一种干建材有机挥发物散发的新解析模型

A New Analytical Model for VOCs Emitted from Dry Building Materials

建立了一种干建材有机挥发物(VOCs)散发的新解析模型.本模型考虑了室内VOCs初始浓度及小室进口VOCs浓度不为0的情形,且解的形式为完全解析解,无需迭代,更具普适意义.模型结果与已知实验结果及离散解吻合很好.本模型可用于3种情况:一是计算某通风条件下小室中的VOCs浓度的变化;二是了解建材本身散发特性,计算其VOCs散发量;三是在已知建材情况及所允许VOCs浓度的基础下,计算通风时间或通风量.

A new analytical model for VOCs emission was presented.Compared with other models,it takes into account the situation in which the initial concentrations of VOCs in the room and the inlet concentration are not zero.The results are in good agreement with the experiment results and the discrete solution of equations.Moreover,the form of the solution is completely analytical,so it can be calculated without iteration.Therefore,this model can be used more widely.Finally,this model can be used in three ways： first,we can calculate the concentration of VOCs in a room;second,we can calculate the amount of VOCs emitted from building materials;and third,we can also calculate the ventilation time or ventilation rate with the given building materials and the concentration of VOCs in a room.This provides the basis for the design of air-conditioning systems.