期刊
BUILDING AND ENVIRONMENT
卷 81, 期 -, 页码 81-91出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.buildenv.2014.05.031
关键词
Infective-aseptic room contamination; Differential pressurization; Door operation effect; Dirty air transfer
Today it is common practice to try and obtain airborne contamination control through pressurization-depressurization areas. Moreover, there is some qualitative evidence that turbulence induced by the operation of a door between different pressure areas, could overcome the differential pressurization effect, and cause a pouring effect between zones, and consequently a contamination. The paper investigates the described matter through an experimental setup, with a scale physical model. Obtained results confirm that door operation is able to produce a dirty air transfer in the clean room, and that transfer entity is almost independent from differential pressure and flow rate imbalance, at least for the experimentally tested values, while it appears strongly related to air volume displaced in the door opening operation, and has the same order of magnitude of it. (C) 2014 Elsevier Ltd. All rights reserved.
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