Hello All, I recently was given the task at my job to provide an engineering analysis on a Welding Exhaust Ventilation system that is under-performing (they want to go from 600cfm to 2000cfm per ACGIH recommendations). My "normal" job doesn't involve HVAC in the least but since I'm the new guy and 2 years out of college they think im up for the task. Now the information I have on this system as of now is minimal but I only came here to learn some basics and figure out what I should research to upgrade a welding ventilation system. Is there anything to look out for when designing for welding exhaust that is different than normal ventilation? Is a jump from 600cfm to 2000cfm great enough that duct work may be necessary? What questions should I be asking and is somebody as uninitiated as myself be able to complete a project such as this? Thanks for any help!