Abstract
The air infiltration of a detached wooden house which was regarded as a single-room was measured under the various conditions of indoor-outdoor temperature difference and outdoor wind speed. Also, air infiltration was calculated based on the airtightness of the house measured, using both the Lawrence Berkeley Laboratory (LBL) model and the network method. The network method includes two models. One was a single-room model and the other was a two-room model which involved the area between a room and the outside walls, for example, the space in the attic and inside the walls. As a result of the comparison between the calculations and measurements, the values calculated by the LBL model were more than two times the values measured. Also, the values calculated by the network method for a single-room model were one to two times the values measured. However, the values calculated by the network method for the two-room model were 0.7 to 1.5 times the values measured. It is reasonable, therefore, to conclude that, for the houses with a relatively high ratio of leakage area, which passed through the space (in the attic and the inside walls), the effect of such space on air infiltration should also be considered in the calculation of a single-room air infiltration.
