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A Study of Thermodynamic Properties of Next Generation Mixture Refrigerants Including Hydrocarbons

Research Project

Project/Area Number 12450090
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Thermal engineering
Research InstitutionKeio University

Principal Investigator

WATANABE Koichi  Keio Univ., Fac. Of Sci. & Tech., Professor, 理工学部, 教授 (40051487)

Co-Investigator(Kenkyū-buntansha) WIDIATMO Januarius V.  Keio Univ., Fac. Of Sci. & Tech., Assist. Professor, 理工学部, 助手 (90306879)
WIDIATMO Januarius V.  慶應義塾大学, 理工学部, 専任講師
Project Period (FY) 2000 – 2001
Project Status Completed (Fiscal Year 2001)
Budget Amount *help
¥14,900,000 (Direct Cost: ¥14,900,000)
Fiscal Year 2001: ¥3,200,000 (Direct Cost: ¥3,200,000)
Fiscal Year 2000: ¥11,700,000 (Direct Cost: ¥11,700,000)
KeywordsEnvironmentally Friendly Refrigerant / Natural Refrigerant / Hydrocarbon / Alternative Refrigerant / PVTx Property / Vapor Pressure / Thermodynamic Property / Equation of State
Research Abstract

A series of precise measurements of vapor pressures and gas-phase PVT properties of isobutene (R-600a), a hydrocarbon refrigerant, being an important component of the next generation mixture refrigerants with low environmental impact have been conducted by means of the improved Burnett apparatus, since reliable thermodynamic property information about this substance were not available. Sixteen vapor pressure data at temperatures 300-370 K have been obtained, while 48 gas-phase PVT data at 300-380 K. In addition, 9 vapor-pressure data at temperatures down to 260 K were recently obtained, whereas the measurement of temperature dependence of the cell constant of this apparatus is in progress.
A density-measuring system with an aid of the vibrating-tube densimeter was newly designed and constructed, and it was then confirmed that the measurement system could provide us a satisfactory performance with rapid and precise measurements as expected. Measurements for pure water, methanol and 3 dif … More ferent MFC alternative refrigerants such as R-134a, R-125 and R-143a have been completed throughout the present research project. Additionally, similar precise density measurements have been carried out for compressed-liquid phases of HFE-245mc and HFE-143m, promising alternative candidates recently developed as next generation refrigerants, as well as for those or natural hydrocarbon refrigerants including propane (R-290) and R-600a.
Concerning the analytical studies, on the other hand, a series of thermodynamic properly model with the Helmholtz-energy type equation of state which is effective for the entire fluid phase of typical natural refrigerants including R-290, R-600a and n-butane (R-600), have been developed with a universal functional form. These models developed have been published in one of the leading international journals. A significant success has also been confirmed in developing the mixing rule which does play an important role to formulate the thermodynamic property models for hydrocarbon (HC) mixtures so as to lead to those for the HC + HFC refrigerant mixtures.
It should be noted that the thermodynamic property models developed by the present study for 3 HCs mentioned above have been accepted with international qualification for their forthcoming inclusion to the next version of the REFPROP, a thermodynamic property package developed by the U.S. National Institute of Standards and Technology (NIST) and being widely used on the international basis. Less

Report

(3 results)
  • 2001 Annual Research Report   Final Research Report Summary
  • 2000 Annual Research Report
  • Research Products

    (16 results)

All Other

All Publications (16 results)

  • [Publications] Miyamoto, H., Watanabe, K.: "A Thermodynamic Property Model for Fluid-Phase Propane"International Journal of Thermophysics. 21・5. 1045-1072 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Miyamoto, H., Watanabe, K.: "A Thermodynamic Equation of State for Fluid-Phase n-Butane"International Journal of Thermophysics. 22・2. 459-475 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Miyamoto, H., Watanabe, K.: "A Thermodynamic Equation of State for Fluid-Phase iso-Butane"to appear in the International Journal of Thermophysics. 23・2(In Press). (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Kayukawa, Y., Watanabe, K.: "PpTx Measurements for Gas-Phase Pentafluoroethane + Propane Mixtures by the Burnett Method"to appear in the Journal of Chemical and Engineering Data. 46・5. 1025-1030 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] 粥川洋平, 本堂尚, 渡部康一: "ドロップ・イン冷媒R-SP34Eに関する熱力学性質"日本冷凍空調学会論文集. 18・3. 279-288 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Miyamoto, H. and Watanabe, K.: "A Thermodynamic Property Model for Fluid-Phase Propane"Int. J. Thermophys.. 21-5. 1045-1072 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Miyamoto, H. and Watanabe, K.: "A Thermodynamic Property Model for Fluid-Phase n-Buntane"Int. J. Thermophys.. 22-2. 459-475 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Miyamoto, H and Watanabe, K.: "A Thermodynamic Property Model for Fluid-Phase iso-Butane"Int. J. Thermophys.. 23-2 (to appear). (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Kayukawa, Y. and Watanabe, K.: "PρTx Measurements for Gas-Phase Pentafluoroethane + Propane Mixture"J. Chem. Eng. Data. 46-5. 1025-1030 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Kayukawa, Y, Hondo, T. and Watanabe, K.: "Thermodynamic Properties for a Dro-in Refrigerant R-SP34E"Trans. JSRAE. 18-3. 279-288 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Miyamoto, H., Watanabe, K.: "A Thermodynamic Equation of State for n-Butane"International Journal of Thermophysics. 22・2. 459-475 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Kayukawa, Y., Watanabe, K.: "Pp Tx Measurements for Gas-Phase Pentafluoroethane + Propane Mixtures by the Burnett Method"Journal of Chemical and Engineering Data. 46・5. 1025-1030 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Miyamoto, H., Watanabe, K.: "A Thermodynamic Property Model for Fluid-Phase Isobutane"International Journal of Thermophysics. 23・2. 477-499 (2002)

    • Related Report
      2001 Annual Research Report
  • [Publications] Miyamoto,H.,Watanabe,K.: "A Thermodynamic Property Model for Fluid-Phase Propane"International Journal of Thermophysics. 21・5. 1045-1072 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Miyamoto,H.,Watanabe,K.: "A Thermodynamic Equation of State for n-Butane"to appear in the International Journal of Thermophysics. (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] Kayukawa,Y.,Watanabe,K.: "PρTx Measurements for Gas-Phase Pentafluoroethane+Propane Mixtures by the Burnett Method"to appear in the Journal of Chemical and Engineering Data. (2001)

    • Related Report
      2000 Annual Research Report

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Published: 2000-04-01   Modified: 2021-04-07  

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