AT_solar_updraft_tower 3D模型

3D model of the AT solar updraft tower. Cold air enters via the two wooden pipes at the bottom and is heated by the sun. This is possible as the front of the building is a transparent plastic.At the back, there is a section of plastic that is non-transparent, the back itself is closed by a vertical wall. There is however a pile of soil placed here behind the plastic wall to improve the thermal insulation. The small black cone at the bottom improves the airflow, the chamber is painted black on the inside to increase radiation from the sun. The airflow turns a rotor on which a set of (4) CP-bladed propellers are placed. The weight of the rotor is held by a metal support frame, and so does not rest on the plastic. A electricly switched gearbox and alternator are present to generate electricity. A damper is present at the top allowing to increase/decrease the airflow (together with the gearbox, this allows maximum efficiency). The damper is regulated by the printed circuit board via a solenoid. The PCB also controls the gearbox. See the "Purchasing_the_models" link at appropedia's AT_CAD_Team for additional information on the model