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Measurement and Correlation of the Thermal Conductivity of Isobutane From 114 K to 600 K at Pressures to 70 MPa

Published

Author(s)

Richard A. Perkins

Abstract

New experimental data on the thermal conductivity of isobutane are reported that allow improved correlations to be developed. Previous correlations havebeen limited by a lack of thermal conductivity data for the vapor and compressed liquid at temperatures below 300 K and near the critical point. In addition,significant discrepancies were noted in the available high-temperature thermal conductivity data. These new experimental data, covering a temperature rangefrom the triple point at 113.55 K to 600 K and a pressure range of 0.1 to 70 MPa, are used together with the previously available data to develop improvedcorrelations for the thermal conductivity of isobutane. The quality of the new data is such that the thermal-conductivity correlation for isobutane is estimatedto have an uncertainty of about 3 % at a 95 % confidence level, with the exception of state points near the critical point and the dilute gas, where theuncertainty of the correlation increases to 5 %.
Citation
Journal of Chemical and Engineering Data
Volume
47
Issue
No. 5

Keywords

correlation, critical enhancement, isobutane, thermal conductivity, transport properties

Citation

Perkins, R. (2002), Measurement and Correlation of the Thermal Conductivity of Isobutane From 114 K to 600 K at Pressures to 70 MPa, Journal of Chemical and Engineering Data, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=831806 (Accessed April 24, 2024)
Created October 1, 2002, Updated February 17, 2017