### 抄録

A fundamental equation of state is presented for cis-1,3,3,3- tetrafluoropropene (R-1234ze(Z)). The equation of state is expressed explicitly in the Helmholtz energy with independent variables of temperature and density. The equation of state is based on experimental data for the critical parameters, vapor pressures, densities of the liquid and vapor phases, and sound speeds in the vapor phase. All thermodynamic properties can be derived as derivatives of the Helmholtz energy. The equation is valid for temperatures from 273 K to 430 K and for pressures up to 6 MPa. The estimated uncertainties of properties calculated from the equation are 0.15% in vapor pressures, 0.4% in vapor densities, 0.2% in liquid densities, and 0.05% in the vapor phase sound speeds. The equation exhibits reasonable extrapolation behavior in regions away from the experimental data.

元の言語 | 英語 |
---|---|

ページ（範囲） | 168-176 |

ページ数 | 9 |

ジャーナル | International Journal of Refrigeration |

巻 | 44 |

DOI | |

出版物ステータス | 出版済み - 1 1 2014 |

### Fingerprint

### All Science Journal Classification (ASJC) codes

- Building and Construction
- Mechanical Engineering

### これを引用

*International Journal of Refrigeration*,

*44*, 168-176. https://doi.org/10.1016/j.ijrefrig.2013.12.018

**A fundamental equation of state for cis-1,3,3,3-tetrafluoropropene (R-1234ze(Z)).** / Akasaka, Ryo; Higashi, Yukihiro; Miyara, Akio; Koyama, Shigeru.

研究成果: ジャーナルへの寄稿 › 記事

*International Journal of Refrigeration*, 巻. 44, pp. 168-176. https://doi.org/10.1016/j.ijrefrig.2013.12.018

}

TY - JOUR

T1 - A fundamental equation of state for cis-1,3,3,3-tetrafluoropropene (R-1234ze(Z))

AU - Akasaka, Ryo

AU - Higashi, Yukihiro

AU - Miyara, Akio

AU - Koyama, Shigeru

PY - 2014/1/1

Y1 - 2014/1/1

N2 - A fundamental equation of state is presented for cis-1,3,3,3- tetrafluoropropene (R-1234ze(Z)). The equation of state is expressed explicitly in the Helmholtz energy with independent variables of temperature and density. The equation of state is based on experimental data for the critical parameters, vapor pressures, densities of the liquid and vapor phases, and sound speeds in the vapor phase. All thermodynamic properties can be derived as derivatives of the Helmholtz energy. The equation is valid for temperatures from 273 K to 430 K and for pressures up to 6 MPa. The estimated uncertainties of properties calculated from the equation are 0.15% in vapor pressures, 0.4% in vapor densities, 0.2% in liquid densities, and 0.05% in the vapor phase sound speeds. The equation exhibits reasonable extrapolation behavior in regions away from the experimental data.

AB - A fundamental equation of state is presented for cis-1,3,3,3- tetrafluoropropene (R-1234ze(Z)). The equation of state is expressed explicitly in the Helmholtz energy with independent variables of temperature and density. The equation of state is based on experimental data for the critical parameters, vapor pressures, densities of the liquid and vapor phases, and sound speeds in the vapor phase. All thermodynamic properties can be derived as derivatives of the Helmholtz energy. The equation is valid for temperatures from 273 K to 430 K and for pressures up to 6 MPa. The estimated uncertainties of properties calculated from the equation are 0.15% in vapor pressures, 0.4% in vapor densities, 0.2% in liquid densities, and 0.05% in the vapor phase sound speeds. The equation exhibits reasonable extrapolation behavior in regions away from the experimental data.

UR - http://www.scopus.com/inward/record.url?scp=84904540239&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84904540239&partnerID=8YFLogxK

U2 - 10.1016/j.ijrefrig.2013.12.018

DO - 10.1016/j.ijrefrig.2013.12.018

M3 - Article

AN - SCOPUS:84904540239

VL - 44

SP - 168

EP - 176

JO - International Journal of Refrigeration

JF - International Journal of Refrigeration

SN - 0140-7007

ER -