住宅換気用タービンベンチレ一夕ーの自然換気性能に関する研究

摘要

タービンベンチレーターは外気風により回転し、その回転によrnり屋根裏空間あるいは室内空間の換気を行う自然換気システムとしrnて1910年代にヨーロッパで開発されたと言われているり。当時は設rn置場所が屋根に限定され、電動換気扇に比べて外気風速の変動によりrn安定した換気量が得られないことに加え、その換気性能が明確でないrnことから広く普及はしなかった。%This study examined the natural ventilation performance of a turbine ventilator used for the attic or the room ventilation in South-east Asian houses by the experiment. The turbine ventilator began to rotate by the outdoor wind velocity more than 0.7m/s, and the ventilation rate increased with outdoor wind velocity, but the countercurrent was observed from the turbine ventilator to the ventilation object space when the outdoor wind velocity was under 0.7m/s or the turbine ventilator was fixed. If the opening size of ventilation object space became big, the ventilation rate increased with outdoor wind velocity, but the ventilation rate did not increase even if outdoor wind velocity increased when it was more than a certain size. When the turbine ventilator was separated from an obstacle more than 1.7m, it did not affect ventilation rate regardless of the position of the obstacle.