The main objective of this work is to study the heat transfer through an administrative building’s envelope in Errachidia City in Morocco. A numerical simulation based on the finite element method was made to describe the effect of introducing several thermal insulators (air, hemp wool, glass wool, rock wool, and extruded polystyrene) of different thicknesses (5 cm, 10 cm, and 15 cm) on the heat transfer through the building’s envelope under different climatic conditions. For the stationary regime, the summer period was chosen on August 7^th, 2019, at 17 h, while the winter period was opted on January 1^st, 2020, at 7 h. Otherwise, for the transitional regime, the summer period was chosen from August 1^st to 8^th, 2019, and the winter period from January first to 8^th, 2020. The physical model analyzes the temperature variation at the different layers of the wall. It depends on the indoor temperature, the instantaneous climatic conditions of the outdoor air, solar radiations, and the thermal properties of the building’s envelope. The results show that the air gap is a good thermal insulator; it acts as a damper of temperature and heat flux.

中文翻译：

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摩洛哥东南部干旱气候对室内热舒适度的影响

这项工作的主要目标是研究通过摩洛哥埃拉希迪亚市行政大楼围护结构的热传递。基于有限元方法的数值模拟描述了引入不同厚度（5 cm、10 cm和15 cm）的几种绝热体（空气、麻棉、玻璃棉、岩棉和挤塑聚苯乙烯）的效果在不同气候条件下通过建筑物围护结构的热传递。对于静止状态，夏季时段选择在2019年 8 月 7^日的17 点，而冬季时段选择在2020年 1 月 1^日的7 点。否则，对于过渡政权，选择夏季时间为 8 月 1^日至 8^日2019年1月1日至2020年1月8^日冬季。物理模型分析了墙体不同层的温度变化。它取决于室内温度、室外空气的瞬时气候条件、太阳辐射以及建筑物围护结构的热性能。结果表明，气隙是良好的绝热体；它充当温度和热通量的阻尼器。