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PHYSICAL PROPERTIES OF FLUORINATED PROPANE AND BUTANE DERIVATIVES AS ALTERNATIVE REFRIGERANTS
Citation:
Beyerlein, A. L., D. D. DesMarteau, S. H. Hwang, N D. Smith*, AND P. A. Joyner. PHYSICAL PROPERTIES OF FLUORINATED PROPANE AND BUTANE DERIVATIVES AS ALTERNATIVE REFRIGERANTS. ASHRAE TRANSACTIONS. American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc, Atlanta, GA, 99(Part 1):3658-3669, (1993).
Impact/Purpose:
Published Journal Article
Description:
Physical property measurements are presented for 24 fluorinated propane and butane derivatives and one fluorinated ether. These measurements include melting point, boiling point, vapor pressure below the boiling point, heat of vaporization at the boiling point, critical properties (temperature and density), and liquid-phase heat capacities at 40 C (104 F). Measured vapor pressures are obtained up to the critical temperature for four of the compounds: HFC-227ea, HFC-245cb, HFC-236ea, and HFE-125a. These measured data, combined with estimated vapor-phase densities, heat capacities, and vapor pressures, may be used to evaluate the chemicals as alternative refrigerants. Modified corresponding states methods, using HFC-134a as a reference fluid, are presented as a means of obtaining the needed estimated data, and the accuracy of these methods is judged by comparisons with measured data.