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Investigation of Vapor-liquid Ejector with Organic Working Fluids

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Abstract

The vapor-liquid ejector is a simply flow device and driven by thermal energy. In this paper, a modified mathematical model of the vapor-liquid ejector is proposed, and the validation shows good agreements with the experimental data. A study is carried out with six organic working fluids, namely R1233zd(E), R1336mzz(Z), R236ea, R245ca, R245fa and R365mfc. The influences of the entrainment ratio, the area ratio, the superheating at the vapor nozzle inlet, the subcooling at the liquid nozzle inlet, and the pressures at these inlets on the pressure lifting are parametrically investigated. An increase in the subcooling leads to the great increasing of pressure lifting and the superheating has slight effect on the pressure lifting, whereas others have the opposite tendency. The studies of the pressures and temperatures at the typical locations inside the vapor-liquid ejector are further conducted by using R1336mzz(Z). The results show that the above parameters have great influence on these pressures and temperatures inside except that the pressures are insignificantly impacted by the superheating, and the temperatures are negligibly affected by the area ratio. R1336mzz(Z) is recommended as a good working fluid for the vapor-liquid ejector.

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Acknowledgement

This study is supported by the National Natural Science Foundation of China (51706047), Guangdong Special Funding for Applied Technology R&D (2016B020243010) and Foshan Science & Technology Innovation Project (2016AG101232). Authors also want to thankfully acknowledge Chemours Company to provide the thermodynamic properties of R1336mzz(Z).

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Authors and Affiliations

  1. School of Material and Energy, Guangdong University of Technology, Guangzhou, 510006, China

    Jianyong Chen, Yisheng Huang, Zhiting Niu, Xianglong Luo, Ying Chen & Zhi Yang

  2. Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter, Guangzhou, 510006, China

    Jianyong Chen, Xianglong Luo, Ying Chen & Zhi Yang

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  1. Jianyong Chen
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  2. Yisheng Huang
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  3. Zhiting Niu
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  4. Xianglong Luo
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  5. Ying Chen
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  6. Zhi Yang
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Correspondence to Xianglong Luo.

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Chen, J., Huang, Y., Niu, Z. et al. Investigation of Vapor-liquid Ejector with Organic Working Fluids. J. Therm. Sci. 28, 61–71 (2019). https://doi.org/10.1007/s11630-018-1031-2

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  • DOI: https://doi.org/10.1007/s11630-018-1031-2

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