CHARACTERIZATION AND COMPARISON OF SOLAR SELECTIVE COATINGS BETWEEN NI-AL AND NI-CO ON ALUMINUM SUBSTRATE

An ideal solar absorber surface coating must have good optical properties like high solar absorptance with minimum solar emittance. Development of new coating is fabricated by embedding metallic particles composed of a nickelaluminium (NiAl) alloy into the black paint as well as solar selective black nickel-cobalt (NiCo) electroplating on aluminium alloys with nickel undercoat is done. Characterization of such solar selective surface coatings are done and compared with commercial black paint. A new and affordable solar selective surface coating having higher solar absorption efficiency with low in-frared emittance compared to the commercial black paint coating used in most ordinary solar water heating systems has been developed. Characterization of coating includes Optical properties studies of coatings, Surface morphology and XRD studies, and solar water heater performance with new coatings. https://journalnx.com/journal-article/2015036

Study on Importance, Procedure, and Scope of UNNAT Bharat Abhiyan –A Scoping Review

Unnat Bharat Abhiyan is an essential aspect of enhancing the standard of living for rural residents. The purpose is to provide rural and local governments in India with access to specialized resources for science, engineering, technology, and management, particularly those with exceptional academic achievements in these domains. Readers can acquire knowledge for specific needs and research in the field of Unnat Bharat Abhiyan. Unnat Bharat Abhiyan is a government program with a unique, transformative and comprehensive approach to development. It anticipates the development of chosen communities in a variety of sectors, including agriculture, health, education, cleanliness, and the environment, in an integrated manner. Unnat Bharat Abhiyan not just to promotes infrastructure, but also links people\u27s involvement, women\u27s equality, hygiene, social justice, educational establishments and localities among rural areas and their people, and other initiatives. It aspires to be a paradigm for implementation and future scope. Furthermore, rural poverty, unemployment, and poor infrastructure have a domino effect on urban slums, culminating in social and economic conflicts, which include economic hardship and urban deprivation. Urbanization in India is the result of demographic explosions and poverty-led rural-to-city migration. Therefore, rural development related to economic growth is very important for improving the standard of living of rural residents. This study deals with this

Silicone rubber nanocomposites: optimal graphene dosing for mechanical and electrical enhancements

The combination of lightweight, durable, and flexible elastomer nanocomposites presents a unique set of features that make them highly promising for a range of several engineering applications. Present work investigates the performance of the mechanical and electrical characteristics of a nanocomposite produced by combining silicon rubber (SR) with nano-Graphene, copper oxide (CuO). Two roll mixing followed by compression moulding is used to manufacture different configurations of Graphene/CuO/SR nano composite. Nano composites specimens are fabricated with 1, 2, 4, and 8 wt % of graphene with fixed 1 % CuO. There has been a discernible improvement of 146.52 % in the mechanical properties and 18.1 % in electrical performance. This improvement is supported by the FESEM morphological analysis of fractured surfaces. It has been observed that the optimized loading of 8 wt % of Graphene gives the best performance. The strong interfacial interaction between the Graphene/CuO and SR is responsible for the performance gain

CHARACTERIZATION AND COMPARISON OF SOLAR SELECTIVE COATINGS BETWEEN NI-AL AND NI-CO ON ALUMINUM SUBSTRATE

An ideal solar absorber surface coating must have good optical properties like high solar absorptance with minimum solar emittance. Development of new coating is fabricated by embedding metallic particles composed of a nickelaluminium (NiAl) alloy into the black paint as well as solar selective black nickel-cobalt (NiCo) electroplating on aluminium alloys with nickel undercoat is done. Characterization of such solar selective surface coatings are done and compared with commercial black paint. A new and affordable solar selective surface coating having higher solar absorption efficiency with low in-frared emittance compared to the commercial black paint coating used in most ordinary solar water heating systems has been developed. Characterization of coating includes Optical properties studies of coatings, Surface morphology and XRD studies, and solar water heater performance with new coatings