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Deformation of receiver in solar parabolic trough collector due to non uniform temperature and solar flux distribution and use of bimetallic absorber tube with multiple supports

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  • Khanna, Sourav
  • Newar, Sanjeev
  • Sharma, Vashi
  • Panigrahi, Pradipta Kumar
  • Mallick, Tapas K.

Abstract

Present study aims at minimising the risk of bending in receiver of Parabolic Trough Collector (PTC) using double layered absorber held at pillars and mathematical equations are formulated. Tube is modelled for practical scenarios supported by pillars made up of movable structure that can slide to help absorber expand when heated. Ball joints at contact points enable tube to rotate. Equations are validated against the experimental measurements. Effects of placement of conductive material, focal length, PTC width, geometrical imperfections and HTF flow rate on bending and energy losses due to bending are studied. It is found that (i) single layered absorber leads to bending and energy loss of −15.1 mm and 2.3%. Double layered absorber with high conductivity material as inside layer reduces bending/energy loss to −10.0mm/1.0%. However, use of high conductivity as outside layer further reduces bending/energy loss to −6.1mm/0.4%, (ii) change in HTF flow rate from 0.4 kg/s to 1.4 kg/s reduces bending/energy loss from −15.1mm/2.3% to −10.2mm/1.0% for single layered absorber and −6.1mm/0.4% to −4.5mm/0.2% for double layered and (iii) focal length near to 0.7 m reduces bending/energy loss to 0mm/0%.

Suggested Citation

  • Khanna, Sourav & Newar, Sanjeev & Sharma, Vashi & Panigrahi, Pradipta Kumar & Mallick, Tapas K., 2018. "Deformation of receiver in solar parabolic trough collector due to non uniform temperature and solar flux distribution and use of bimetallic absorber tube with multiple supports," Energy, Elsevier, vol. 165(PA), pages 1078-1088.
    • Handle: RePEc:eee:energy:v:165:y:2018:i:pa:p:1078-1088
    DOI: 10.1016/j.energy.2018.09.145
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    References listed on IDEAS

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    1. Sharma, Vashi & Khanna, Sourav & Nayak, Jayanta K. & Kedare, Shireesh B., 2016. "Effects of shading and blocking in compact linear fresnel reflector field," Energy, Elsevier, vol. 94(C), pages 633-653.
    2. Fernández-García, A. & Zarza, E. & Valenzuela, L. & Pérez, M., 2010. "Parabolic-trough solar collectors and their applications," Renewable and Sustainable Energy Reviews, Elsevier, vol. 14(7), pages 1695-1721, September.
    3. Khanna, Sourav & Sharma, Vashi, 2015. "Effect of number of supports on the bending of absorber tube of parabolic trough concentrator," Energy, Elsevier, vol. 93(P2), pages 1788-1803.
    4. Idris Al Siyabi & Sourav Khanna & Tapas Mallick & Senthilarasu Sundaram, 2018. "Multiple Phase Change Material (PCM) Configuration for PCM-Based Heat Sinks—An Experimental Study," Energies, MDPI, vol. 11(7), pages 1-14, June.
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    Cited by:

    1. Halimi, Mohammed & El Amrani, Aumeur & Messaoudi, Choukri, 2021. "New experimental investigation of the circumferential temperature uniformity for a PTC absorber," Energy, Elsevier, vol. 234(C).
    2. Yang, Honglun & Wang, Qiliang & Huang, Yihang & Feng, Junsheng & Ao, Xianze & Hu, Maobin & Pei, Gang, 2019. "Spectral optimization of solar selective absorbing coating for parabolic trough receiver," Energy, Elsevier, vol. 183(C), pages 639-650.
    3. Tang, X.Y. & Yang, W.W. & Yang, Y. & Jiao, Y.H. & Zhang, T., 2021. "A design method for optimizing the secondary reflector of a parabolic trough solar concentrator to achieve uniform heat flux distribution," Energy, Elsevier, vol. 229(C).

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