pressure fan

pressure fan

[′presh·ər ‚fan]
(mining engineering)
A fan that forces fresh air into a mine as distinguished from one that exhausts air from the mine.
References in periodicals archive ?
"They then damped the area affected by the fire down to make it safe and used a large high pressure fan to clear smoke from the house.
Officers using breathing apparatus fought the fire using a hose reel, while a thermal imaging camera and a positive pressure fan were also used.
Remediation included cleaning kitchen surfaces with chemical wipes, and heating and ventilating the kitchen with a negative pressure fan venting outside until air levels of mercury were <0.3 [micro]g/[m.sup.3].
Firefighters wearing breathing apparatus helped tackled the blaze and a high pressure fan was used to disperse smoke.
(5) Air blower: Discharge machine of middle pressure between pressure fan and compressor.
"Crew members wearing full protective equipment ventilated the premises using a Positive Pressure Fan and looked for signs of contamination but couldn't find any."
Kongskilde has developed the Multiair high pressure fan, which is a high efficiency centrifugal blower unit that is housed in a standard modular acoustic cabinet providing excellent noise properties and also full weather protection for most outdoor installations.
A small positive pressure fan was installed and ducted to the tie-in point in the dust collector ductwork.