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  1. sherifheity

    4000 CFM fan with 3 in static - Please check

    i want to add to all the above , you have to check what is the air outlet?.....i saw jet nozzles having 200 Pa Pressure drop! i suggest if you feature all the duct accessories you have from the AHU discharge up to the air outlet. regards, Sherif Abulfetuh
  2. sherifheity

    2- Speed Fans ( Car Park )

    Actually car park ventilation & Smoke extraction work in three modes: 1-Normal ventilation (normally at 3 ACH (Air change Per Hour) 2-CO detection (fans will jump to do 6 ACH) 3-Smoke/Fire detection (Fans will work at max. speed to do 10 ACH). ideally the selection of the fans should be done...

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