A novel correlation approach to estimate thermal conductivity of pure carbon dioxide in the supercritical region

In this paper, a new correlation to calculate the thermal conductivity of supercritical carbon dioxide based on 668 data points from the literature is introduced. The proposed correlation is valid in temperature range from 310 to 960 K, and pressures range between 7.4 and 210 MPa. The average absolute error of the model was found to be 2.7 and 2.4% in the comparison with the literature and NIST data respectively, which demonstrates superiority of the model over other methods.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► Valid in temperature range from 310 to 960 K and pressures range between 7.4 and 210 MPa. ► AARE% of 2.7 and 2.4 in the comparison with the literature data and NIST web-book respectively. ► Overall superiority over other methods.