Numerical study of perforated obstacles effects on the performance of solar parabolic trough collector

Frontiers in Chemistry

Chemistry

El Sayed Mohamed Tag-ElDin¹  Obai Younis²  Aissa Abderrahmane³  Zied Driss⁴  Samir Laouedj⁵  Tayeb Fahim⁵  Kamel Guedri⁶ 

[1] Center of Research, Faculty of Engineering, Future University in Egypt, New Cairo, Egypt;Department of Mechanical Engineering, College of Engineering in Wadi Addwasir, Prince Sattam Bin Abdulaziz University, Al-kharj, Saudi Arabia;Laboratoire de Physique Quantique de la Matière et Modélisation Mathématique (LPQ3M), Université Mustapha Stambouli de Mascara, Mascara, Algeria;Laboratory of Electromechanical Systems (LASEM), National School of Engineers of Sfax, University of Sfax, Sfax, Tunisia;Materials and Reactive Systems Laboratory (LMSR), Djillali Liabes University, Sidi Bel Abbes, Algeria;Mechanical Engineering Department, College of Engineering and Islamic Architecture, Umm Al-Qura University, Makkah, Saudi Arabia;

关键词: nanofluid;    parabolic trough solar collector;    Nusselt number;    perforated obstacles;    numerical investigation;   

DOI  :  10.3389/fchem.2022.1089080

 received in 2022-11-03, accepted in 2022-12-30,  发布年份 2023

来源: Frontiers

【 摘 要 】

The current work presents and discusses a numerical analysis of improving heat transmission in the receiver of a parabolic trough solar collector by introducing perforated barriers. While the proposed approach to enhance the collector’s performance is promising, the use of obstacles results in increased pressure loss. The Computational Fluid Dynamics (CFD) model analysis is conducted based on the renormalization-group (RNG) k-ɛ turbulent model associated with standard wall function using thermal oil D12 as working fluid The thermo-hydraulic analysis of the receiver tube with perforated obstacles is taken for various configurations and Reynolds number ranging from 18,860 to 81,728. The results are compared with that of the receiver without perforated obstacles. The receiver tube with three holes (PO3) showed better heat transfer characteristics. In addition, the Nusselt number (Nu) increases about 115% with the increase of friction factor 5–6.5 times and the performance evaluation criteria (PEC) changes from 1.22 to 1.24. The temperature of thermal oil fluid attains its maximum value at the exit, and higher temperatures (462.1 K) are found in the absorber tube with perforated obstacles with three holes (PO3). Accordingly, using perforated obstacles receiver for parabolic trough concentrator is highly recommended where significant enhancement of system’s performance is achieved.

【 授权许可】

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Copyright © 2023 Fahim, Laouedj, Abderrahmane, Driss, Tag-ElDin, Guedri and Younis.