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Nie podano kosztów publikacji ! (W celu uzupełnienia skontaktuj się z Dyrektorem Dyscypliny) [136820] Artykuł: Experimental and numerical comparison of glass tube collector with relative single-axis tracking and flat-plate collector without tracking during cloudy-sky daysCzasopismo: Solar Energy Tom: 291ISSN: 0038-092X Opublikowano: Marzec 2025 Autorzy / Redaktorzy / Twórcy Grupa MNiSW: Publikacja w czasopismach wymienionych w wykazie ministra MNiSzW (część A) Punkty MNiSW: 0 ![]() ![]() |
Single-axis trackers can improve the thermal performance of solar collectors by up to 40 % during clear-sky days. However, these advantages can be significantly reduced during the cloudy-sky days. This paper experimentally and numerically investigated and compared the thermal performances of two solar collector types (with the same inclined position and absorber material) in cases when the percentage share of diffuse solar radiation in total solar radiation was more dominant than beam solar radiation: glass tube collector with relative single-axis tracking (novel solar tracking concept) and fixed flat-plate collector (traditional solar non-tracking concept). Experimental results for one cloudy-sky day (29 July 2021) showed that compared to a fixed solar collector, the new tracking solar collector’s average daily specific useful heat was higher by about 8 % (