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Theoretical analysis of ejector refrigeration system performance under overall modes

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  • Chen, Weixiong
  • Shi, Chaoyin
  • Zhang, Shuangping
  • Chen, Huiqiang
  • Chong, Daotong
  • Yan, Junjie

Abstract

The ejector refrigeration integrated in the air-conditioning system is a promising technology, because it could be driven by the low grade energy. In the present study, a theoretical calculation based on the real gas property is put forward to estimate the ejector refrigeration system performance under overall modes (critical/sub-critical modes). The experimental data from literature are applied to validate the proposed model. The findings show that the proposed model has higher accuracy compared to the model using the ideal gas law, especially when the ejector operates at sub-critical mode. Then, the performances of the ejector refrigeration circle using different refrigerants are analyzed. R290 and R134a are selected as typical refrigerants by considering the aspects of COP, environmental impact, safety and economy. Finally, the ejector refrigeration performance is investigated under variable operation conditions with R290 and R134a as refrigerants. The results show that the R290 ejector circle has higher COP under critical mode and could operate at low evaporator temperature. However, the performance would decrease rapidly at high condenser temperature. The performance of R134a ejector circle is the opposite, with relatively lower COP, and higher COP at high condenser temperature compared to R290.

Suggested Citation

  • Chen, Weixiong & Shi, Chaoyin & Zhang, Shuangping & Chen, Huiqiang & Chong, Daotong & Yan, Junjie, 2017. "Theoretical analysis of ejector refrigeration system performance under overall modes," Applied Energy, Elsevier, vol. 185(P2), pages 2074-2084.
    • Handle: RePEc:eee:appene:v:185:y:2017:i:p2:p:2074-2084
    DOI: 10.1016/j.apenergy.2016.01.103
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    References listed on IDEAS

