Performance analysis of a parabolic trough solar collector with non-uniform solar flux conditions

Performance analysis of a parabolic trough solar collector using Al2O3/synthetic oil nanofluid

“…It can be seen that the CTD is an increasing function with the DNI for a fixed inlet temperature of the HTF for the traditional PTC system which is in a good agreement with [29]. For the PTC system using nanofluid, the variation is similar with the traditional PTC system.…”

“…The solar energy flux distribution on the outer surface of the absorber was obtained using the SolTRACE software by Wang et al [29]. The heat flux distribution of Wang et al (Fig.…”

Real-time thermal states monitoring of absorber tube for parabolic trough solar collector with non-uniform solar flux

“…However, it suffers from the non‐uniform solar flux, inner unsteady fluid, and variation of the solar radiation, which would cause some problems to the safety and reliability . Between the heated and not‐heated parts, there is great thermal gradient which can cause excessive thermal stresses to the pipe . Thus, the analysis of thermal state of this system is vital for its application.…”

“…The comparing results of the simulation and experimental data show that the proposed method is reliable. To deal with the coupling problem including fluid flow, heat transfer, and thermal stress, Wang et al developed a solar ray trace method coupled with FEM in a PTC system. Under different operation parameters, the circumferential temperature difference (CTD) and thermal stress of the absorber were studied numerically.…”

Experimental investigation of the bending of absorber tube of solar parabolic trough concentrator and comparison with analytical results

“…Akbarimoosavia and Yaghoubi (2014) have extended their previous work (Yaghoubi and Akbarimoosavi, 2011) by considering two supports between the ends of the absorber tube. Wang et al (2015) have used CFD software to compute the stresses and the deflection of the absorber tube when it is free to bend and expand. However in power plants, several receivers are joined together to make an absorber tube which is supported (along the length) by hinges at equal distances (Kreith and Goswami, 2007).…”