Publicación

Tipo de publicación: Artículos científicos (Publicados en revistas de divulgación o científicas)

Título del artículo: Low-Cost Integral Collector-Storage Solar Systems

Registrado por: Applied Thermal Engineering

Año de publicación: 2025

Resumen: The integral collector-storage solar systems larger-scale implementation requires addressing several issues including relatively high nighttime losses and cost-effective selective coating fabrication method. To address these issues, we use the galvanostatic electrodeposition of a SC based on nickel / black nickel and evaluate the thermal performance of the ICS systems. The initial study was developed on 16 cm2 stainless steel substrates. The optical properties stability for a stainless-steel sheet with nickel/black nickel selective coating after 200 h at 250 ?C is demonstrated, with 92 % solar absorptance and thermal emittance of 10 % (at 100 ?C). The solutions were analyzed using cyclic voltammetry to obtain the electrodeposition conditions. The coatings were analyzed using a full suite of characterization techniques (Reflectance spectrophotometry, accelerated weathering test SEM, TG, DSC and XRD) to relate the temperature thermal treatment effect with the optical performance and composition of the selective coating. The deposition process was scaled up and applied to integral collectorstorage solar systems using stainless-steel cylindrical tanks of 1.2 m (length) by 0.23 m (diameter). We fabricated two full-size collectors (1.6 m x 1.2 m) containing four tanks each. Outdoor testing demonstrated that the collector with the electrodeposited selective coating shows higher useful heat and lower nighttime losses than conventional painted systems. The cost analysis showed that the electrodeposited integral collector-storage solar system was about USD $2 cheaper than the painted integral collector-storage solar system.

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Autor(es): Francisco Ivan Lizama-Tzec, Dallely Herrera-Zamora, Manuel Rodríguez-Pérez, Alberto Vega-Poot, Rodolfo P´erez-Espinosa, Oscar Ceh, Octavio García-Valladares, Gerko Oskam, Geonel Rodriguez-Gattorno.

Campo: Energía

Disciplina: Energía Termosolar

Subdisciplina: Energías no convencionales

Número de registro: doi.org/10.1016/j.applthermaleng.2025.126675