In France, the Pyrenees (latitude 42 ° N) and Moscow (49 ° N), was developed and tested in several houses a solar heating system Natural circulation original and interesting from the point of view. A concrete wall thickness of 0.30 m south-facing is painted so as to facilitate the absorption of solar radiation (black, blue, orange ...) and covered with glass plates parallel to the wall, from which it is spaced a few inches. The sun heats the surface 
absorbent and the inner tube between the wall and the transparent sheet. It then triggers a convective movement of air through appropriate channels, is made to flow from the lower area of \u200b\u200bthe rooms to be heated in the space between wall and glass, this warms and rises, coming down in living rooms. At sunset, the air circulation is stopped and the stored heat of the wall is slowly lost to the environment be kept at a temperature of comfort during the night. In summer, the cycle can be modified to obtain the cooling building: in fact hot air, dall'intercapedine is sent out and the convective motion draws fresh air from the north side of the house, or the convective motion induced by the solar heat in the cavity is used to draw fresh air from north side of the house. This collection system and solar collection is designed and developed by Professor Michel Trombe and architect in the station for the study of solar energy Pirenei.Il Trombe wall-Michel is an element far more complex than a standard manifold. In fact acts as a collector, accumulator and structural elements of the house.
absorbent and the inner tube between the wall and the transparent sheet. It then triggers a convective movement of air through appropriate channels, is made to flow from the lower area of \u200b\u200bthe rooms to be heated in the space between wall and glass, this warms and rises, coming down in living rooms. At sunset, the air circulation is stopped and the stored heat of the wall is slowly lost to the environment be kept at a temperature of comfort during the night. In summer, the cycle can be modified to obtain the cooling building: in fact hot air, dall'intercapedine is sent out and the convective motion draws fresh air from the north side of the house, or the convective motion induced by the solar heat in the cavity is used to draw fresh air from north side of the house. This collection system and solar collection is designed and developed by Professor Michel Trombe and architect in the station for the study of solar energy Pirenei.Il Trombe wall-Michel is an element far more complex than a standard manifold. In fact acts as a collector, accumulator and structural elements of the house. 
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