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Solar XXI building: Proof of concept or a concept to be proved?

机译：XXI太阳能建筑：概念证明还是需要证明的概念？

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摘要

Solar XXI building is a low energy office building where passive and active solar strategies have been applied to reduce the use of energy for heating, cooling and lighting, combining also an extensive photovoltaic facade for electricity production. Solar XXI opened in 2006 and is considered a high efficient building, close to a net zero energy building (NZEB), where the difference between the energy consumed and that produced is l/10th of the energy consumed by a Portuguese standard new office building. Its design includes many energy efficiency concepts, such as a high insulated envelope, south sun exposure, windows external shading, photovoltaic panels heat recovery, ground-cooling system, daylighting, stack effect and cross ventilation. The solar gains of the windows and the effectiveness of shading devices were evaluated in order to correlate solar radiation, external and indoor air temperatures. It was also verified that amplitude-dampening of ground-cooled air ranged between 5 and 8 °C, following the trend of the analytical solution for heat diffusion of a cylindrical air/soil heat-exchanger.
机译：XXI太阳能大楼是一栋低能耗的办公大楼，在该大楼中，已采用被动和主动太阳能策略来减少用于供暖，制冷和照明的能源使用量，同时还结合了广泛的光伏立面用于发电。 XXI太阳能大楼于2006年投入使用，被认为是高效建筑，接近零能耗净建筑（NZEB），其能耗与所产生能耗之间的差额是葡萄牙标准新办公楼能耗的十分之一。其设计包括许多能效概念，例如高绝缘围护结构，朝南的阳光照射，窗户外部遮阳，光伏面板的热回收，地面冷却系统，日光，烟囱效应和交叉通风。为了使太阳辐射，外部和室内空气温度相关联，评估了窗户的日照增益和遮阳装置的有效性。还证实了，遵循圆柱形空气/土壤热交换器的热扩散分析解决方案的趋势，地冷空气的振幅衰减范围为5至8°C。

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