IDEAS home Printed from https://ideas.repec.org/a/eee/appene/v195y2017icp426-438.html
   My bibliography  Save this article

Numerical analysis of a vertical double-pipe single-flow heat exchanger applied in an active cooling system for high-power LED street lights

Author

Listed:
  • Schmid, Gerd
  • Huang, Zun-Long
  • Yang, Tai-Her
  • Chen, Sih-Li

Abstract

The present study examines the use of a vertical double-pipe single-flow heat exchanger as part of an active air cooling system for a 150W LED street light. The air is circulated inside the lamppost by an internal fan to form a closed-loop system. The heat is dissipated to the surrounding air by natural convection, reaching Rayleigh numbers up to Ra=6.5×1010. Experiments with a 5m high prototype were conducted, and the data were used to validate the numerical model. The experimental results show that the LED excess temperature can be lowered to about 42°C. A two-dimensional axisymmetric numerical simulation was performed to study the influence of various parameters, including pipe length, material conductivity, flow direction, pipe diameter ratio, and mass flow rate, on the heat transfer rate. The findings show that the additional heat loss created by extending the lamppost largely depends on the flow rate. When extending the lamppost from 3 to 5m at a high mass flow rate of 0.014kg/s, the heat loss increases by 34.1% to 120.2W. The numerical study was also used to visualize the hydrodynamic boundary layers on the surface of the lamppost and the temperature contours in and outside of the heat exchanger.

Suggested Citation

  • Schmid, Gerd & Huang, Zun-Long & Yang, Tai-Her & Chen, Sih-Li, 2017. "Numerical analysis of a vertical double-pipe single-flow heat exchanger applied in an active cooling system for high-power LED street lights," Applied Energy, Elsevier, vol. 195(C), pages 426-438.
    • Handle: RePEc:eee:appene:v:195:y:2017:i:c:p:426-438
    DOI: 10.1016/j.apenergy.2017.03.054
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0306261917302908
    Download Restriction: Full text for ScienceDirect subscribers only
    File URL: https://libkey.io/10.1016/j.apenergy.2017.03.054?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. Beier, Richard A. & Acuña, José & Mogensen, Palne & Palm, Björn, 2013. "Borehole resistance and vertical temperature profiles in coaxial borehole heat exchangers," Applied Energy, Elsevier, vol. 102(C), pages 665-675.
    2. Kaiser, A.S. & Zamora, B. & Mazón, R. & García, J.R. & Vera, F., 2014. "Experimental study of cooling BIPV modules by forced convection in the air channel," Applied Energy, Elsevier, vol. 135(C), pages 88-97.
    3. Yekoladio, P.J. & Bello-Ochende, T. & Meyer, J.P., 2013. "Design and optimization of a downhole coaxial heat exchanger for an enhanced geothermal system (EGS)," Renewable Energy, Elsevier, vol. 55(C), pages 128-137.
    4. Jalaluddin, & Miyara, Akio & Tsubaki, Koutaro & Inoue, Shuntaro & Yoshida, Kentaro, 2011. "Experimental study of several types of ground heat exchanger using a steel pile foundation," Renewable Energy, Elsevier, vol. 36(2), pages 764-771.
    5. Yang, Jian-Feng & Zeng, Min & Wang, Qiu-Wang, 2015. "Numerical investigation on shell-side performances of combined parallel and serial two shell-pass shell-and-tube heat exchangers with continuous helical baffles," Applied Energy, Elsevier, vol. 139(C), pages 163-174.
    6. Teo, H.G. & Lee, P.S. & Hawlader, M.N.A., 2012. "An active cooling system for photovoltaic modules," Applied Energy, Elsevier, vol. 90(1), pages 309-315.
    7. Acuña, José & Palm, Björn, 2013. "Distributed thermal response tests on pipe-in-pipe borehole heat exchangers," Applied Energy, Elsevier, vol. 109(C), pages 312-320.
    8. Jang, Daeseok & Yook, Se-Jin & Lee, Kwan-Soo, 2014. "Optimum design of a radial heat sink with a fin-height profile for high-power LED lighting applications," Applied Energy, Elsevier, vol. 116(C), pages 260-268.
    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. Jiawei Yao & Yongming Zhang & Zhe Yan & Li Li, 2018. "A Group Approach of Smart Hybrid Poles with Renewable Energy, Street Lighting and EV Charging Based on DC Micro-Grid," Energies, MDPI, vol. 11(12), pages 1-17, December.
    2. Lin, Xiaohui & Mo, Songping & Jia, Lisi & Yang, Zhi & Chen, Ying & Cheng, Zhengdong, 2019. "Experimental study and Taguchi analysis on LED cooling by thermoelectric cooler integrated with microchannel heat sink," Applied Energy, Elsevier, vol. 242(C), pages 232-238.

