Skip to main content
U.S. flag

An official website of the United States government

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.

Chapter 20, Thermophysical Properties of Refrigerants, ASHRAE Handbook--Fundamentals (2005 revision)

Published

Author(s)

Mark O. McLinden

Abstract

This chapter presents data for the thermodynamic and transport properties of refrigerants. The refrigerants have a full-page thermodynamic property chart on pressure-enthalpy coordinates with tabular data for the saturated liquid and vapor on the facing page. The properties tabulated are temperature, vapor pressure, liquid density, vapor volume, surface tension, and the liquid and vapor values of the enthalpy, entropy, specific heat at constant pressure, velocity of sound, viscosity, and thermal conductivity. For each of the cryogenic fluids, a second table of properties is provided for the vapor at a pressure of one standard atmosphere. This is a revision to the 2001 edition of the ASHRAE Handbook. Revised tables have been prepared for R23, R32, R124, R125, R152a, R245fa, R404A, R407C, R410A, R507A, propane, butane, isobutane, propylene, nitrogen, air, oxygen, and argon. Retained from the 2001 edition are the tables for R12, R22, R123, R134a, R143a, ammonia, steam, carbon dioxide, methane, ethane, ethylene, hydrogen, parahydrogen, and helium. In addition, revised pressure-enthalpy diagrams have been prepared for R12, R22, R23, R32, R123, R124, R125, R134a, R143a, R152a, R245fa, R404A, R407C, R410A, R507A, ammonia, steam, carbon dioxide, methane, ethane, propane, butane, isobutane, ethylene, propylene, nitrogen, air, oxygen, and argon. The previous diagrams are retained for hydrogen, parahydrogen, and helium. Separate tables and diagrams have been prepared for SI and I-P (inch-pound) units. All values have been calculated using the NIST REFPROP program.
Citation
ASHRAE Handbook of Fundamentals
Publisher Info
,

Keywords

hydrocarbons, cyrogens, hydrochlorofluorocarbons, hydrofluorocarbons, refrigerant, thermodynamic properties, transport properties

Citation

McLinden, M. (2005), Chapter 20, Thermophysical Properties of Refrigerants, ASHRAE Handbook--Fundamentals (2005 revision), , (Accessed July 22, 2024)

Issues

If you have any questions about this publication or are having problems accessing it, please contact reflib@nist.gov.

Created March 28, 2005, Updated February 17, 2017