air change rate

Air change rate was calculated by using CO2 two-parameter build-up method and one-parameter decay technique.

房间的换气次数根据两参数CO2浓度上升法和单参数浓度下降法进行计算。

Introducing equivalent person-density, explores the ultimate equivalent person-density at the largest air change rate the criterion regulated.

引入当量人员密度，提出了规范中换气次数上限适用的当量人员密度限值。

Finally, the determination method of minimum thermal resistance to prevent mould growth is proposed according to internal moisture production rate, air change rate, indoor and outdoor temperature.

最后根据室内产湿率、换气效率及室内外温度条件得出了基于预防霉菌生长的墙体的最小热阻的确定方法。

Analyzes the effects of indoor dust loading and of fresh air rate to the air change rate in turbulent flow clean rooms.

分析了乱流洁净室净化空调设计中室内发尘量和新风比对换气次数的影响。

Especially discusses the ways of choosing a proper air change rate.

讨论了换气次数的正确选取方法。

A reason for this is that RH buffering by materials is feeble and short lived compared with temperature buffering when the air change rate is large.

原因是当空气交换量大时，和热缓冲材料相比湿度缓冲材料的功能较弱，而且寿命不长。

When increasing the air change rate in the underground space, the radon concentration in the air will fall fast.

在较高的氡浓度状态下，室内氡浓度对通风十分敏感，增大地下空间的通风换气率，会使空气氡浓度大幅度的降低。

Under same air change rate, the particle deposition in horizontal air supply is 65% less than that in vertical supply model.

医护人员周围的粒子浓度高于相近换气次数下的垂直流送风方式。手术关键区上的沉降粒子数明显低于垂直送风方式，相近的换气次数下，粒子减少率约为65%。