摘要
认为过去关于全面通风排风量在作业场所上下部的分配 ,相关设计规范和技术规定是根据有害物的气体密度来确定的 ,而忽略了有害物气体的允许浓度值。鉴于混合后的气体密度为有效相对密度 ,而不是有害物气体密度 ,它与空气密度相差甚微。因此 。
Considers that the dispersed harmful gas will certainly mixe with a large amount of room air,the mixed gas density is effective relation density but a harmful gas density.The effective relation density value is very similar with air density value,so it seems not necessary to exhaust air from top and bottom at a certain rate.
出处
《建筑热能通风空调》
2001年第2期59-59,共1页
Building Energy & Environment
关键词
全面通风
空气密度
有效相对密度
排风量
分配
general ventilation, air density,effective specific gravity,threshold limit value(TLV)
