- The measurement of surface mass transfer coefficients in a standard FLEC

Full abstract

Publisher Summary Field and laboratory emission chamber (FLEC) is becoming a standard method to characterize pollutant emissions from building materials. This chapter examines the surface convective mass transfer coefficients in a standard FLEC. A cell employed for examination is composed of two parts—cap and lower cavity. The deepness of the lower cavity is 10mm. When testing, the material is placed on the bottom surface of the lower cavity and becomes an integral part of the emission cell. To investigate the mean and local mass transfer coefficients at different FLEC radius, five glass discs with thickness of 10mm and diameters ranging from 130 to 148mm, are prepared. In each test, a disc is placed onto the bottom surface and distilled water is filled in the space between the cell wall and the disc. The chapter finally presents experimentally obtained mean Sherwood numbers with different radius glass discs.