Climatic conditions are extreme in some parts of Morocco, with extreme outdoor temperatures. Researchers in the construction sector are focusing more and more on combination applications of NePCMs in buildings. Indeed, as these materials enable passive temperature adjustment, they will contribute to reducing the energy consumption of heating, ventilation, and air conditioning (HVAC) systems. To this end, the effect of using nanoparticles CuO (3%) with PCM RT25 for a melting temperature of 25°C on the hottest day under different climatic conditions in Morocco will be assessed. This research aims to maintain the temperature within the thermal comfort range for occupants by reducing temperature variations and energy consumption, while comparing the effect of climatic conditions for the two seasons of the year (winter and summer) in each zone to determine the effect of NePCM on the building
Ouabouch et al. (2026) studied this question.