バイオロジカルクリーンルームにおける換気設備の圧力解析手法

概要

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For preventing contamination, precise control of air pressure in rooms is important for biological clean rooms. And ventilation facilities need a function to control air pressure. To design air pressure control systems of ventilation facilities appopriately, an analytical method that can predict the change of air pressure in the rooms is demanded. In this paper, an analytical method of air pressure for ventilation systems is described. This method is baed on the Volume-Junction Method that is used for analysis of one-dimensional pipe flow. In ventilation facilities, the opening and closing of doors is one of the important and peculiar disturbances which cause a change of air pressure. For predicting the change of air pressure, the author proposed an analytical method that substitutes two kinds of equivalent mass flow rates of air for an opening/closing door. By experimental result, provided from a full sized experimental facility, it was demonstrated that the simulation method that combined Volume-Junction Method and the proposed analytical method for opening/closing doors could predict changes of air pressure in the rooms precisely.
2009-09-25