Abstract
The purpose of the present study is to elucidate the mechanism of formaldehyde concentration affected by multi-room convection. The building materials have the properties to absorb and emit formaldehyde. In the ventilation between the multiple rooms, concentration may be increased due to the influence of concentration in the preceding room. The concentration is higher in the room on downstream side, and it is considered to be closer to equilibrium concentration. Also, it would be necessary to confirm the equilibrium concentration of the mixed board products (mixed or composite building materials) and the properties such as absorption and emission. In the present study, the ventilation between the multiple rooms is evaluated. Further, it is tried to elucidate the coordination of HBF(Hoetjer-Berge-Fuji) equation on the mixed products and to identify the mechanism of emission, absorption and equilibrium concentration.