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This [[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. | |||
This solar | |||
==The principle== | ==The principle== | ||
A black painted, 150 mm diameter metal tube stands out of the roof, 6 to 8 meters high ; the air inside gets hot and rises creating an airflow which draws cool air into the building, possibly through an [[Evaporative cooler]] | A black painted, 150 mm diameter metal tube stands out of the roof, 6 to 8 meters high; the air inside gets hot and rises creating an airflow which draws cool air into the building, possibly through an [[Evaporative cooler]]. | ||
==Making it== | ==Making it== | ||
In order to have the air swirling the | In order to 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.. | ||
==Alternative design idea== | ==Alternative design idea== | ||
In 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. | In 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. | ||
==External link== | ==External link== | ||
* [http://fr.ekopedia.org/Climatisation_solaire Original article on Ekopedia], in French language but with the drawings. | |||
{{attrib|url=http://fr.ekopedia.org/Climatisation_solaire|author=the Ekopedia community|license=[http://fr.ekopedia.org/Ekopedia:Copyright CC-by-sa 3.0]}} | |||
[[Category:Heating and cooling]] | [[Category:Heating and cooling]] |
Revision as of 00:51, 24 October 2012
This 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.
The principle
A black painted, 150 mm diameter metal tube stands out of the roof, 6 to 8 meters high; the air inside gets hot and rises creating an airflow which draws cool air into the building, possibly through an Evaporative cooler.
Making it
In order to 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..
Alternative design idea
In 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.
External link
- Original article on Ekopedia, in French language but with the drawings.