id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
cord-024148-6ag1eskv	Xu, Zhonglin	Three Misunderstandings for Design of Negative Pressure Ward	2016-12-01		.txt	text/plain	6551	373	65	Table 2 .5 shows the experimental data on the influence of the magnitude of the negative pressure difference on the outward leakage rate of pollution during the opening process of doors. In order to avoid the influence of supply air, indoor vortex and opening/closing of doors on the measurement of pressure difference, which should be paid attention to especially for small room, exterior hood should be placed at the original test hole and the vent hole should be set beneath the hood, which is shown in Fig. 2.4 . It is shown in this figure that with the increase of the negative pressure difference value indoors, the number of particles dispersed outwards during opening and closing of doors reduces slightly. Even though the pressure difference indoors is positive and the door is air-tight, exchange of pollution airflow cannot be prevented during dynamic condition, such as opening and closing of doors.	./cache/cord-024148-6ag1eskv.txt	./txt/cord-024148-6ag1eskv.txt