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An improved fundamental equation of state for HFC134a.
Author(s) : TILLNER-ROTH R., BAEHR H. D.
Summary
A new equation of state expressing Helmholtz free energy, as a function of lowered temperatures and densities was applied to R134a. Parameters were calculated using the numerous measurements, published in recent years. Using the new equation of state, experimental data can be correlated with remarkable accuracy: within 0.05% for saturated vapour pressure; 0.1% for positive-displacement properties in liquid, gas or saturated phases, except near the critical point; and 1 to 2% for calorimetric properties.
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Details
- Original title: An improved fundamental equation of state for HFC134a.
- Record ID : 1994-0063
- Languages: English
- Source: Energy Efficiency in Refrigeration and Global Warming Impact.
- Publication date: 1993/05/12
- Document available for consultation in the library of the IIR headquarters only.
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Indexing
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Themes:
Thermodynamics and changes of state;
HFCs - Keywords: Thermodynamics; R134a; Equation of state; Refrigerant
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Equation of state and thermophysical properties...
- Author(s) : DOBROKHOTOV A. V., GREBENKOV A. G., USTJUSHANIN E. E., ALTUNIN V. V., DZELEZNY V. P., MASLENNIKOV A. V., TSWETKOV O. B.
- Date : 1993/05/12
- Languages : English
- Source: Energy Efficiency in Refrigeration and Global Warming Impact.
- Formats : PDF
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- Author(s) : AKASAKA R., TANAKA K., HIGASHI Y.
- Date : 2010/06/13
- Languages : English
- Source: IIR/Eurotherm sustainable refrigeration and heat pump technology conference. Proceedings of the Eurotherm Seminar No. 88, Stockholm, Sweden, June 13-16, 2010.
- Formats : PDF
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Critical review of the latest thermodynamic and...
- Author(s) : BROWN J. S., ZILIO C., CAVALLINI A.
- Date : 2010/07/12
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- Source: 2010 Purdue Conferences. 13th International Refrigeration and Air-Conditioning Conference at Purdue.
- Formats : PDF
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