12/17/2023 0 Comments Water tower building![]() Windcatchers vary dramatically in shape, including height, cross-sectional area, and internal sub-divisions and filters. The "place of invention" of windcatchers is nonetheless intensely disputed Egypt, Iran, and the United Arab Emirates all claim it. A simple, widespread idea, there is evidence that windcatchers have been in use for many millennia, and no clear evidence that they were not used into prehistory. Windcatchers of varying designs are widely used in North Africa, West Asia, and India. Windcatchers rely on local weather and microclimate conditions, and not all techniques will work everywhere local factors must be taken into account in design. Unlike powered air-conditioning and fans, windcatchers are silent and continue to function when the electrical grid power fails (a particular concern in places where grid power is unreliable and expensive, such as India). Generally, the cost of construction for a windcatcher-ventilated building is less than that of a similar building with conventional heating, ventilation, and air conditioning (HVAC) systems. Neglected by modern architects in the latter half of the 20th century, the early 21st century saw them used again to increase ventilation and cut power demand for air-conditioning. ![]() Despite the name, windcatchers can also function without wind. ![]() Windcatchers come in various designs, depending on whether local prevailing winds are unidirectional, bidirectional, or multidirectional, on how they change with altitude, on the daily temperature cycle, on humidity, and on how much dust needs to be removed. Architectural element for creating a draftĪn ab anbar (water reservoir) with windcatchers (openings near the top of the towers) in the central desert city of Yazd, Iran Aghazadeh Mansion in Abarkooh, Iran, has an elaborate 18-m windtower with two levels of openings, plus some smaller windtowersĪ windcatcher, wind tower, or wind scoop ( Persian: بادگیر) is a traditional architectural element used to create cross ventilation and passive cooling in buildings. ![]()
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