Emission behavior of formaldehyde and TVOC from engineering floor under heating and Air Circulation System


Formaldehyde and volatile organic compounds (VOC) in adhesives, floors and floors are measured using desiccants, 20-L chambers and field and laboratory emission chambers (FLEC) . The floor using adhesive is similar to the floor used in construction. It is used in floor heating system and air circulation system. The floor surface temperature is set at 20 °C, 26 °C and 32 °C. When the dryer was used, the formaldehyde release rate from the floor was the highest at 32 °C and decreased with time. The use of 20-L gas chambers and Freon has a similar tendency to release formaldehyde and Aldehydes from the samples. The emission trends of vocs from 20-L combustors and Freon combustors were similar. The release rate of Formaldehyde and TVOC was determined by FLEC, which was higher than that by 20-L chamber method. The main floor emissions of benzene, toluene, ethylbenzene, styrene, xylene and some unknown VOC. There is a strong correlation between formaldehyde and TVOC emissions in 20-L chambers and Freon. Samples using floor heating systems showed higher levels of formaldehyde emissions than those using air circulation systems. The TVOC emission levels of samples using air circulation systems were higher than those using floor heating systems.