Effect of resilient architecture in an ancient windmill in the Sistan region on natural ventilation enhancement

Abstract

Over centuries different elements have been developed in architectures for ensuring adequate natural ventilation in residential units. This study assesses the different components of an ancient windmill in Sistan, Iran, on the structure's indoor air quality (IAQ) enhancement. Several climatic scenarios have been defined by the wind analysis of Sistan meteorological data and analyzed by CFD. The site measurements confirm the accuracy of the simulation results. In the windmill, two deflectors facing the prevailing wind are the significant elements which, in addition to directing wind toward the entrance, could form vortices near the east and west openings leading to suction ventilation. Alteration of the wind speed and angle from 10 to 15 m/s and 30° to 17° would increase the air change per hour (ACH) by 150% and 110%, respectively. Meanwhile, the ACHs were higher than the ASHRAE desired level (ACH > 0.35).

Principle of building heat storage and its design parameters

“…14~17] , 而在隔热设计时, 轻质材 料的升温隔热原理 [18] 也能够实现对室外热量的阻隔. , 结合开小窗、设置捕风塔和导 风结构等措施 [24,25] , 实现建筑部件蓄冷与夜间通风的 耦合, 达到调控室内热环境、改善人体舒适度的效果.…”

“…"passive house" [27] . 在此背景下, 作为应对波动气候条 件的利器, 建筑蓄热作用受到人们的青睐, 对建筑通 风 [24,28] 、太阳房 [29~32] 、遮阳、蓄热体 [33,34] 、保温等设 计措施的科学研究接踵而至.…”