A hybrid ventilation system combining both natural and mechanical ventilation has proven very promising in moderating indoor climate, based on its ability to ensure indoor air quality with low energy consumption. The system maintains indoor thermal comfort conditions by switching to mechanical mode whenever natural ventilation is not possible. However, the application of such a system in severe arid climates is still very limited and challenging, and almost half the urban peak load for energy demand is used to supply cooling and air-conditioning in summer. This paper assessed the application of the hybrid ventilation mode for an educational building in a hot, arid climate, with the aim of reducing the building’s energy consumption without compromising the occupants’ thermal comfort. A dynamic simulation was conducted using Integrated Environmental Simulation in a Virtual Environment building energy software, and the outcomes were validated against actual consumption data over one year. The results were then evaluated for indoor thermal comfort and energy reduction and showed the potential of the hybrid system to provide energy savings of 23% across the year. Better energy performance was achieved during the cooler seasons (33.5%) compared to hot (17.1%). When photovoltaic systems were incorporated, by examining different inclination angles and locations for energy savings and carbon emissions (CO₂) reductions, the outcomes proved that photovoltaic south and a 25° tilt angle recorded the maximum energy and minimum CO₂ emissions annually. This integration of hybrid ventilation and photovoltaics reduced the building’s energy consumption from 106.1 MWh to 36.6 MWh, saving almost 85% in total annual energy and cut down the carbon emissions from 55,227 kgCO₂ to 6390 kgCO₂.

结合自然通风和机械通风的混合通风系统已被证明在调节室内气候方面非常有前景，因为它能够以低能耗确保室内空气质量。该系统通过在无法自然通风时切换到机械模式来保持室内热舒适条件。然而，这种系统在严重干旱气候中的应用仍然非常有限和具有挑战性，几乎一半的城市能源需求高峰负荷用于夏季制冷和空调供应。本文评估了混合通风模式在炎热、干旱气候下在教育建筑中的应用，目的是在不影响居住者热舒适度的情况下降低建筑的能源消耗。在虚拟环境建筑能源软件中使用集成环境模拟进行动态模拟，并根据一年多的实际消耗数据验证结果。然后对室内热舒适性和能源减少的结果进行了评估，并显示了混合系统在全年节能 23% 方面的潜力。与炎热季节 (17.1%) 相比，在凉爽季节 (33.5%) 实现了更好的能源性能。当光伏系统被纳入时，通过检查不同的倾斜角度和位置，以实现节能和碳排放（CO 然后对室内热舒适性和能源减少的结果进行了评估，并显示了混合系统在全年节能 23% 方面的潜力。与炎热季节 (17.1%) 相比，在凉爽季节 (33.5%) 实现了更好的能源性能。当光伏系统被纳入时，通过检查不同的倾斜角度和位置，以实现节能和碳排放（CO 然后对室内热舒适性和能源减少的结果进行了评估，并显示了混合系统在全年节能 23% 方面的潜力。与炎热季节 (17.1%) 相比，在凉爽季节 (33.5%) 实现了更好的能源性能。当光伏系统被纳入时，通过检查不同的倾斜角度和位置，以实现节能和碳排放（CO₂ ) 减少，结果证明光伏向南和25°倾斜角记录了每年最大的能量和最小的CO ₂排放量。这种混合通风和光伏的集成将建筑的能源消耗从 106.1 MWh 降低到 36.6 MWh，每年节省近 85% 的总能源，并将碳排放量从 55,227 kgCO _{2 减少}到 6390 kgCO ₂。