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Choosing the Most Suitable Working Fluid for a CTEC

Author

Listed:
  • Aliet Achkienasi

    (Instituto de Ingeniería, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico)

  • Rodolfo Silva

    (Instituto de Ingeniería, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico)

  • Edgar Mendoza

    (Instituto de Ingeniería, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico)

  • Luis D. Luna

    (Dipartimento di Ingegneria, Università Degli Studi Della Campania Luigi Vanvitelli, Viale Abramo Lincoln n. 5, 81100 Caserta, Italy)

Abstract

This study aims to explore additional fluids beneficial for coastal thermal energy converter (CTEC) operation. Ammonia’s thermodynamic properties, characterized by higher condensation temperatures and pressures, demand significantly elevated operating pressures, resulting in a substantial energy load for efficient operation. Thus, exploring alternatives such as R134a becomes crucial, particularly considering its potential as a better working fluid for power generation in a Rankine cycle. The research methodology involves employing computational fluid dynamics (CFD) simulations alongside experimental investigations to examine the performance of an axial turbine concept under different working fluids. The results obtained indicate that R134a is the most appropriate working fluid for an axial turbine within a CTEC, outperforming ammonia, thereby implying significantly better operational efficiency.

Suggested Citation

  • Aliet Achkienasi & Rodolfo Silva & Edgar Mendoza & Luis D. Luna, 2024. "Choosing the Most Suitable Working Fluid for a CTEC," Energies, MDPI, vol. 17(9), pages 1-21, May.
    • Handle: RePEc:gam:jeners:v:17:y:2024:i:9:p:2181-:d:1387825
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    References listed on IDEAS

    as
    1. Hsieh, Jui-Ching & Chen, Yen-Hsun & Hsieh, Yi-Chi, 2023. "Experimental study of an organic Rankine cycle with a variable-rotational-speed scroll expander at various heat source temperatures," Energy, Elsevier, vol. 270(C).
    2. Zhang, Chengbin & Wu, Zhe & Wang, Jiadian & Ding, Ce & Gao, Tieyu & Chen, Yongping, 2023. "Thermodynamic performance of a radial-inflow turbine for ocean thermal energy conversion using ammonia," Renewable Energy, Elsevier, vol. 202(C), pages 907-920.
    3. Ma, Qingfen & Gao, Zezhou & Huang, Jie & Mahian, Omid & Feng, Xin & Lu, Hui & Wang, Shenghui & Wang, Chengpeng & Tang, Rongnian & Li, Jingru, 2023. "Thermodynamic analysis and turbine design of a 100 kW OTEC-ORC with binary non-azeotropic working fluid," Energy, Elsevier, vol. 263(PE).
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