Positive and negative pressure combined fresh air management device in electric power foundation pit

The utility model provides a positive and negative pressure combined fresh air management device in an electric power foundation pit, and belongs to the technical field of exhaust engineering. A fresh air management device combining positive pressure and negative pressure in an electric power founda...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	SONG ZIYAN, LIANG JING, CUI FENGQING, LI RUIXIN, LI QIANG, XIA YUANLI, SONG XIAOYAN
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	AIR-CONDITIONING, AIR-HUMIDIFICATION, VENTILATION, USE OF AIRCURRENTS FOR SCREENING BLASTING HEATING LIGHTING MECHANICAL ENGINEERING RANGES VENTILATING WEAPONS
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