Investigation of Thermal Conductivity for CuNP Deposited on 316L Stainless Steel by PVD as a Solar Absorber Surface
Ahmed S. Abbas Mohammed J. Kadhim Khalid A. Sukkar
Abstractin this study copper nanoparticle (CuNP) deposited on the 316L stainless steel (316L SS) by physical vapour deposition (PVD) technique. The development of thermal conductivity is essential for thermal application, especially in solar energy applications. The distinctive method transient plane source (TPS) for measuring the thermal conductivity of the copper thin film was used in comparison with the 316L SS base metal, while the ambient conditions including heating power, measurement time and sample temperature were 6.9 W, 5 Sec and 34 o C respectively, were employed in this test. The results show that the prepared film by a thermal vacuum evaporation technique has an enchantment on the improvement of physical properties like absorption and thermal conductivity in comparison with parent 316L SS substrate. It was noted that the thermal conductivity improved dramatically with 39.82 % comparing with 316L SS substrate. Structural properties of thin film layer achieved have been analyzed by (XRD). The other characterization likes surface morphology has been investigated by using SEM, FESEM, and AFM. This improvement from an economical energy point of view for the 316L SS-CuNP enhanced the heat gaining process of solar collector system considerably with high efficiency.