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Fan filter unit. A fan filter unit ( FFU) is a type of motorized air filtering equipment. It is used to supply purified air to cleanrooms, laboratories, medical facilities or microenvironments by removing harmful airborne particles from recirculating air. [ 1] The units are installed within the system's ceiling or floor grid.
The Corsi–Rosenthal Box, also known as a Comparetto Cube, [ 1] is a design for a do-it-yourself air purifier that can be built comparatively inexpensively. It consists of four [ 2] or five [ 3][ 4] HVAC particulate air filters that form a cube and a box fan to draw air through the filters. The seams of the cube are sealed with duct tape.
Some AHU components shown are. An air handler, or air handling unit (often abbreviated to AHU ), is a device used to regulate and circulate air as part of a heating, ventilating, and air-conditioning ( HVAC) system. [ 1] An air handler is usually a large metal box containing a blower, furnace or A/C elements, filter racks or chambers, sound ...
Computer fan. A computer fan is any fan inside, or attached to, a computer case used for active cooling. Fans are used to draw cooler air into the case from the outside, expel warm air from inside and move air across a heat sink to cool a particular component. Both axial and sometimes centrifugal (blower/squirrel-cage) fans are used in computers.
Dust collectors are used in many processes to either recover valuable granular solid or powder from process streams, or to remove granular solid pollutants from exhaust gases prior to venting to the atmosphere. Dust collection is an online process for collecting any process-generated dust from the source point on a continuous basis.
A powered air-purifying respirator ( PAPR) is a type of respirator used to safeguard workers against contaminated air. PAPRs consist of a headgear-and-fan assembly that takes ambient air contaminated with one or more type of pollutant or pathogen, actively removes (filters) a sufficient proportion of these hazards, and then delivers the clean ...
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