NOTICE: Due to a lapse in annual appropriations, most of this website is not being updated. Learn more.
Form submissions will still be accepted but will not receive responses at this time. Sections of this site for programs using non-appropriated funds (such as NVLAP) or those that are excepted from the shutdown (such as CHIPS and NVD) will continue to be updated.
An official website of the United States government
Here’s how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Measurement and Correlation of the Thermal Conductivity of 2,3,3,3-Tetrafluoroprop-1-ene (R1234yf) and trans-1,3,3,3-tetrafluoropropene (R1234ze)
Published
Author(s)
Richard A. Perkins, Marcia L. Huber
Abstract
New experimental data on the thermal conductivity of 2,3,3,3-Tetrafluoroprop-1-ene (R1234yf) and trans-1,3,3,3-tetrafluoropropene (R1234ze) are reported that allow the development of wide-range correlations. These new experimental data, covering a temperature range of 242 K to 344 K for R1234yf, and 203 K to 344 K for R1234ze at a pressure range of 0.1 MPa to 23 MPa, are used to develop correlations for the thermal conductivity. The experimental data reported here have an uncertainty of less than 1 % for measurements removed from the critical point and for gas at pressures above 1 MPa, increasing to 3 % for gas at low pressures (less than 1 MPa). Based on the uncertainty of and comparisons with the present data, the thermal-conductivity correlation for R1234yf is estimated to have a relative uncertainty of about 2 % at a 95 % confidence level, and the thermal-conductivity correlation for R1234ze is estimated to have a relative uncertainty of about 1 % at a 95 % confidence level for the liquid phase, and 3 % for the vapor phase at pressures less than 1 MPa.
Perkins, R.
and Huber, M.
(2011),
Measurement and Correlation of the Thermal Conductivity of 2,3,3,3-Tetrafluoroprop-1-ene (R1234yf) and trans-1,3,3,3-tetrafluoropropene (R1234ze), Journal of Chemical and Engineering Data, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=907396
(Accessed October 9, 2025)