Manual tracking for solar parabolic concentrator – For the case of solar injera baking, Ethiopia

Hailu, Arkbom

doi:10.1016/j.heliyon.2023.e12884

Cited by 3 publications

(1 citation statement)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…When nanoparticles are dispersed in the fluid, they can scatter and absorb some of the incident light. This absorption of light energy increases temperature within the nanofluid 26 . At a concentration of 50 ppm, the lower transmittance than other concentrations results in less light absorbed by the nanoparticles.…”

Section: Resultsmentioning

confidence: 99%

Optimizing solar collector efficiency through nanofluid analysis and investigating the impact of particle concentration, and stability

Sivaraman,

Kolandaivel,

Murugesan

et al. 2023

Env Prog and Sustain Energy

View full text Add to dashboard Cite

The emission of greenhouse gases contributes to global warming, and adopting renewable energy can mitigate the reliance on fossil fuels, which currently account for 84.3% of global energy production. Solar thermal energy represents a significant renewable energy source, with solar collectors contributing 54.1% of the world's solar energy. However, the thermal properties of the liquids used in these collectors are suboptimal, and adding particles to the fluid can enhance absorption and thermal characteristics. Nanofluids refer to solid particles reduced to nanoscale sizes, and this study focuses on producing an Ag nanofluid through mechanical exfoliation and its comparative analysis with a GO nanofluid regarding radiation absorption. The results indicate that the Ag nanofluid outperforms pure water and performs similarly at lower concentrations. Specifically, temperature differences of 4–7°C were observed for a simulated power of 1 unit, while the evaporation efficiency reached up to 40.8% for 200 and 500 ppm concentrations, compared to 28.6% for pure water. Moreover, under a radiation intensity of 60 units, the Ag nanofluid achieved the boiling temperature of the water after 85 s. In contrast, GO required at least 250 s, and pure water did not reach the boiling temperature within the 6‐min study period. Thus, the Ag nanofluid holds promise as an effective nanofluid for direct absorption solar collectors due to its affordability, low toxicity, and comparable benefits to graphene.

show abstract

Section: Resultsmentioning

confidence: 99%