and its mixtures. This is also true for metering associated with CO2 pipelines. Due to the proximity of Che critical point of CO2 to ambient temperatures (30A K or 88F), most engineering models are not of sufficient accuracy to be used in this custody transfer calculation. The capability of modeling the behavior and properties of CO2 and its mixtures in the extended critical region is essential to the development of efficient and scalable supercritical processes. An accurate model or equation of state does not presently exist. To overcome some of these problems a consortium of industrial corapanies has been formed to sponsor research at the National Bureau of Standards on near critical CO2 mixtures. This paper outlines the general problem being addressed at NBS and the anticipated results of the program.

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