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Study of the Vapor-Liquid Coexistence Curve and the Critical Curve for Nonazeotropic Refrigerant Mixture R152a + R114 System
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- KABATA Yasuo
- Graduate School of Science and Technology, Keio University (3-14-1, Hiyoshi, Kohoku-ku, Yokohama 223)
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- HIGASHI Yukihiro
- Department of Mechanical Engineering, Iwaki Meisei University (5-5-1, Iino, Chuodai, Iwaki 970)
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- UEMATSU Masahiko
- Department of Mechanical Engineering, Keio University (3-14-1, Hiyoshi, Kohoku-ku, Yokohama 223)
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- WATANABE Koichi
- Department of Mechanical Engineering, Keio University (3-14-1, Hiyoshi, Kohoku-ku, Yokohama 223)
Bibliographic Information
- Other Title
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- 非共沸混合冷媒R152a+R114系の気液共存曲線および臨界軌跡に関する研究
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Description
Measurements of the vapor-liquid coexistence curve in the critical region for the refrigerant mixture of R152a (CH3CHF2: 1, l-difluoroethane) +R 114 (CCIF2CCIF2 :1, 2-dichloro-1, 1, 2, 2-tetrafluoroethane) system were made by visual observation of the disappearance of the meniscus at the vapor-liquid interface within an optical cell. Forty-eight saturated densities along the vapor-liquid coexistence curve between 204 and 861 kg·m-3 for five different compositions of 10, 20, 50, 80 and 90 wt% R 152a were obtained in the temperature range 370 to 409 K. The experimental errors of temperature, density, and mass fraction were estimated within ±10mK, ±0.5% and +0.05 %, respectively. On the basis of these measurements, the critical parameters of five different compositions for the R 152a +R 114 system were determined in consideration of the meniscus disappearance level as well as intensity of the critical opalescence. In accordance with the previous results of three other refrigerant mixtures, i.e., R 12 +R 22 system, R 22 +R 114 system and R 13B1 + R 114 system, the coexistence curve and critical curve on the temperature-density diagram for binary refrigerant mixtures were discussed. In addition, correlations of its composition dependence for this system were proposed.
Journal
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- Transactions of the Japan Society of Refrigerating and Air Conditioning Engineers
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Transactions of the Japan Society of Refrigerating and Air Conditioning Engineers 5 (1), 97-106, 1988
Japan Society of Refrigerating and Air Conditioning Engineers
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Details 詳細情報について
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- CRID
- 1390282679641644544
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- NII Article ID
- 130004566316
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- ISSN
- 2185789X
- 13444905
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- Text Lang
- ja
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- Data Source
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- JaLC
- CiNii Articles
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- Abstract License Flag
- Disallowed