Development of Equations of State for Next-generation Refrigerants Using a Multi-fluid Optimization

• Project/Area Number: 15K05849
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Thermal engineering
• Research Institution: Kyushu Sangyo University
• Principal Investigator: Akasaka Ryo 九州産業大学, 理工学部, 教授 (60369121)
• Co-Investigator(Kenkyū-buntansha): 東 之弘 九州大学, カーボンニュートラル・エネルギー国際研究所, 教授 (90183095)
• Research Collaborator: McLinden Mark O. 米国標準技術研究所(NIST) ; Lemmon Eric W. 米国標準技術研究所(NIST)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000); Fiscal Year 2017: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2016: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2015: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
• Keywords: 状態方程式 / 冷媒 / 飽和蒸気圧 / 密度 / 音速 / 熱力学的性質

Outline of Final Research Achievements

In this work, we established a generalized functional form of the Helmholtz energy equations of state using a multi-fluid optimization. This functional form was applied to several HFO refrigerants, R-1123，R1224yd(Z)，R-1234ze(Z)，R-1243zf, and R-1336mzz(Z), and accurate equations of state for these refrigerants were obtained. The equations represent experimental data including vapor pressures, densities, and sound speeds within their uncertainties. In addition, the equations exhibit physically correct behavior over wide ranges of temperature and pressure. All equations will be available in the REFPROP version 10.

Research Products

• [Int'l Joint Research] NIST/The Catholic University of America(米国)
• [Int'l Joint Research] ルール大学ボーフム/TU Braunschweig(ドイツ)
• [Int'l Joint Research] パドヴァ大学/The Consiglio Nazionale delle Ricerche(イタリア)
• [Int'l Joint Research] 西安交通大学(中国)
• [Int'l Joint Research] 米国国立標準技術研究所（NIST)(米国)
• [Journal Article] Measurements of Saturation Pressures for Trifluoroethene (R1123) and 3,3,3-trifluoropropene (R1243zf) (2018)
  • Author(s): Y. Higashi, N. Sakoda, Md. Amirul Islam, Y. Takata, S. Koyama, R. Akasaka
  • Journal Title: Journal of Chemical and Engineering Data Volume: 63(2) Issue: 2 Pages: 417-421
  • DOI: 10.1021/acs.jced.7b00818
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] The precise measurement of vapor-liquid equilibrium properties of the CO2/isopentane binary mixture, and fitted parameters for a Helmholtz energy mixture model (2017)
  • Author(s): H. Miyamoto, Y. Shoji, R. Akasaka, E. W. Lemmon
  • Journal Title: International Journal of Thermophysics Volume: 38 Issue: 10 Pages: 157-166
  • DOI: 10.1007/s10765-017-2283-x
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Measurements of the Critical Parameters for Cis-1,1,1,4,4,4-hexafluoro-butene (HFO-1336mzz(Z)) (2017)
  • Author(s): K. Tanaka, R. Akasaka, E. Sakaue, J. Ishikawa, K. Kontomaris
  • Journal Title: Journal of Chemical and Engineering Data Volume: 62(3) Issue: 3 Pages: 1135-1138
  • DOI: 10.1021/acs.jced.6b00990
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Recent Trends in the Development of Helmholtz Energy Equations of State and Their Application to 3,3,3-Trifluoroprop-1-ene (R-1243zf) (2016)
  • Author(s): R. Akasaka
  • Journal Title: Science and Technology for the Built Environment Volume: 22(8) Issue: 8 Pages: 1136-1144
  • DOI: 10.1080/23744731.2016.1208000
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Thermodynamic Properties of Cis-1,1,1,4,4,4-hexafluoro-butene (HFO-1336mzz(Z)): Measurements of the pρT Property and Determinations of Vapor Pressures, Saturated Liquid and Vapor Densities, and Critical Parameters (2016)
  • Author(s): K. Tanaka, R. Akasaka, E. Sakaue, J. Ishikawa, K. Kontomaris
  • Journal Title: Journal of Chemical and Engineering Data Volume: 61(7) Issue: 7 Pages: 2467-2473
  • DOI: 10.1021/acs.jced.6b00169
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] ２成分系混合作動流体R245fa+R134a系の熱力学的性質の測定 -第2報：PρTx性質および臨界圧力の測定- (2016)
  • Author(s): 東之弘,赤坂亮
  • Journal Title: 日本冷凍空調学会論文集 Volume: 33(1) Pages: 81-91
  • NAID: 130005519721
  • Peer Reviewed / Acknowledgement Compliant
• [Presentation] A Helmholtz Energy Equation of State for Cis-1-chloro-2,3,3,3-tetrafluoropropene (R-1224yd(Z)) (2017)
  • Author(s): R. Akasaka, M. Fukushima, E. W. Lemmon
  • Organizer: 21th European Conference on Thermophysical Properties
  • Int'l Joint Research
• [Presentation] R-1234ze(Z)の新しいHelmholtz 型状態方程式 (2017)
  • Author(s): 赤坂亮
  • Organizer: 2017年度日本冷凍空調学会年次大会
• [Presentation] A Thermodynamic Property Model for Difluoromethane (R-32) and Trifluoroethylene (R-1123) Mixtures (2016)
  • Author(s): R. Akasaka
  • Organizer: 11th Asian Thermophysical Properties Conference
  • Place of Presentation: Yokohama
  • Year and Date: 2016-10-02
  • Int'l Joint Research
• [Presentation] A Helmholtz Energy Equation of State for Trifluoroethylene (R-1123) (2016)
  • Author(s): R. Akasaka, M. Fukushima, E. W. Lemmon
  • Organizer: 16th International Refrigeration and Air Conditioning Conference at Purdue
  • Place of Presentation: West Lafayette
  • Year and Date: 2016-07-11
  • Int'l Joint Research
• [Presentation] A Helmholtz Energy Equation of State for Cis-1,1,1,4,4,4-hexafluoro-2-butene (R-1336mzz(Z)) (2016)
  • Author(s): R. Akasaka, E. W. Lemmon
  • Organizer: 8th Asian Conference on Refrigeration and Air Conditioning
  • Place of Presentation: Taipei
  • Year and Date: 2016-05-15
  • Int'l Joint Research
• [Presentation] R-1243zf の熱力学的性質 －低 GWP 冷媒の状態方程式開発における国際協調－ (2015)
  • Author(s): 赤坂亮
  • Organizer: 2015年度日本冷凍空調学会年次大会
  • Place of Presentation: 早稲田大学（東京都）
  • Year and Date: 2015-10-20
• [Presentation] A Preliminary Equation of State for 3,3,3-Trifluoroprop-1-ene (R-1243zf) (2015)
  • Author(s): R. Akasaka, Y. Higashi, A. Miyara, J. S. Brown, S. Koyama
  • Organizer: 19th Symposium on Thermophysical Properties
  • Place of Presentation: ボルダー（米国）
  • Year and Date: 2015-06-21
  • Int'l Joint Research