Parabolic trough solar collector (PTSC) is one of the best solar thermal systems for producing thermal energy. PTSC works in medium and high temperature levels, and due to their wide range of industrial applications, improving their performance is very important. In the present study, a combination of thermal oil-Al₂O₃−MWCNT (80%-20%) hybrid nanofluid and finned rod turbulator are employed to improve the performance of a PTSC. The Eulerian-Eulerian two-phase model is used to simulate the PTSC and assess its performance from thermo-hydraulic and economic viewpoints. Simulations are performed for different values of fin angle (γ), rod diameter (D), fin pitch (Q) and Reynolds number (Re). The performance metrics considered to evaluate the collector performance include Nusselt number (Nu), friction factor, Performance Evaluation Criterion (PEC), Thermal Efficiency Enhancement (TEE) and cost. The obtained results revealed that the use of finned rod turbulator is useful for Re less than 12,000 and should not be used in larger values of Re as it weakens the overall hydrothermal performance of the PTSC. In addition, the economic analysis revealed that the novel geometry can save 14% on material usage.

抛物槽式太阳能集热器 (PTSC) 是用于产生热能的最佳太阳能热系统之一。PTSC工作在中高温级别，由于其工业应用范围广泛，提高其性能非常重要。在本研究中，采用热油-Al ₂ O ₃ -MWCNT (80%-20%) 混合纳米流体和翅片杆湍流器的组合来提高 PTSC 的性能。欧拉-欧拉两相模型用于模拟 PTSC 并从热工水力和经济角度评估其性能。对翅片角度 (γ)、杆直径 ( D )、翅片节距 ( Q ) 和雷诺数 ( Re）。用于评估集热器性能的性能指标包括努塞尔数 (Nu)、摩擦系数、性能评估标准 (PEC)、热效率增强 (TEE) 和成本。获得的结果表明，使用翅片杆湍流器对小于 12,000 的Re是有用的，并且不应该用于较大的Re值，因为它会削弱 PTSC 的整体水热性能。此外，经济分析表明，新颖的几何形状可以节省 14% 的材料使用量。