Search

• Performance of bifacial modules are studied experimentally in indoor and outdoor. • Energy yield gain of different bifacial modules varies with environmental factors. • HJT module shows the highest performance due to its bifaciality and coefficient. The tunnel oxide passivated contacts (TOPCon) cell, and the Si heterojunction solar cell (HJT) based on Si cells with high-efficiency potential have recently been transferred from the laboratory to manufacturing technology. However, the harvested energy of advanced bifacial modules has not yet been proved in the field. Our project aims to present an experimental study on the energy yield performance of the TOPCon bifacial PV module compared to HJT and PERC bifacial PV modules in the southernmost of China, Hainan province. The experimental results have proven that the energy yield performance of HJT bifacial modules is 8.79% higher than that of the PERC modules, and the energy yield gain of the TOPCon modules is 5.55% higher compared to PERC modules. [ABSTRACT FROM AUTHOR]

To exploit indigenous microalgae with potential for antioxidant activity, 10 microalgal strains (expressed as genus and species) were isolated from fresh and sea waters in Hainan Province, China, according to their high biomass, strong antioxidant capacity and antioxidant enzyme activity. The strains were identified based on their morphology, 18s rDNA and internal transcribed spacer (ITS) sequence analysis. Five strains were identified as Dictyosphaerium sp. 1A10, Desmodesmus armatus (D. armatus) B38, Masaia oloidia 2Fg, Chlorella vulgaris B43 and Chlamydomonas chlamydogama WC11. Microalgal antioxidant capacity was determined. Dictyosphaerium sp. 1A10 showed the highest superoxide dismutase activity (940 ± 10 U/g tissue), 2,2′-diphenyl-1-picryhydrazyl radical scavenging capacity (100 ± 10%) and oxygen radical absorbance capacity (620 ± 10 μmol Trolox/g); D. armatus B38 showed the highest glutathione peroxidase activity (110 ± 10 U/g tissue), ferrous ion chelating capacity (93 ± 7%) and hydroxyl radical-scavenging capacity (97 ± 2%); Scenedesmus ecornis (S. ecornis) G2 showed the highest 2,2′-azinobis-(3-ethylbenzthiazoline-6-sulphonate) scavenging capacity (92 ± 5%). PCA also suggested that D. armatus B38, Dictyosphaerium sp. 1A10 and S. ecornis G2 with highest comprehensive scores (1.83, 1.23, and 0.59, respectively) could be the most appropriate candidates for antioxidants. Image 1 [ABSTRACT FROM AUTHOR]