Research on airflow control model of ⅡB2 Bio-safety Cabinet in high level bio-safety laboratory
By Liang Lei, FengXin, Zhang Chandong, Cao Guoqing, Guan Yuntao
Abstract Statistics and analysis the air control models of 79 Bio-safety Cabinets in 22 (A)BSL-3 or BSL-4 Labs. Introduces the control mode and possible problems of "supply variable and exhaustconstant" ,"supply constant and exhaust variable", and "supply variable (Bistability) and exhaust variable" models, and put forward some solutions. Discuss and empirically studies "supply constant and exhaust variable for the system, meanwhile the air discharge between bio-safety cabinet and rooms witching equivalently " model. based on the analyses, point out that this model is more flexible and applicable.
KeywordsⅡB2 Bio-safety Cabinet, bio-safety laboratory, pressure reversal, variable air volume, constant air volume