A Trombe wall is a massive Equator-facing wall that is painted dark color in order to absorb thermal energy from incident sunlight and covered with a glass on the outside with an insulating air-gap between the wall and the glaze.
Pros :
The most flexible solar option.
Work in mild climates as well as in extreme cold.
They can even be used to cool a building instead of heating it.
They stop sun drenching.
Reducing glare.
Cons :
Costly to install
It has to be carefully designed
Ensures that the thermal mass wall of suitable thickness to absorb the excess heat.
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