Photovoltaic thermal solar system in presence of nanofluid cooling analyzing environmental parameter in existence of TEG module
Journal of Thermal Analysis and Calorimetry(2024)
摘要
Current work delves into enhancing the productivity of a photovoltaic (PV) unit by incorporating a thermoelectric generator (TEG). The cooling mechanism employs a triangular-shaped duct with a ferrofluid, and magnetic force is employed to augment the cooling efficiency. Additionally, the model accounts for the impact of dust on the system's productivity. The efficiency components, namely η th (thermal), η TE (thermoelectric), and η PV (electrical PV), have been evaluated across different ranges of ϕ (nanoparticle concentration), Ha (Hartmann number), and V in (inlet velocity). These results have been obtained through rigorous numerical simulations, with a comprehensive validation test to ensure their accuracy and reliability. When accounting for the presence of dust particles, we observe a reduction in η th , η TE , and η PV by approximately 3.98, 6.96, and 9.46%, respectively. Conversely, in the presence of dust, as Ha is increased, we note a notable enhancement in η th , η TE , and η PV , showing an increase of around 6.68, 19.16, and 0.69% respectively. It is worth mentioning that the increase in η PV's enhancement diminishes by about 4.12% under the influence of dust. When V in is set at 0.078, we observe significant enhancements in η th , η TE , and η PV , amounting to approximately 7.29, 20.25, and 0.72%, respectively, as Ha increases. However, it is worth noting that the influence of Ha on both η th and η TE diminishes, showing a decrease of about 8.25 and 4.48%, respectively, when V in is set to 0.17 m/s. On the other hand, an increase in V in leads to an intensified effect on η th , η TE , and η PV , with enhancements of around 10.19, 29.14, and 1%, respectively, under the condition of Ha = 0. Furthermore, with the rise of Ha, the influence of V in on η PV experiences an increment of about 0.5%, while its impact on ηth diminishes by approximately 6%. Introducing nanoparticles can bolster the thermal characteristics of the ferrofluid, leading to significant enhancements in performance, particularly in η TE . However, it is worth noting that the improvements in η th , η TE , and η PV due to the addition of nanoparticles decrease by about 13.37, 9.91, and 4.78%, respectively, with the increase of V in , especially in the absence of Ha. Additionally, the uniformity experiences substantial improvements of approximately 22.54 and 31.25% with the augmentation of Ha, observed at V in values of 0.078 and 0.17, respectively.
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关键词
Dust accumulation,Triangular-shaped duct,PVT,Ferrofluid,Numerical modeling
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