Nowadays, new generations of building envelope need to manage the energy exchange between outdoor and indoor environment responsively and save the building energy. A significant amount of solar heat gain in buildings comes through the windows. The transparent envelope also must answer to visual requirements allowing for external vision but guarantying comfort conditions. In this framework, this article aims to test numerically the thermal performance of a new design of multifunctional glazed window combining the most recent technologies used in building envelopes. Five distinct window designs combing phase change material (PCM), vacuum glazing (VG), photovoltaic (PV), and air cavity were numerically tested for hot weather conditions. The proposed window designs slide inside the wall of the building. A comprehensive transient Multiphysics model coupling the thermo-electric model of the PV, melting and solidification model of the PCM, and the heat transfer mechanisms in the vacuum and air gaps are developed. The model is step by step validated with data in the literature. Various PCM types and PCM thickness are investigated. Among the five investigated window designs, the result showed that the window, including the air gap with PV, PCM cavity, and VG, is the optimal design for the indoor air's thermal isolation. Simultaneously, the PCM with a melting point of 35 ^˚C and thickness of 50 mm is the best performance material in a hot arid region in summer at Cairo. The proposed multifunction window generated maximum electrical power intensity of 162 W/m² at received solar radiation of 1000 W/m².

如今，新一代建筑围护结构需要响应式地管理室外和室内环境之间的能量交换并节约建筑能源。建筑物中大量的太阳能热量来自窗户。透明外壳还必须满足视觉要求，允许外部视觉但保证舒适条件。在此框架中，本文旨在通过数值测试结合建筑围护结构中使用的最新技术的多功能玻璃窗新设计的热性能。结合相变材料 (PCM)、真空玻璃 (VG)、光伏 (PV) 和气腔的五种不同的窗户设计在炎热天气条件下进行了数值测试。建议的窗户设计在建筑物的墙壁内滑动。开发了一个综合的瞬态多物理场模型，将 PV 的热电模型、PCM 的熔化和凝固模型以及真空和气隙中的传热机制耦合起来。该模型是通过文献中的数据逐步验证的。研究了各种 PCM 类型和 PCM 厚度。在五个调查的窗户设计中，结果表明，包括与 PV、PCM 腔和 VG 的气隙在内的窗户是室内空气隔热的最佳设计。同时，熔点为 35 在五个调查的窗户设计中，结果表明，包括与 PV、PCM 腔和 VG 的气隙在内的窗户是室内空气隔热的最佳设计。同时，熔点为 35 在五个调查的窗户设计中，结果表明，包括与 PV、PCM 腔和 VG 的气隙在内的窗户是室内空气隔热的最佳设计。同时，熔点为 35^˚C和50毫米的厚度是开罗夏季炎热干旱地区性能最好的材料。生成建议的多功能窗口162瓦/米的最大电功率强度²在1000 W的接收的太阳辐射/米²。