Research On The Emission Characteristics Of Indoor Volatile Organic Compounds Under Different Heating Modes

With the continuous development of economy and society,the office environment is improving day by day,and a large number of luxury fittings are emerging.Building decoration materials,paints and adhesives,etc.continuously release various volatile organic compounds into the air.They can cause great damage to the human respiratory system,nervous system and cardiovascular system,and even cause cancer,which is the main cause of sick building syndrome.This issue has received more and more attention from all walks of life,and its research has also been rapidly and steadily moving forward.Therefore,it is necessary to study the indoor VOC pollution.In order to understand the distribution rules of indoor VOCs,this article uses experimental research and theoretical analysis methods to discuss the distribution and distribution of VOCs under different heating methods,design and operation for indoor VOCs control,reduce the level of indoor VOCs,and ensure healthy work.The environment provides the necessary basis.In this paper,we first use the experimental platform located in the experimental building of Chongqing University City Ring to carry out experimental research.The distribution and distribution of indoor VOCs under the three types of end of fan coil heating end,capillary ceiling radiant heating end and floor water coil heating end Characteristics were analyzed.The analysis of the experimental results shows that in the form of natural emissions,indoor VOCs are difficult to discharge outdoors,and indoor TVOC concentration is extremely high.Regardless of the heating method,VOCs can be emitted rapidly,and the peak concentration can be reached in time.Efficient discharge from the interior;radiant heating is more conducive to convection heating;for this articleFinally,the influence of different heating and ventilation modes on indoor TVOC concentration distribution characteristics is simulated by FLUENT software.The simulation results show that the heating mode has an important influence on the concentration distribution of TVOC.The turbulence intensity of the fan coil heating room is high,the body blower is strong,the TVOC concentration in the area near the tuyere is low,and there is a large stratification.The velocity field of the whole room of the ceiling radiant heating is smooth,and presents a laminar or low turbulence state.The overall TVOC concentration of the room is low,the floor heating TVOC stratification is more serious,the vertical height concentration decreases,the TVOC concentration in the working area is low,the high TVOC concentration area is concentrated in the upper room space,the TVOC concentration level of the ceiling radiation combined with the mixed ventilation area is low,and there is no obvious stratification phenomenon of floor radiation combined displacement ventilation.It is conducive to the diffusion of pollutants,but there is a clear phenomenon of stratification.