用示踪气体稀释法测量房间换气速度

Measurement of Air Exchanging Rate in Rooms Using Diluted Tracer Gas.

本文介绍了用示踪气体稀释法监测大亚湾核电站附近六类居室换气速度的实验。本法用SF_6作示踪气,气相色谱分析浓度,以示踪气体浓度下降和时间关系,求出换气次数和换气速度。结果表明,六类民房换气速度都较大,换气次数取值老式民房为1.0h^(-1)和2.8h^(-1);新式民房为2.5h^(-1);单身集体宿舍为0.60h^(-1);职工公寓为1.9h^(-1);招待所房间为0.96h^(-1)。

In this paper, an attempt has been made in measuring air exchanging rates in the rooms of some different buildings near Dayawan Nuclear Power Station in October of 1988. The diluted tracer gas (SF6) technique was used. SF6 concentration C(t) at time t in the measured buildirg is described asThe exchanging rate Q is equal to y·λ in which v is the volume of room or building and λ is air exchanging frequency per hour. In the measurement, SF6 concentrations were analyzed by using a portable gas chromatagraph. The λ values were taken from 0.6h-1 to 2.8h-1 in accordance with different types of rooms.