Welding Fume Extraction System Design Calculation

The face opening value is the maximal open width x height for your fume hood while face velocity references the capture distance i e.

Welding fume extraction system design calculation.

There are two methods of high vacuum extraction. 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. The extraction airflow is approximately 35 to 60 cfm 60 100 m3 hr for integrated fume extraction guns. Depth of the fume hood.

Reducing fume generation limiting operator exposure to fume. Approaches to controlling welding fume actually fall into two broad categories. 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. Use fume capture nozzles built into the gun tube and handle.

In welding companies there are certain cases in which capturing the welding fumes at the source may not be feasible in practice. The airflow volume is one of the factors which decides how effective a welding fume extraction system is. Side view of fume distribution for the original design at the low left and high right flow rate on a central plane. Every application has different requirements.

The airflow volume describes the quantity of air flowing through a pipe over a specified time. Mechanical exhaust ventilation systems design calculations and operational guidelines 2019 page 5 of 30 p. However experience with welding fume extraction is equally important. There are ways of calculating the correct size.

Although fume extraction may be the first solution that comes to mind other options should be considered as well. Weld fume smoke collection systems in portable and stationary designs are available to collect welding fumes from point sources and ambient environments. Irrespective of whether the system is for spot extraction or hall ventilation. 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.

The correct sizing and planning of the ventilation system is therefore crucial. Reducing fume generation welding design considerations. Fume extraction systems are included in osha s hierarchy of controls for managing fume and are designed to keep your employees safe and comfortable.