# Generalized equation of state for refrigerants

## Abstract

A new four-parameter generalized equation of state with three reference fluids has been developed for predicting thermodynamic properties of the methane and ethane-series refrigerants. The four chosen characteristic parameters are critical temperature, critical pressure, acentric factor, and the polarity factor proposed in this work. The three selected reference fluids are argon, n-butane and 1,1-difluoroethane (R-152a). When the results of this work are compared with the refrigerant experimental data, they show significant improvement over Lee and Kesler (1975) and Wu and Stiel (1985). If the characteristic parameters of the refrigerants of interest are not available, an estimation method based on the group contribution method is given. The ideal vapor-compression refrigeration cycle was studied using the newly developed generalized equation of state to verify the accuracy of this work.

- Authors:

- Univ. of Michigan, Ann Arbor, MI (United States). Dept. of Mechanical Engineering and Applied Mechanics

- Publication Date:

- OSTI Identifier:
- 87374

- Report Number(s):
- CONF-950104-

TRN: IM9535%%5

- Resource Type:
- Conference

- Resource Relation:
- Conference: American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) winter meeting and exhibition, Chicago, IL (United States), 28 Jan - 1 Feb 1995; Other Information: PBD: 1995; Related Information: Is Part Of ASHRAE transactions 1995. Volume 101, Part 1; PB: 1517 p.

- Country of Publication:
- United States

- Language:
- English

- Subject:
- 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; 54 ENVIRONMENTAL SCIENCES; REFRIGERANTS; THERMODYNAMIC PROPERTIES; MATERIAL SUBSTITUTION; CHLOROFLUOROCARBONS; VAPOR COMPRESSION REFRIGERATION CYCLE

### Citation Formats

```
Kim, Y., Sonntag, R.E., and Borgnakke, C.
```*Generalized equation of state for refrigerants*. United States: N. p., 1995.
Web.

```
Kim, Y., Sonntag, R.E., & Borgnakke, C.
```*Generalized equation of state for refrigerants*. United States.

```
Kim, Y., Sonntag, R.E., and Borgnakke, C. Tue .
"Generalized equation of state for refrigerants". United States.
```

```
@article{osti_87374,
```

title = {Generalized equation of state for refrigerants},

author = {Kim, Y. and Sonntag, R.E. and Borgnakke, C.},

abstractNote = {A new four-parameter generalized equation of state with three reference fluids has been developed for predicting thermodynamic properties of the methane and ethane-series refrigerants. The four chosen characteristic parameters are critical temperature, critical pressure, acentric factor, and the polarity factor proposed in this work. The three selected reference fluids are argon, n-butane and 1,1-difluoroethane (R-152a). When the results of this work are compared with the refrigerant experimental data, they show significant improvement over Lee and Kesler (1975) and Wu and Stiel (1985). If the characteristic parameters of the refrigerants of interest are not available, an estimation method based on the group contribution method is given. The ideal vapor-compression refrigeration cycle was studied using the newly developed generalized equation of state to verify the accuracy of this work.},

doi = {},

journal = {},

number = ,

volume = ,

place = {United States},

year = {Tue Aug 01 00:00:00 EDT 1995},

month = {Tue Aug 01 00:00:00 EDT 1995}

}