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Industrial Ventilation

Industrial Ventilation Systems

DUCT FOR INDUSTRIAL VENTILATIONUS Duct specializes in designing and fabricating industrial ventilation systems. Our specialists work with a wide range of clients, with unique applications and requirements for ventilation solutions. This experience translates into cost effective systems that can be easily modified and adapted as the process grows or changes.

US Duct produces ducting and related industrial ventilation products built to collect and clean the workplace environment of dust, mist, and fumes. Our ductwork design specialists will work with your facilities manager to identify specific needs, requirements, and layouts/measurements. Based on these specifications, US Duct can identify the most effective solution and provide a quote. Our industrial ventilation systems are designed and fabricated in-house to ensure that the air is cleaned effectively.

Read below for more details about industrial ventilation systems, or contact us to speak with a specialist today.

When Is A Ventilation System Needed?

A properly designed ventilation system involves the integration of multiple disciplines – some academic, others requiring management direction and personnel/process changes. Typically, the need for addressing the ventilation system in a plant arises when dusts, fumes, or chemical concentrations in the air become a safety hazard. These concentrations can reach a level that introduces the possibility of explosion, flame, or reduces the oxygen level below acceptable limits.

In these situations, the ventilation system must accomplish the following:

  • Provide fresh conditioned air
  • Process changes involving personnel, materials and equipment
  • Substitute clean air for dirty
  • Substitute process materials used (chemicals for example)
  • Isolate contaminated air
  • Remove dust or fumes

Before launching the design stage of a ventilation system, considering the current manufacturing process is recommended. Process changes are often the most difficult to identify but the most beneficial in result and in lowering the final cost. Moving and conditioning air is expensive; lowering contaminates through process change can result in faster implementation and lower cost. This can involve use of different materials, different chemicals or fewer process steps. For example, it may be better to isolate a primary source of contamination even if it slows the process down. Purifying a small area will be cheaper than cleaning/conditioning the entire plant due to one or two processes.

However, in the end, the single most effective measure that can be taken to improve industrial hygiene is the introduction of effective dust/fume/mist collection and removal. This is often referred to as “source capture”, meaning that effective collection at the source prevents the contaminant from spreading. At this point, the concentrated dust can be removed fairly easily. It is much more difficult to remove once the contaminant has been diluted by surrounding air.

Designing An Industrial Ventilation System

Design of an effective ventilation system requires knowledge of:

  • The material
  • Velocities required to move the material in the duct
  • Explosiveness (Kst value) of the dust
  • Hood design
  • Impact of dynamic changes in the process or the collection process (surge of material, density of the air, etc.)
  • The type of collector needed and the media that will work best with the material

For example: Wood dust collection typically requires a velocity of 4500 fpm (feet per minute) to keep the material from "falling out" in the duct, while welding fume will effectively move at 2000 fpm or less. Each requires a different media and cleaning process. One is explosive and the other is not; one will surge and the other will not.

Accurately accessing and accounting for these factors is a job best left to an experienced ductwork professional. US Duct is highly skilled at designing ventilation solutions that effectively address removal of dust, fume and mist, all within a cost-effective and adaptable system.


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