IDEAS home Printed from https://ideas.repec.org/a/eee/appene/v231y2018icp468-480.html
   My bibliography  Save this article

Analysis of pressure drop in T-junction and its effect on thermodynamic cycle efficiency

Author

Listed:
  • Lu, Pei
  • Deng, Shuai
  • Zhao, Li
  • Shao, Yawei
  • Zhao, Dongpeng
  • Xu, Weicong
  • Zhang, Ying
  • Wang, Zhi

Abstract

The application of T-junction has already been extended from the petroleum engineering to the emerging advanced thermodynamic cycles. How a T-junction, as a separator in an emerging thermodynamic cycle, affects the cycle efficiency is discussed in this paper. Firstly, based on the Eulerian method, parametric studies on the local pressure drop coefficients are conducted and two new local pressure drop (LPD) coefficients are predicted in this paper. Then, the effects of pressure drop on a composition adjustable organic Rankine cycle efficiency is analyzed. In the process, a composition adjustable organic Rankine cycle with zeotropic mixtures R245fa/R123 is chosen to calculate the effects of pressure drop on thermodynamic cycle efficiency. The quality of the outlet of the evaporator is assumed as 0.7, and the composition ratio as 0.6/0.4. The results show that the pressure variation of T-junction affects the adjustable organic Rankine cycle efficiency, and reasonable phase separation ratio can improve the thermodynamic cycle efficiency. The pressure drop could cause composition diffusion. In addition, two new local pressure drop coefficients are obtained. And the results demonstrate that K12J declines slowly with the increases of density ratio (ρ2/ρ1) and decreases with the increases of mass fraction of taken off (F). K13J shows an obvious trend with diameter ratio (d3/d1) and F. This work could push the research of T-junction as a separator in the adjustable organic Rankine cycle.

Suggested Citation

  • Lu, Pei & Deng, Shuai & Zhao, Li & Shao, Yawei & Zhao, Dongpeng & Xu, Weicong & Zhang, Ying & Wang, Zhi, 2018. "Analysis of pressure drop in T-junction and its effect on thermodynamic cycle efficiency," Applied Energy, Elsevier, vol. 231(C), pages 468-480.
    • Handle: RePEc:eee:appene:v:231:y:2018:i:c:p:468-480
    DOI: 10.1016/j.apenergy.2018.09.134
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0306261918314429
    Download Restriction: Full text for ScienceDirect subscribers only
    File URL: https://libkey.io/10.1016/j.apenergy.2018.09.134?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    References listed on IDEAS

    as
    1. Xu, Weicong & Deng, Shuai & Su, Wen & Zhang, Ying & Zhao, Li & Yu, Zhixin, 2018. "How to approach Carnot cycle via zeotropic working fluid: Research methodology and case study," Energy, Elsevier, vol. 144(C), pages 576-586.
    2. Zhang, Ying & Deng, Shuai & Ni, Jiaxin & Zhao, Li & Yang, Xingyang & Li, Minxia, 2017. "A literature research on feasible application of mixed working fluid in flexible distributed energy system," Energy, Elsevier, vol. 137(C), pages 377-390.
    Full references (including those not matched with items on IDEAS)

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Lu, Pei & Zhao, Li & Zheng, Nan & Liu, Shengli & Li, Xiaobing & Zhou, Xing & Yan, Jingbo, 2022. "Progress and prospect of flow phenomena and simulation on two-phase separation in branching T-junctions: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 167(C).
    2. Xu, Weicong & Deng, Shuai & Zhao, Li & Zhang, Yue & Li, Shuangjun, 2019. "Performance analysis on novel thermodynamic cycle under the guidance of 3D construction method," Applied Energy, Elsevier, vol. 250(C), pages 478-492.

