Thermal evaluation of a room coated by thin urethane nanocomposite layer coating for energy-saving efficiency in building applications

Today, it is common to use thin-layer nanocomposite coatings as insulation reduce heat loss through building walls. One of the important advantages these preventing energy a thermal barrier in low thicknesses and with high efficiency. Investigations on saving coated buildings are often practiced using numerical experimental approaches. In this study, simulation evaluation consisting modification nanoparticles preparation powder coating nanocomposite, used study effects polyurethane containing nano Al2O3 ZrO2 both sides walls sample room temperature distribution transfer. For purpose, three-dimensional enclosure was assumed having radiant cooling panel, which modeled under various features walls' interior exterior coating. To determine flow fields, governing equations that include continuity, momentum, turbulence, equations, coupled buoyancy term, have been solved Fluent software. The SIMPLE algorithm accommodate pressure-velocity coupling, k-ε model for turbulence modeling, Boussinesq approximation term DO radiation simulation, employed. results thermography samples showed reduction zirconium oxide compared aluminum had better performance lowest observed 3% oxide. Numerical studies thin layer reduces consumption by 4% 13%, respectively, pure acrylic paints.