Abstract This paper investigates the potential use of natural ventilation strategies to reduce the energy demand for cooling and mechanical ventilation for high-rise buildings in summer. A 21-storey office building was selected to represent a mechanically ventilated high-rise design in temperate climates. Six natural ventilation scenarios were developed for the base design and the CFD package in DesignBuilder was used to predict their flow pattern under two summer conditions. Afterwards, the Operative temperature and the total fresh air changes per hour were calculated with EnergyPlus and were compared accordingly with European comfort standards. The percentage of discomfort hours indicates when a natural ventilation system would need active cooling or mechanical ventilation. Natural ventilation strategies can provide comfort conditions for up to 90% of the occupancy time in summer and therefore can save a significant amount of energy that is generally needed for the operation of traditional mechanical ventilation and air-conditioning systems.

中文翻译：

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高层建筑节能的夏季自然通风策略：以荷兰为例

摘要 本文研究了自然通风策略的潜在用途，以减少夏季高层建筑对冷却和机械通风的能源需求。选择了一座 21 层的办公楼来代表温带气候下的机械通风高层设计。为基础设计开发了六个自然通风场景，并使用 DesignBuilder 中的 CFD 包来预测它们在两个夏季条件下的流动模式。然后，使用 EnergyPlus 计算运行温度和每小时总新鲜空气变化量，并与欧洲舒适度标准进行相应的比较。不适时间百分比表明自然通风系统何时需要主动冷却或机械通风。