Microstructural optimization and extended durability studies of low-cost rough graphite–aluminium solar absorber surfaces

Developments in the synthesis of flat plate solar selective absorber materials via sol–gel methods: A review

“…In general, the CVD method has good potential in industrialscale production but there are difficulties in ensuring the stoichiometry of the metal oxides produced [39]. Mechanical grinding is a simple and cost-effective method of SSA production but the selectivity of the absorber material is low [11,40].…”

Incorporation of spherical shaped CuO@SiO2 light microtraps into CuCoMnOx spinels to enhance solar absorbance

“…2.6 | Synthesis of coating material 6.5 g of the sol further diluted in a mixture MeOH/H 2 O (1:1 v/v) and then added different amounts of CuO@SiO 2 preparing different concentration like 0.25, 0.5, and 1 mg/mL. The mixture stirred for 30 minutes for homogenization and then used for coating on the Al surfaces.…”

“…This way, a s was improved to 0.957 and ε Τ to 0.038 at 100°C ( α / ε = 25) making this technology very promising. Electrochemical treatment of metallic surfaces affects drastically the α sol and ε T values of the metal substrate . Micro arc oxidation (ΜΑΟ) combined with sol‐gel process was used to develop solar selective absorber systems.…”

“…Electrochemical treatment of metallic surfaces affects drastically the α sol and ε T values of the metal substrate. 6 Micro arc oxidation (ΜΑΟ) combined with sol-gel process was used | 1537 KORDAS to develop solar selective absorber systems. The layers consisted of anatase, rutile, α-alumina, γ-alumina, and Al 2 TiO 5 phases the fraction of which was affected by the conditions of processing.…”