Jamal, Bouchaib ， Boukendil, Mohammed ， El Moutaouakil, Lahcen ， Abdelbaki, Abdelhalim
2025-12-01 JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY 2025 150(卷), 24(期), (20085-20093页)
The roof is the building envelope component most exposed to climatic conditions, making it a major contributor to the overall thermal load in hot regions. Optimizing the thermal performance of hollow block roofs can therefore significantly reduce the energy required for cooling buildings. This study examines the thermal performance of hollow block roofs commonly used in Moroccan construction. A dynamic model accounting for heat transfer modes was used for the analysis. Time lag, decrement factor, and internal surface temperature fluctuations were used to assess the thermal behavior. Additionally, energy consumption comparisons were made between Type A and Type B roofs. The results show that Type B reduces the peak interior surface temperature by 8 degrees C, delays heat transfer from the external environment by about 2 h, and decreases the decrement factor by approximately 33%. Moreover, Type B achieves energy savings of up to 21%, confirming its effectiveness in improving energy efficiency and enhancing thermal comfort in buildings located in hot climates.