{"id":13676,"key":"Cheap_solar_chimney","title":"Cheap solar chimney","latest":{"id":1186887,"timestamp":"2025-09-18T17:33:34Z"},"content_model":"wikitext","license":{"url":"https://www.appropedia.org/Appropedia:Copyrights","title":"CC-BY-SA-4.0"},"source":"[[File:Clim solaire.gif|thumb]]\n\n{{Project data\n| authors = The Ekopedia Community\n| links = https://www.ekopedia.fr/wiki/Climatisation_solaire\n}}\n\nThis [[solar chimney]] can be made with low-cost materials and a little labor. It has no moving parts. The sunnier the day, the more effective it is.\n\n== The principle ==\n\nA black painted, 150 mm diameter metal tube stands out of the roof, 6 to 8 meters high; the air inside gets hot and rises to create an airflow which draws cool air into the building, possibly through an [[Evaporative cooler]].\n\n== Making it ==\n\nTo have the air swirling (to improve heat transfer between the air and the pipe) you also need a slotted cylinder 200-300 mm in diameter, welded to the bottom of the black tube. The slots must be vertical and have their rims bent inwards so the air enters the chimney with a circular motion.\n\n== Alternative design idea ==\n\nIn the [[Hexayurt]], the aspiration device could be used alone, with a wet cloth fitted on an air inlet near the ground, using the evaporation to cool and moisten the incoming air.\n\n== External link ==\n\n* [https://www.appropedia.org/Coefficient_of_performance Original article on Ekopedia], in French language but with the drawings.\n\n{{Page data\n| keywords = Heating and cooling\n| ported-from = https://www.ekopedia.fr/wiki/Climatisation_solaire\n| license = CC-BY-SA-3.0\n| organizations = Ekopedia\n| description = The Charcoal Cooler keeps food fresh in hot places. Appropedia explains how it works using simple, natural materials.\n}}\n\n[[Category:Heating and cooling]]"}