Students' performance is negatively influenced by poor indoor environments. In Sudan that is characterised by extreme climate, providing comfortable classrooms is required to improve the educational system that suffers from restricted budgets. To address this issue, the local government in Khartoum, the capital city of Sudan, and the Ministry of Education released a joint project to construct new schools' buildings following one of two unified prototype models. This paper evaluates the impact of a new passive wall system that combines natural ventilation and evaporative cooling on the classrooms' thermal conditions. The wall consists of two brick layers that accommodate a wet porous ceramic layer, and it has two configurations. In the first configuration, the exhausted air is circulated to the system to cool it before ejecting it into the classroom. In the second configuration, the exhausted air is dissipated from the classroom through an outlet located at a wall opposite to the wall that integrates the system. The effectiveness of the system was evaluated via assessing the classrooms’ conditions before and after activating it using EDSL TAS and ANSYS ICEM CFD programmes. The findings revealed considerable reductions in indoor air temperatures from 30.3–44.8 °C before activating the system to 18.9–26.5 °C and 21.3–23.8 °C after activating the system in the first and second configurations, respectively, which concludes the system effectiveness. The wall is environmentally clean as its operation barely consumes active energy, which makes it attractive considering the limited budget allocated for the education sector in Sudan.

室内恶劣的环境会对学生的表现产生负面影响。在气候极端的苏丹，需要提供舒适的教室来改善受预算限制的教育系统。为了解决这个问题，苏丹首都喀土穆的地方政府和教育部发布了一个联合项目，按照两个统一的原型模型之一建造新学校的建筑物。本文评估了将自然通风和蒸发冷却相结合的新型被动墙系统对教室热状况的影响。墙由两块砖组成，可容纳一个湿的多孔陶瓷层，它有两种配置。在第一配置中，排出的空气在排入教室之前先循环至系统以对其进行冷却。在第二配置中，排出的空气通过位于与将系统集成的墙壁相对的墙壁上的出口从教室消散。通过使用EDSL TAS和ANSYS ICEM CFD程序激活教室之前和之后评估教室的条件来评估该系统的有效性。研究结果表明，将室内空气温度从激活系统之前的30.3–44.8°C分别降低到在第一和第二配置下激活系统后的18.9–26.5°C和21.3–23.8°C，这证明了系统的有效性。墙壁是环保的，因为其操作几乎不消耗有功能源，