| Project/Area Number |
03650194
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| Research Category |
Grant-in-Aid for General Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Research Field |
Thermal engineering
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| Research Institution | Kanagawa Institute of Technology |
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Principal Investigator |
OGUCHI Kosei Kanagawa Institute of Technology, Faculty of Engineering, Professor, 工学部, 教授 (50051602)
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| Co-Investigator(Kenkyū-buntansha) |
TAKAISHI Yoshinori Kanagawa Institute of TEchnology, Faculty of Engineering, Associate Professor, 工学部, 助教授 (70159250)
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| Project Period (FY) |
1991 – 1993
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| Project Status |
Completed (Fiscal Year 1993)
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| Budget Amount *help |
¥2,200,000 (Direct Cost: ¥2,200,000)
Fiscal Year 1993: ¥200,000 (Direct Cost: ¥200,000)
Fiscal Year 1992: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1991: ¥1,400,000 (Direct Cost: ¥1,400,000)
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| Keywords | Alternative Refrigerant / HCFC-123 / Thermodynamic Properties / Vapor Pressure / PVT Properties / Critical Point / Liquid-Vapor Coexisting Curve / HCFCー123 / 飽和隈界線 |
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| Research Abstract |
HCFC-123 (CHCl_2CF_3) has been expected to be one of the new environmentally acceptable CFC-11 alternative refrigerants and to be used for tirbo-refrigerators, effervescent agents of heat-insulating materials, and so on. The study of thermodynamic properties of HCFC-123 has been conducted experimentally and acalitically since 1991 for the present project. The 1994 produced amount of CFC-11 is regulated and reduced to 25% of 1993 amount, and is decided to be suspended in production until the beginning of 1996. A head investigator in cooperating with Dr.Takaishi has conducted the experimental studies, comparisons between the published data, correlation of equations as follows ;
(1) Forty six data points of the vapor pressures of HCFC-123 were exprimentally obtained in the range of temperatures from 243 K to 453 K and pressures from 0.007 MPa to 3.45 MPa with in the accuracies of 5 mK and 2.2kPa, respectively. And forty nine data points of PVT properties of HCFC-123 has been measured in the range of temperatures from 304 K to 493 K, pressures up to 16.4 MPa and densities up to 1446 kg/m^3 within the accuracies of 5 mK, 2.2 kPa and 0.01%, respectively.
(2) The critical constants were determined based on the vapor pressures and PVT properties along the liquid-vapor coexisting curve.
(3) The vapor pressure equaion was formulated in 1990 International Temperature Scale based on the present observed data and previously published data.
(4) The equation of state was correlated also in 1990 International Temperature Scale based on the present observed data and previously published data.
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