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Investigations on Heat Loss in Solar Tower Receivers with Wind Speed Variation

Received: 21 May 2015     Accepted: 27 June 2015     Published: 7 July 2015
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Abstract

The performance of the Solar Tower Receiver (STR) affects significantly the efficiency of the entire solar power generation system and minimizing the heat loss of the STR plays a dominant role in increasing its performance. Unlike the other thermal losses the convective heat loss in STR has direct relation with wind conditions. In this study a Simulation tool ANSYS® FLUENT® was used to determine the convection heat loss in both cavity and externalSTR at wind speed varies from(2) to (10) m/s. A fixed tilt angle (θ= 90°) for the cavity receiver is adopted. The results show that the convection heat loss in both receivers increases with increase of wind speed. The absolute values are considerably lower in the case of the cavity with comparison to the external type. Furthermore, the radiative heat loss in the external and the cavity receivers is investigated. The results show that for the same absorbed area, the radiation loss in the cavity is lower by almost (80%) than the radiation loss in the external.

Published in International Journal of Sustainable and Green Energy (Volume 4, Issue 4)
DOI 10.11648/j.ijrse.20150404.15
Page(s) 159-165
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2015. Published by Science Publishing Group

Keywords

Solar Tower Receiver, Central Receiver System, Heat loss, CFD

References
[1] Behar, O., Khellaf, A., and Mohammedi, K.,"A review of studies on central receiver solar thermal power plants". In: Renewable and Sustainable Energy Reviews, Algeria, pp. 12-39, 2013.
[2] An Overview of CSP in Europe, North Africa and the Middle East, CSP Today, October; 2008.
[3] IRENA, 2012, "Concentrating Solar Power. Cost analysis series". In: Renewable Energy Technologies.
[4] Romero, Manuel.,Zarza, E., 2007, "Concentrating solar thermal power. Energy conversion". In: Taylor & Francis Group.
[5] Romero, M., Buck, R., Pacheco, J., "An Update on Solar Central Receiver Systems, Projects, and Technologies". In: Solar Energy Engineering, Madrid, Spain, pp. 98-108, 2002.
[6] Antonio, L., A vila-Marın., "Volumetric receivers in Solar Thermal Power Plants withCentral Receiver System technology: A review“. In: Solar Energy, Madrid, Spain, pp. 891-910, 2011.
[7] Shuang-Ying Wu., Lan, Xiao., "Convection heat loss from cavity receiver in parabolic dish solar thermal power system: A review". In: Solar Energy, Chine, pp. 1342-1355, 2010.
[8] Clausing, A.M., "An analysis of convective losses from cavity solar central receivers”. In: Solar Energy, USA, pp. 295-300, 1981.
[9] Stine, W.B., McDonald, C.G., 1989, "Cavity receiver convective heat loss". In:Proceedings of International Solar Energy Society Solar World Congress,Japan, pp. 1318–1322.
[10] Leibfried, U., Ortjohann, J., "Convective heat loss from upward anddownward-facingcavity solar receivers: measurements and calculations". In: Solar Energy Engineering, pp. 75–84, 1995.
[11] Sendhil Kumar, N., Reddy, K.S., "Numerical investigation of naturalconvection heat loss in modified cavity receiver for fuzzy focal solar dish concentrator". In: Solar Energy, pp. 846–855, 2007.
[12] Prakash, M., Kedare, S.B., Nayak, J.K., "Investigations on heat losses from a solar cavity receiver". In: Solar Energy, India, pp. 157–170, 2008.
[13] Qiang, Yu.,Zhifeng, Wang., "Simulation and analysis of the central cavity receiver’s performanceof solar thermal power tower plant". In: Solar Energy, Chine, pp. 164-174, 2011.
[14] A. Soum-Glaude, I. Bousquet, M. Bichotte, S. Quoizola, L. Thomas, G.Flamant, 2013,“Optical characterization and modeling of coatings intended as high temperature solar selective absorbers”. In: Solar PACES 2013, Las Vegas.
[15] Springer, 2010, “VDI Heat Atlas, Second Edition”. Heidelberg, Germany.
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  • APA Style

