多因素影响下的转轮热湿及VOC耦合吸附特性研究

Study on Thermo-moisture and VOC Coupling Adsorption Characteristics of Runner under the Influence of Multiple Factors

目的研究不同影响因素下转轮的热湿和挥发性有机化合物(VOC)耦合吸附净化的效果,以期实现同时对室内空气进行净化和除湿.方法建立热湿及VOC耦合吸附数学模型,利用VB编制程序,对转轮热湿及VOC耦合吸附特性及各因素影响规律进行仿真模拟.结果水分脱附的效果随着被吸附空气进口湿度的增大而提升,但是被吸附空气进口湿度的变化对于甲苯的吸附净化和脱附没有影响;被吸附空气进口处的温度越高,对水分和VOC的吸附和再生越有不利影响;在不同的被吸附空气的甲苯质量浓度条件下,甲苯自身的吸附和脱附效果会产生相应的变化;再生空气进口处的湿度有一定程度增大时,水分的脱附会受到一定的影响,不利于空气的除湿.但同样情况下的再生空气,对甲苯的吸附和脱附有明显的促进作用;此外,如果增加再生空气进口处的温度值,对于空气中水分和VOC的吸附和脱附有明显促进作用.结论除湿转轮可以降低室内空气湿度,同时对VOC也有很好的净化能力.转轮热湿及VOC的耦合吸附可以提高室内的空气品质.

In order to achieve simultaneous indoor air purification and dehumidification,the thermal wet and VOC coupled adsorption purification performance of the runner was studied.A mathematical model of coupled adsorption of heat,moisture and VOC was established.The coupled adsorption characteristics for heat and moisture of runner,VOC,and the influence law of each factor were simulated by VB program.The effect of water desorption increases with the increase of the humidity of the adsorbed air inlet,but the change of the humidity of the adsorbed air inlet has no effect on the adsorption purification and desorption of toluene.The higher the air inlet temperature after treatment,the more adversely affects the adsorption and regeneration of water and VOC.The adsorption and desorption effect of toluene will change under different mass concentration of toluene in the adsorbed air.When the humidity at the inlet of regeneration air increases to a certain extent,the desorption of water will be affected,which is not conducive to the dehumidification of air and is obviously promoted to the adsorption and desorption of toluene;In addition,if the temperature value at the inlet of regeneration air is increased,the absorption and removal of moisture and VOC in the air will be obviously promoted.So the dehumidification wheel can reduce the indoor air humidity,at the same time,it has a good purification capacity for VOC.The coupling adsorption of wheel heat and humidity and VOC can improve the indoor air quality.