The wall Waterspout or wall Waterspout-Michel , which was conceived by Professor Felix Trombe and the architect Jacques Michel, is a wall sensor. It is composed of a block of matter with strong inertia (concrete, stone, etc) which accumulates the solar radiation of the day and restores it during the night. In front of this wall, one places a pane to create a Greenhouse effect to heat the air.

One can improve this wall sensor, by increasing the absorption of the storage wall (for example by painting it in black). This wall can also be bored openings to allow the circulation of the hot air.

Starting from the basic concept, one can use technologies of point like double glazings with low thermal emissivity to increase the output of the wall. One can return activates this passive technology by the addition of ventilation motorized on the valves of circulation of air.

Edward Morse patented the concept in 1881 (US Patent 246626), but he was ignored until 1964.

Example of applications

See too

• Bioclimatic
• Well of Provence

External bonds

• Walls sensors and wall waterspout on the site of ADEME
• General diagram of the Wall Waterspout
• File of American research laboratory NREL on the Wall Waterspout