    Ramadan Abdiwe, Markus Haider. (2015). Investigations on Heat Loss in Solar Tower Receivers with Wind Speed Variation. International Journal of Sustainable and Green Energy, 4(4), 159-165. https://doi.org/10.11648/j.ijrse.20150404.15

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    ACS Style

    Ramadan Abdiwe; Markus Haider. Investigations on Heat Loss in Solar Tower Receivers with Wind Speed Variation. Int. J. Sustain. Green Energy 2015, 4(4), 159-165. doi: 10.11648/j.ijrse.20150404.15

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    AMA Style

    Ramadan Abdiwe, Markus Haider. Investigations on Heat Loss in Solar Tower Receivers with Wind Speed Variation. Int J Sustain Green Energy. 2015;4(4):159-165. doi: 10.11648/j.ijrse.20150404.15

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  • @article{10.11648/j.ijrse.20150404.15,
      author = {Ramadan Abdiwe and Markus Haider},
      title = {Investigations on Heat Loss in Solar Tower Receivers with Wind Speed Variation},
      journal = {International Journal of Sustainable and Green Energy},
      volume = {4},
      number = {4},
      pages = {159-165},
      doi = {10.11648/j.ijrse.20150404.15},
      url = {https://doi.org/10.11648/j.ijrse.20150404.15},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijrse.20150404.15},
      abstract = {The performance of the Solar Tower Receiver (STR) affects significantly the efficiency of the entire solar power generation system and minimizing the heat loss of the STR plays a dominant role in increasing its performance. Unlike the other thermal losses the convective heat loss in STR has direct relation with wind conditions. In this study a Simulation tool ANSYS® FLUENT® was used to determine the convection heat loss in both cavity and externalSTR at wind speed varies from(2) to (10) m/s. A fixed tilt angle (θ= 90°) for the cavity receiver is adopted. The results show that the convection heat loss in both receivers increases with increase of wind speed. The absolute values are considerably lower in the case of the cavity with comparison to the external type. Furthermore, the radiative heat loss in the external and the cavity receivers is investigated. The results show that for the same absorbed area, the radiation loss in the cavity is lower by almost (80%) than the radiation loss in the external.},
     year = {2015}
    }
    

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  • TY  - JOUR
    T1  - Investigations on Heat Loss in Solar Tower Receivers with Wind Speed Variation
    AU  - Ramadan Abdiwe
    AU  - Markus Haider
    Y1  - 2015/07/07
    PY  - 2015
    N1  - https://doi.org/10.11648/j.ijrse.20150404.15
    DO  - 10.11648/j.ijrse.20150404.15
    T2  - International Journal of Sustainable and Green Energy
    JF  - International Journal of Sustainable and Green Energy
    JO  - International Journal of Sustainable and Green Energy
    SP  - 159
    EP  - 165
    PB  - Science Publishing Group
    SN  - 2575-1549
    UR  - https://doi.org/10.11648/j.ijrse.20150404.15
    AB  - The performance of the Solar Tower Receiver (STR) affects significantly the efficiency of the entire solar power generation system and minimizing the heat loss of the STR plays a dominant role in increasing its performance. Unlike the other thermal losses the convective heat loss in STR has direct relation with wind conditions. In this study a Simulation tool ANSYS® FLUENT® was used to determine the convection heat loss in both cavity and externalSTR at wind speed varies from(2) to (10) m/s. A fixed tilt angle (θ= 90°) for the cavity receiver is adopted. The results show that the convection heat loss in both receivers increases with increase of wind speed. The absolute values are considerably lower in the case of the cavity with comparison to the external type. Furthermore, the radiative heat loss in the external and the cavity receivers is investigated. The results show that for the same absorbed area, the radiation loss in the cavity is lower by almost (80%) than the radiation loss in the external.
    VL  - 4
    IS  - 4
    ER  - 

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Author Information
  • Institute for Energy Systems and Thermodynamics, Vienna University of Technology, Wien, Austria

  • Institute for Energy Systems and Thermodynamics, Vienna University of Technology, Wien, Austria

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