Characterization of the Field and Laboratory Emission Cell - FLEC: Flow field and air velocities

被引：40

作者：

Uhde, E ^{[1
]}

Borgschulte, A ^{[1
]}

Salthammer, T ^{[1
]}

机构：

[1] Fraunhofer Inst Holzforsch, Wilhelm Klauditz Inst, D-38108 Braunschweig, Germany

来源：

ATMOSPHERIC ENVIRONMENT | 1998年 / 32卷 / 04期

关键词：

chambers; FLEC; flow field; air velocity; emission rate; VOC;

D O I：

10.1016/S1352-2310(97)00345-2

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The Field and Laboratory Emission Cell (FLEC) has been designed for VOC emission testing of material surfaces. Knowledge about the air flow field in the cell compartment is highly desired, as the air velocity at the sample surface may considerably influence the emission behaviour. A simple mathematical approach of flow theory predicted an unevenly distributed air flow into the FLEC. This could be confirmed by air velocity measurements using a self-constructed hot-wire anemometer. With a total flow of 250 ml min(-1), air velocities measured at the surface ranged from less than or equal to 0.1 to 0.9 cm s(-1). A surface area of very low air velocities was detected in the FLEC centre with a radius of approximate to 20 mm. A VOC emission test using a simulated punctual source yielded different emission rates al different locations in the cell compartment. (C) 1998 Elsevier Science Ltd. All rights reserved.

引用

页码：773 / 781

页数：9

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