Study on Convective Mass Transfer of VOCs Emission from Building Materials of Small Test Chamber AD-FLOW

摘要

The mass transfer coefficient is an important parameter in the test chamber method. The mass transfer coefficient reduced vapor of surface of testing material in 20L small test chamber ADPAC is 2 approx 3m/h that is smaller than it of JIS and do not correspond to an actual condition in the room. AD-FLOW which is put on airflow control unit on the bottom of 20L small test chamber ADPAC is suggested to be fixed airflow of surface of testing material. In this paper, we examine flow field in AD-FLOW and suggest how to control wind velocity from surface of testing material to correspond the mass transfer coefficient in the room. And we study how the mass transfer coefficient influence emission character by analyzing diffusion field.