Science Inventory

THERMODYNAMIC PROPERTIES OF SELECTED HFC REFRIGERANTS

Citation:

Smith*, N D. AND M. W. Tufts. THERMODYNAMIC PROPERTIES OF SELECTED HFC REFRIGERANTS. INTERNATIONAL JOURNAL OF HEATING, VENTILATING, AIR CONDITIONING, & REFRIGERATING RESEARCH 2(3):257-261, (1996).

Impact/Purpose:

Journal Article

Description:

Hydrofluorocarbon (HFC) refrigerants are possible alternatives to replace ozone-depleting chlorofluorocarbon and hydrochlorofluorocarbon (HCFC) refrigerants. The flammability of a proposed new refrigerant is a major consideration in assessing its utility for a particular application. Enthalpy (or heat) of combustion is one of the important parameters in assessing the flammability of a proposed new refrigerant. The American Society of Heating, Refrigerating and Air-Conditioning Engineers considers the enthalpy of combustion together with the lower flammability limit in classifying refrigerants as nonflammable, moderately flammable, or highly flammable. Also, combustion enthalpy is employed in the calculation of adiabatic flame temperatures and theoretically correlates with flammability limits. A related thermodynamic property, the Gibbs free energy of combustion, is a measure of the chemical force which drives the combustion reaction to equilibrium at constant temperature and pressure.

URLs/Downloads:

THERMODYNAMIC PROPERTIES OF SELECTED HFC REFRIGERANTS   (PDF,NA pp, 1077 KB,  about PDF)

Record Details:

Record Type: DOCUMENT (JOURNAL/PEER REVIEWED JOURNAL)
Product Published Date: 07/01/1996
Record Last Revised: 04/22/2009
OMB Category: Other
Record ID: 90553

Organization:

U.S. ENVIRONMENTAL PROTECTION AGENCY

OFFICE OF RESEARCH AND DEVELOPMENT

NATIONAL RISK MANAGEMENT RESEARCH LABORATORY

AIR POLLUTION PREVENTION AND CONTROL DIVISION