    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. Raymond, Jasmin & Lamarche, Louis & Malo, Michel, 2015. "Field demonstration of a first thermal response test with a low power source," Applied Energy, Elsevier, vol. 147(C), pages 30-39.
    2. Aneta Sapińska-Sliwa & Marc A. Rosen & Andrzej Gonet & Joanna Kowalczyk & Tomasz Sliwa, 2019. "A New Method Based on Thermal Response Tests for Determining Effective Thermal Conductivity and Borehole Resistivity for Borehole Heat Exchangers," Energies, MDPI, vol. 12(6), pages 1-22, March.
    3. Ruoping, Yan & Xiaohui, Yu & Fuwei, Lu & Huajun, Wang, 2020. "Study of operation performance for a solar photovoltaic system assisted cooling by ground heat exchangers in arid climate, China," Renewable Energy, Elsevier, vol. 155(C), pages 102-110.
    4. Li, Wenjia & Hao, Yong, 2017. "Efficient solar power generation combining photovoltaics and mid-/low-temperature methanol thermochemistry," Applied Energy, Elsevier, vol. 202(C), pages 377-385.
    5. Zhang, Linfeng & Zhang, Quan & Huang, Gongsheng & Du, Yaxing, 2014. "A p(t)-linear average method to estimate the thermal parameters of the borehole heat exchangers for in situ thermal response test," Applied Energy, Elsevier, vol. 131(C), pages 211-221.
    6. Wilke, Sascha & Menberg, Kathrin & Steger, Hagen & Blum, Philipp, 2020. "Advanced thermal response tests: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 119(C).
    7. Rounis, Efstratios Dimitrios & Athienitis, Andreas & Stathopoulos, Theodore, 2021. "Review of air-based PV/T and BIPV/T systems - Performance and modelling," Renewable Energy, Elsevier, vol. 163(C), pages 1729-1753.
    8. Gordon, David & Bolisetti, Tirupati & Ting, David S-K. & Reitsma, Stanley, 2018. "Experimental and analytical investigation on pipe sizes for a coaxial borehole heat exchanger," Renewable Energy, Elsevier, vol. 115(C), pages 946-953.
    9. Hans Schwarz & Borja Badenes & Jan Wagner & José Manuel Cuevas & Javier Urchueguía & David Bertermann, 2021. "A Case Study of Thermal Evolution in the Vicinity of Geothermal Probes Following a Distributed TRT Method," Energies, MDPI, vol. 14(9), pages 1-17, May.
    10. Choi, Wonjun & Ooka, Ryozo, 2016. "Effect of disturbance on thermal response test, part 1: Development of disturbance analytical model, parametric study, and sensitivity analysis," Renewable Energy, Elsevier, vol. 85(C), pages 306-318.
    11. Zhou, Yuekuan & Zheng, Siqian & Zhang, Guoqiang, 2019. "Study on the energy performance enhancement of a new PCMs integrated hybrid system with the active cooling and hybrid ventilations," Energy, Elsevier, vol. 179(C), pages 111-128.
    12. Pablo Casado & José M. Blanes & Francisco Javier Aguilar Valero & Cristian Torres & Manuel Lucas Miralles & Javier Ruiz Ramírez, 2021. "Photovoltaic Evaporative Chimney I–V Measurement System," Energies, MDPI, vol. 14(24), pages 1-14, December.
    13. Song, Xianzhi & Wang, Gaosheng & Shi, Yu & Li, Ruixia & Xu, Zhengming & Zheng, Rui & Wang, Yu & Li, Jiacheng, 2018. "Numerical analysis of heat extraction performance of a deep coaxial borehole heat exchanger geothermal system," Energy, Elsevier, vol. 164(C), pages 1298-1310.
    14. Peng Li & Peng Guan & Jun Zheng & Bin Dou & Hong Tian & Xinsheng Duan & Hejuan Liu, 2020. "Field Test and Numerical Simulation on Heat Transfer Performance of Coaxial Borehole Heat Exchanger," Energies, MDPI, vol. 13(20), pages 1-19, October.
    15. Ruiz, J. & Martínez, P. & Sadafi, H. & Aguilar, F.J. & Vicente, P.G. & Lucas, M., 2020. "Experimental characterization of a photovoltaic solar-driven cooling system based on an evaporative chimney," Renewable Energy, Elsevier, vol. 161(C), pages 43-54.
    16. Lucas, M. & Ruiz, J. & Aguilar, F.J. & Cutillas, C.G. & Kaiser, A.S. & Vicente, P.G., 2019. "Experimental study of a modified evaporative photovoltaic chimney including water sliding," Renewable Energy, Elsevier, vol. 134(C), pages 161-168.
    17. Yang, Li-Hao & Liang, Jyun-De & Hsu, Chien-Yeh & Yang, Tai-Her & Chen, Sih-Li, 2019. "Enhanced efficiency of photovoltaic panels by integrating a spray cooling system with shallow geothermal energy heat exchanger," Renewable Energy, Elsevier, vol. 134(C), pages 970-981.
    18. Aydın, Murat & Sisman, Altug, 2015. "Experimental and computational investigation of multi U-tube boreholes," Applied Energy, Elsevier, vol. 145(C), pages 163-171.
    19. Beier, Richard A. & Spitler, Jeffrey D., 2016. "Weighted average of inlet and outlet temperatures in borehole heat exchangers," Applied Energy, Elsevier, vol. 174(C), pages 118-129.
    20. Zhao, Bin & Hu, Mingke & Ao, Xianze & Xuan, Qingdong & Pei, Gang, 2020. "Spectrally selective approaches for passive cooling of solar cells: A review," Applied Energy, Elsevier, vol. 262(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:195:y:2017:i:c:p:426-438. 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.