jaue2016074: Study on Airtight Performance of Dwelling Units in Newly Built Apartment Buildings

Abstract

In recent years, air leakage area in the envelope of detached houses and apartment buildings become smaller due to policy of energy conservation promoted by national government in Japan. On the other hand, as the airtight performance of houses increases, some problems arising from indoor-outdoor air differential pressureof houses, especially dwelling units in apartment buildings, are happening. In order to make the air pressure difference appropriate, it is important to design sufficient size and adequate number of air intakes of outdoor air. Accordingly, it is considered that accurate airtight performance of the houses should be known. In this study, airtight performance measurement was carried out to clarify the airtight performance of the dwelling units in newly two built apartment buildings located in Tokyo. The one of the buildings (A-apartment) is a high-rise apartment which has internal corridor. Another one (B-apartment) is a typical apartment which has outside corridor. As a result, the value of the equivalent leakage area per the floor area (C-value) of the dwelling unit of A-apartment was about 0.36 cm2/m2 and the C-value of B-apartment was about 0.16 to 0.22 cm2/m2.