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Xu, Weicong & Zhao, Ruikai & Deng, Shuai & Zhao, Li & Mao, Samuel S., 2021. "Is zeotropic working fluid a promising option for organic Rankine cycle: A quantitative evaluation based on literature data," Renewable and Sustainable Energy Reviews, Elsevier, vol. 148(C).
    2. Xu, Weicong & Deng, Shuai & Zhao, Li & Zhang, Yue & Li, Shuangjun, 2019. "Performance analysis on novel thermodynamic cycle under the guidance of 3D construction method," Applied Energy, Elsevier, vol. 250(C), pages 478-492.
    3. Zhou, Yuan & Wang, Jiangjiang & Dong, Fuxiang & Qin, Yanbo & Ma, Zherui & Ma, Yanpeng & Li, Jianqiang, 2021. "Novel flexibility evaluation of hybrid combined cooling, heating and power system with an improved operation strategy," Applied Energy, Elsevier, vol. 300(C).
    4. Chen, Ruihua & Zhao, Ruikai & Deng, Shuai & Zhao, Li & Xu, Weicong, 2021. "A cycle research methodology for thermo-chemical engines: From ideal cycle to case study," Energy, Elsevier, vol. 228(C).
    5. Chen, Ruihua & Deng, Shuai & Xu, Weicong & Zhao, Li, 2020. "A graphic analysis method of electrochemical systems for low-grade heat harvesting from a perspective of thermodynamic cycles," Energy, Elsevier, vol. 191(C).
    6. Huang, Yisheng & Chen, Jianyong & Chen, Ying & Luo, Xianglong & Liang, Yingzong & He, Jiacheng & Yang, Zhi, 2022. "Performance explorations of an organic Rankine cycle featured with separating and mixing composition of zeotropic mixture," Energy, Elsevier, vol. 257(C).
    7. Wang, Yongzhen & Li, Chengjun & Zhao, Jun & Wu, Boyuan & Du, Yanping & Zhang, Jing & Zhu, Yilin, 2021. "The above-ground strategies to approach the goal of geothermal power generation in China: State of art and future researches," Renewable and Sustainable Energy Reviews, Elsevier, vol. 138(C).
    8. Chen, Ruihua & Xu, Weicong & Deng, Shuai & Zhao, Ruikai & Choi, Siyoung Q. & Zhao, Li, 2023. "A contemporary description of the Carnot cycle featured by chemical work from equilibrium: The electrochemical Carnot cycle," Energy, Elsevier, vol. 280(C).
    9. Xu, Weicong & Zhao, Li & Mao, Samuel S. & Deng, Shuai, 2020. "Towards novel low temperature thermodynamic cycle: A critical review originated from organic Rankine cycle," Applied Energy, Elsevier, vol. 270(C).
    10. Li, Jian & Peng, Xiayao & Yang, Zhen & Hu, Shuozhuo & Duan, Yuanyuan, 2022. "Design, improvements and applications of dual-pressure evaporation organic Rankine cycles: A review," Applied Energy, Elsevier, vol. 311(C).
    11. Liu, Changwei & Gao, Tieyu, 2019. "Off-design performance analysis of basic ORC, ORC using zeotropic mixtures and composition-adjustable ORC under optimal control strategy," Energy, Elsevier, vol. 171(C), pages 95-108.
    12. Su, Wen & Hwang, Yunho & shao, Yawei & Deng, Shuai & Zhao, Li & Nie, Xianhua & Zhang, Yue, 2019. "Error analysis of ORC performance calculation based on the Helmholtz equation with different binary interaction parameters of mixture," Energy, Elsevier, vol. 166(C), pages 414-425.
    13. Zhang, Yue & Deng, Shuai & Zhao, Li & Nie, Xianhua & Xu, Weicong & He, Junnan, 2020. "Exploring a potential application of hydrate separation for composition adjustable combined cooling and power system," Applied Energy, Elsevier, vol. 268(C).
    14. Li, Jian & Yang, Zhen & Shen, Jun & Duan, Yuanyuan, 2023. "Enhancement effects of adding internal heat exchanger on dual-pressure evaporation organic Rankine cycle," Energy, Elsevier, vol. 265(C).
    15. Qiang Liu & Ran Chen & Xinliu Yang & Xiao Xiao, 2023. "Thermodynamic Analyses of Sub- and Supercritical ORCs Using R1234yf, R236ea and Their Mixtures as Working Fluids for Geothermal Power Generation," Energies, MDPI, vol. 16(15), pages 1-22, July.
    16. Lu, Pei & Zhao, Li & Zheng, Nan & Liu, Shengli & Li, Xiaobing & Zhou, Xing & Yan, Jingbo, 2022. "Progress and prospect of flow phenomena and simulation on two-phase separation in branching T-junctions: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 167(C).
    17. Lai, Xi & Zhao, Li & Nie, Xianhua & Zhang, Yue & Zhang, Qi, 2023. "Hydrate-based composition separation of R32/R1234yf mixed working fluids applied in composition-adjustable organic Rankine cycle," Energy, Elsevier, vol. 284(C).
    18. Yongming Zhang & Zhe Yan & Li Li & Jiawei Yao, 2018. "A Hybrid Building Power Distribution System in Consideration of Supply and Demand-Side: A Short Overview and a Case Study," Energies, MDPI, vol. 11(11), pages 1-19, November.
    19. Feili, Milad & Rostamzadeh, Hadi & Ghaebi, Hadi, 2022. "Thermo-mechanical energy level approach integrated with exergoeconomic optimization for realistic cost evaluation of a novel micro-CCHP system," Renewable Energy, Elsevier, vol. 190(C), pages 630-657.
    20. Chen, Ruihua & Xu, Weicong & Deng, Shuai & Zhao, Ruikai & Choi, Siyoung Q. & Zhao, Li, 2023. "Towards the Carnot efficiency with a novel electrochemical heat engine based on the Carnot cycle: Thermodynamic considerations," Energy, Elsevier, vol. 284(C).

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:eee:appene:v:231:y:2018:i:c:p:468-480. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Catherine Liu (email available below). General contact details of provider: http://www.elsevier.com/wps/find/journaldescription.cws_home/405891/description#description .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.