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    2. Peris Pérez, Bernardo & Ávila Gutiérrez, Miguel & Expósito Carrillo, José Antonio & Salmerón Lissén, José Manuel, 2022. "Performance of Solar-driven Ejector Refrigeration System (SERS) as pre-cooling system for air handling units in warm climates," Energy, Elsevier, vol. 238(PA).
    3. Lamberts, Olivier & Chatelain, Philippe & Bourgeois, Nicolas & Bartosiewicz, Yann, 2018. "The compound-choking theory as an explanation of the entrainment limitation in supersonic ejectors," Energy, Elsevier, vol. 158(C), pages 524-536.
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    6. Jeon, Yongseok & Kim, Sunjae & Kim, Dongwoo & Chung, Hyun Joon & Kim, Yongchan, 2017. "Performance characteristics of an R600a household refrigeration cycle with a modified two-phase ejector for various ejector geometries and operating conditions," Applied Energy, Elsevier, vol. 205(C), pages 1059-1067.
    7. Sun, Fangtian & Chen, Xu & Fu, Lin & Zhang, Shigang, 2018. "Configuration optimization of an enhanced ejector heat exchanger based on an ejector refrigerator and a plate heat exchanger," Energy, Elsevier, vol. 164(C), pages 408-417.
    8. Croquer, Sergio & Fang, Yu & Metsue, Antoine & Bartosiewicz, Yann & Poncet, Sébastien, 2021. "Compound-choking theory for supersonic ejectors working with real gas," Energy, Elsevier, vol. 227(C).
    9. Fenglei Li & Zhao Chang & Qi Tian & Changzhi Wu & Xiangyu Wang, 2017. "Performance Predictions of Dry and Wet Vapors Ejectors Over Entire Operational Range," Energies, MDPI, vol. 10(7), pages 1-26, July.
    10. Najjaran, Ahmad & Freeman, James & Ramos, Alba & Markides, Christos N., 2019. "Experimental investigation of an ammonia-water-hydrogen diffusion absorption refrigerator," Applied Energy, Elsevier, vol. 256(C).
    11. Bi, Rongshan & Chen, Chen & Li, Jiansong & Tan, Xinshun & Xiang, Shuguang, 2018. "Research on the CFD numerical simulation of flash boiling atomization," Energy, Elsevier, vol. 165(PA), pages 768-781.
    12. Wang, Kai & Wang, Lei & Gao, Rui, 2023. "An extended mechanism model of gaseous ejectors," Energy, Elsevier, vol. 264(C).
    13. Chen, Jianyong & Li, Yunhai & Chen, Weixiong & Luo, Xianglong & Chen, Ying & Yang, Zhi & Eames, Ian W., 2018. "Investigation of the ejector nozzle in refrigeration system," Energy, Elsevier, vol. 157(C), pages 571-587.
    14. Jeon, Yongseok & Jung, Jongho & Kim, Dongwoo & Kim, Sunjae & Kim, Yongchan, 2017. "Effects of ejector geometries on performance of ejector-expansion R410A air conditioner considering cooling seasonal performance factor," Applied Energy, Elsevier, vol. 205(C), pages 761-768.
    15. Fan, Gang & Li, Hang & Du, Yang & Zheng, Shaoxiong & Chen, Kang & Dai, Yiping, 2020. "Preliminary conceptual design and thermo-economic analysis of a combined cooling, heating and power system based on supercritical carbon dioxide cycle," Energy, Elsevier, vol. 203(C).
    16. Jeon, Yongseok & Kim, Sunjae & Lee, Sang Hun & Chung, Hyun Joon & Kim, Yongchan, 2020. "Seasonal energy performance characteristics of novel ejector-expansion air conditioners with low-GWP refrigerants," Applied Energy, Elsevier, vol. 278(C).
    17. Anas F A Elbarghthi & Saleh Mohamed & Van Vu Nguyen & Vaclav Dvorak, 2020. "CFD Based Design for Ejector Cooling System Using HFOS (1234ze(E) and 1234yf)," Energies, MDPI, vol. 13(6), pages 1-19, March.
    18. Bourhan Tashtoush & Iscah Songa & Tatiana Morosuk, 2022. "Exergoeconomic Analysis of a Variable Area Solar Ejector Refrigeration System under Hot Climatic Conditions," Energies, MDPI, vol. 15(24), pages 1-19, December.
    19. Valerie Eveloy & Yusra Alkendi, 2021. "Thermodynamic Performance Investigation of a Small-Scale Solar Compression-Assisted Multi-Ejector Indoor Air Conditioning System for Hot Climate Conditions," Energies, MDPI, vol. 14(14), pages 1-31, July.
    20. Metsue, Antoine & Debroeyer, Romain & Poncet, Sébastien & Bartosiewicz, Yann, 2022. "An improved thermodynamic model for supersonic real-gas ejectors using the compound-choking theory," Energy, Elsevier, vol. 238(PB).
    21. Yongseok Jeon & Hoon Kim & Jae Hwan Ahn & Sanghoon Kim, 2020. "Effects of Nozzle Exit Position on Condenser Outlet Split Ejector-Based R600a Household Refrigeration Cycle," Energies, MDPI, vol. 13(19), pages 1-12, October.
    22. Tashtoush, Bourhan M. & Al-Nimr, Moh'd A. & Khasawneh, Mohammad A., 2019. "A comprehensive review of ejector design, performance, and applications," Applied Energy, Elsevier, vol. 240(C), pages 138-172.
    23. Ll Macia & R. Castilla & P. J. Gamez-Montero & S. Camacho & E. Codina, 2019. "Numerical Simulation of a Supersonic Ejector for Vacuum Generation with Explicit and Implicit Solver in Openfoam," Energies, MDPI, vol. 12(18), pages 1-17, September.
    24. Tashtoush, Bourhan M. & Al-Nimr, Moh'd A. & Khasawneh, Mohammad A., 2017. "Investigation of the use of nano-refrigerants to enhance the performance of an ejector refrigeration system," Applied Energy, Elsevier, vol. 206(C), pages 1446-1463.

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