Performance Evaluation of Cleanrooms Against Biocontamination
An evaluation system of biocontamination control shall be established, implemented and maintained within cleanrooms, especially biological cleanrooms. Generally, these this evaluation is performed with control of particulate matter, e.g. DEHS (diethyl-hexyl-sebacate), DOP (di-octyl-phthalate), PSL (Poly-Styrol Latex), to predict the biocontamination control effect of cleanrooms. However, no data have been available to evaluate systematically bioaerosol characteristics in relationship to particle counts in different classes of cleanrooms. In addition, although the filtration of airborne particulates has been studied extensively, the filtration of airborne microorganisms has not been specifically addressed by theory and has seen limited empirical study. Thus, particle counting should, of course, not take the place of microorganism measurements. A evaluation system of biocontamination control within cleanrooms is given, and then challenged with a model cleanroom laboratory. Results show that performance evaluation of biocontamination control within cleanrooms should be conducted with bioaerosol, which can directly reflect biocontamination control ability of cleanrooms, instead of particulate matter aerosol. Case study results indicate that air distribution with ceiling supply and downside exhaust air distribution mode has better biocontamination control ability than that with ceiling supply and exhaust air distribution in cleanrooms.
Biocontamination control Cleanroom Ceiling supply and ezhaust air distribution Ceiling supply and downside ezhaust air distribution Sampling
Guoqing Cao Yizhao Zhang
Institute of Building Environment and Energy Efficiency China Academy of Building Research Beijing,China
国际会议
北京
英文
1-4
2009-06-11（万方平台首次上网日期，不代表论文的发表时间）