Energy performance of earthen wall office buildings in equatorial and tropical climates is investigated using a Simulink model and EnergyPlus software. The main aim of this numerical simulation study is to quantify the magnitude of the effect of adding a fibrous material or a stabiliser in the compressed earth block on the energy requirement or thermal comfort of a building taking into account different operating modes of the cooling system (continuous, intermittent and no cooling) in some climatic conditions in Cameroon. For continuous air-conditioned space and intermittent air-conditioned space, the assessment parameters are cooling load and its peak, while it is thermal comfort index for no air-conditioned space. Thermophysical properties of the used earthen materials were previously measured. The results show that the mixing of sawdust or pozzolan with earth material improves its performances for continuously and intermittent cooling space case, and degrades it for non-air-conditioning space case. It can provide a reduction in peak sensible cooling rate by up to 6.3%, 7% and 10% in Yaoundé, Douala and Garoua, respectively. The thermal comfort index obtained with earth block wall can be smaller than that of earth block with 8% of sawdust wall by up to 10.41% and 13.03% (in August) in Yaoundé and Douala, respectively.

中文翻译：

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赤道和热带气候下土质建筑墙体的能源性能：以喀麦隆为例

使用Simulink模型和EnergyPlus软件研究了在赤道和热带气候下土墙办公楼的能源性能。这项数值模拟研究的主要目的是，考虑到冷却系统的不同运行模式，量化在压缩土块中添加纤维材料或稳定剂对建筑物的能量需求或热舒适性的影响的大小（喀麦隆在某些气候条件下连续，间歇且无冷却）。对于连续的空调空间和间断的空调空间，评估参数为冷却负荷及其峰值，而对于无空调空间，评估参数为热舒适指数。预先测量了用过的土料的热物理性质。结果表明，木屑或火山灰与泥土的混合可提高其在连续和间歇冷却空间情况下的性能，而在非空调空间情况下会降低其性能。它可以使Yaoundé，Douala和Garoua的峰值显着冷却速率分别降低6.3％，7％和10％。在雅温得和杜阿拉，用挡土墙获得的热舒适指数可以比锯木屑墙8％的挡土墙的热舒适指数分别低10.41％和13.03％（8月）。