抄録
For quality assurance of pharmaceuticals, room pressures of pharmaceutical manufacturing facilities need to be precisely controlled. However, the room pressure fluctuates due to several causes, i.e. starting and stopping of local exhaust ventilators, fluctuation of the reference pressure, gusts from outside air intakes, opening and closing doors, mode switching of air conditioning systems. It is thought that these fluctuations of room pressure can be suppressed by constant return air volume control, passing reference air through a long distance, combination of ducting and motor dumpers, combination of constant room pressure control and constant air volume control, and holding the operating state of each air conditioning device as room pressures rise and fall. It is shown that these methods are effective for room pressure control
by theories and experiments using the equipment that imitated a real building.
