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Ventilation of a factory's second floor

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Gauss2k

Electrical
Feb 27, 2004
49
Hello,

I've been asked to add ventilation on the second floor (about 32k sqf) of a factory and I'd like to have your opinion.

Since several machines (using steam) are used one the first floor, a lot of heat rises to the warehouse on the second floor. The finished products are brought from the first to the second floor by conveyors and there are stairs for the employees; thus the hot air have several openings to climb up.

My first thought was to try to stop the incoming hot air by adding walls and doors to the stairs and by adding strip-curtains to the conveyors. Then I could add fans to create an horizontal flow of air through the 2 straight corridors going from on end to the other, about 325 feets long. (There is not enough room above the stored materials to use big fans pushing air towards the floor, like I saw in other threads)

To avoid having to seal the stairs and conveyors, someone else suggested to add fans on the second floor that would push air from the outside to the inside in order to create a pressure high enough to stop the natural convection of the hot air coming from the first floor. Then we could release a controled quantity of the remaining hot air from the roof (while keeping the local pressure high enough to prevent the hot air from raising).

What do you think? Any suggestions?

Thank you
 
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Why not install through wall exhaust fans on the first floor with intake air grills on the second floor . Controll the exhaust fans with temperature controls to cycle the fans in the winter time.
 
Natural ventilators provide a cost effective method...also can be used as smoke extract. LEV Local exhaust vent is next best option. Put hoods over heat sources and vent to atmosphere.

Friar Tuck of Sherwood
 
You can also use air curtains on the connections between first and second floor (stairs/coveyors,etc.). This can help to not have hot air coming from there. Did you assess if there is also thermal transmission trought the ceiling 1st level/floor 2nd level? This might also contribute to the build up of temperature inside 2nd floor area.

PR
 
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