Study on measurement and design strategy of residential room natural ventilation in calm wind climate zone -- a case study of household in chengdu

It is found via the analysis of the meteorological data in Chengdu that the number of annual average calm wind days is more than 240. In the non-calm wind time, the dominant wind direction is not obvious, while the annual average wind speed is about 1.0 m/s. In consequence, problems arise as to indoor ventilation in residential buildings without mechanical ventilation in this climate zone and the way how local residential wind has adapted and improved natural ventilation for a long time. In this paper, the state of indoor ventilation in this zone is studied by measuring the concentration of carbon dioxide in the house for a long time. And the long-term adaptive improvement strategy of local residents to the ventilation of residential buildings in calm climate zone is investigated. So are strategies and experiences of local residents in improving natural ventilation in residential buildings.