A survey on annual change of window opening in detached houses a method to monitor open-width of sliding window and the annual characteristics of open-width

The aim of this study is to estimate the influence of indoor air quality upon the dweller's health in detached houses. The indoor air quality influences the dwellers health continuously for log times. Especially the long-term exposure of chemical compounds increase the risk of multiple chemical sensitivity. Therefore it is very important to know the annual characteristics of indoor air quality. The annual change of indoor quality depends on the annual change of emission and that of ventilation. The ventilation rate depends on not only the ventilation system but also the dweller's habit of operating windows. The window operation is influenced by not only indoor conditions but also the dwellers living style, the environment of circumstance and the other factors. The sliding windows were used in common detached houses. The dwellers can adjust the open wide of sliding window considering any factors, for example indoor thermal condition, air quality sound, and these outdoor conditions. Therefore the state of the open width is thought to be varied and the prediction is not easy. In order to know the annual characteristics of indoor air quality and to predict the long term exposure of pollutant, the following studies are carried out. An instrument to measure the open-width of sliding window was developed and the open-widths were measured in six detached houses through a year. The results are the followings. 1. An instrument using mechanical system can measure open width of sliding window continuously through a year. 2. The open-width depends on not only indoor temperature but also the daily dweller's schedule ant the other factors. 3. The annual reaction of open-width to the indoor temperature is behind when the room is not cooled normally. 4. When the indoor temperature is high in summer, the room is cooled normally and the open-width is large when the room is not cooled. 5. When the indoor temperature is not high in summer, the room is not cooled normally and the windows open for long time and open-width is operated from middle to large when the room is not cooled. In this study the basic annual characteristics of operating windows became clear. The survey on the window opening in more houses, the modeling of window opening and the prediction of annual indoor air quality are necessary in future.