Performance Characteristic Analysis of Metallic and Non-Metallic Oxide Nanofluids for a Compound Parabolic Collector: Improvement of Renewable Energy Technologies in Buildings

The building sector is targeting net-zero emissions through the integration of renewable energy technologies, especially for space cooling and heating applications. In this regard, use solar thermal concentrating collectors vital importance. performance these increases by using an efficient fluid such as a nanofluid due to their high conductivity. This research addresses preparation, stability analysis, characterisation metallic non-metallic oxide nanofluids experimental analysis in compound parabolic collector (CPC) system. Five different combinations are used with volumetric concentrations (0.025%, 0.05%, 0.075%) including multi-wall carbon nanotube water (MWCNT–H2O), ethylene glycol (MWCNT–EG), aluminium (Al2O3–H2O), (Al2O3–EG), magnesium (MgO–EG). prepared characterised terms conductivity viscosity. Detailed experimentation performed investigate CPC system integrated nanofluids. results obtained from detailed MWCNT–H2O showed that have 37.17% better than distilled primary fluid, MWCNT–EG has demonstrated increase viscosity 8.5% compared (EG). revealed efficiency increased 33% water. Meanwhile, was 24.9% EG. Moreover, comparative among also performed, i.e., Al2O3–H2O, Al2O3–EG, MgO–EG. each case, recorded, which greater base percentages 29.4%, 22.29%, 23.1%, respectively. 7.7%. From results, it can be concluded best any other combination