Welding Fume Extraction System Design Calculation

Recirculating hood system ductless hoods or ventless hoods a self contained air exhaust system that removes grease vapors fumes smoke steam and odors from the.

Welding fume extraction system design calculation.

Depth of the fume hood. The face opening value is the maximal open width x height for your fume hood while face velocity references the capture distance i e. Every application has different requirements. Mechanical exhaust ventilation systems design calculations and operational guidelines 2019 page 5 of 30 p.

The correct sizing and planning of the ventilation system is therefore crucial. The airflow volume describes the quantity of air flowing through a pipe over a specified time. Fume extraction systems are included in osha s hierarchy of controls for managing fume and are designed to keep your employees safe and comfortable. Use fume capture nozzles built into the gun tube and handle.

The extraction airflow is approximately 35 to 60 cfm 60 100 m3 hr for integrated fume extraction guns. Approaches to controlling welding fume actually fall into two broad categories. There are two methods of high vacuum extraction. Reducing fume generation limiting operator exposure to fume.

Side view of fume distribution for the original design at the low left and high right flow rate on a central plane. Welding guns with built in extraction fume extraction guns or separate suction nozzles of various designs. However experience with welding fume extraction is equally important. Irrespective of whether the system is for spot extraction or hall ventilation.

There are ways of calculating the correct size. The calculation for the cfm of a fume hood is obtained by multiplying the face opening window of the fume hood and the face velocity. Our complete line of filtair fume extractors are designed specifically for welding drawing weld fumes away from the user s breathing zone and keeping your facility clean. For example when.

The airflow volume is one of the factors which decides how effective a welding fume extraction system is. Reducing fume generation welding design considerations. Although fume extraction may be the first solution that comes to mind other options should be considered as well.