Measurement of natural ventilation for residential building in Guangzhou

It is very difficult to measure continuously variable wind filed because of pulsating and multidirectional characteristic of natural ventilation. This study has focused on the continuous record on the indoor and windows wind speed to try to test continuously variable wind filed, with the universal breeze probe and data acquisition equipment. It will benefit for the research of natural ventilation field measurement. The effect of natural ventilation is the best in the bedroom 1 during the four test bedrooms, window of this bedroom towards the prevailing wind direction. So we should better design the building openings toward the local prevailing wind direction, in order to use natural ventilation frequently for energy saving. While natural ventilation effect was poor in the room with window open and bedroom door closed. Some effective structure measures should be adopted in such a poor natural ventilation room for energy efficient.