In general, a double-skin façade has been used to reduce energy consumption as well as to improve thermal performance in buildings as a buffer space between indoors and outdoors. The goal of this study is to undertake pre-normative research to provide information for developing a comprehensive double-skin façade system under the climatic condition in Saudi Arabia. To pursue this goal, the characteristics associated with the double-skin façade system are identified. In addition, the impact of various configurations on the thermal performance of the double-skin façades is evaluated under the weather situation in Saudi Arabia. Computational double-skin façade models are created by computational fluid dnamics simulation to assess the thermal performance of the various configurations such as cavity geometry and the use of a shading device. As a result, the variation of the opening size has a significant impact on the temperature in the cavity of the double-skin façade. For the air velocity in the cavity, the variation of the opening size and cavity depth is less sensitive. Moreover, the use of a shading device has an impact on the temperature drop in the cavity of the double-skin façade.

Practical application: Generally, many studies have investigated the efficiency of double-skin façade applications due to its beneficial aspects. However, a few buildings have adopted double-skin façades to their envelopes. With a substantial growing demand for building industry in Saudi Arabia, double-skin façade applications to building design can be a solution for reducing building energy consumption. The present study investigates the thermal performance of double-skin façades under hot climates in Saudi Arabia and it can provide information for building stakeholders to develop proper double-skin façade systems

通常，双层玻璃幕墙已被用于减少能源消耗并改善建筑物的热性能，作为室内和室外之间的缓冲空间。这项研究的目的是进行规范前的研究，以便为在沙特阿拉伯的气候条件下开发一个综合的双层皮肤立面系统提供信息。为了实现这一目标，需要确定与双层外墙系统相关的特征。此外，在沙特阿拉伯的天气情况下，评估了各种配置对双层外墙热性能的影响。计算性双层玻璃幕墙模型是通过计算流体动力学仿真创建的，以评估各种结构（如型腔几何形状和使用遮蔽设备）的热性能。结果是，开口尺寸的变化对双层外墙内腔的温度有重要影响。对于空腔中的空气速度，开口尺寸和空腔深度的变化不太敏感。此外，遮光装置的使用对双层立面的空腔中的温度下降有影响。

实际应用：通常，由于其有益的方面，许多研究已经研究了双层外墙应用的效率。但是，一些建筑物的外壳采用了双层皮肤立面。随着沙特阿拉伯对建筑业的需求不断增长，在建筑设计中使用双层外墙可以成为减少建筑能耗的解决方案。本研究调查了沙特阿拉伯炎热气候下双层外立面的热性能，它可以为建筑相关方提供信息，以开发合适的双层外立面系统