These stand-alone systems are typically used in large workshops where crane transportation is present, and ductwork is difficult to install. Types of Fume Extraction Ventilation Systems Diluter Systemsĭiluter systems are an option when at source extraction may not be practical. Cleaning starts automatically as soon as the fan is switched off. This unit comes with a self-cleaning filter system to ensure constant and high filter efficiency. ![]() The DraftMax is a work bench that comes highly recommended for intensive welding and grinding. ![]() Downdraft tables are suitable for smaller workpieces. Fumes are drawn down and back through a grid into exhaust ducting, preventing them from rising and mixing into the worker’s breathing zone. Engineered Solutionsĭowndraft tables are a simple and effective source-capture fume ventilation system. These systems may include both dilution ventilation and local exhaust ventilation. Plymovent has a dedicated team of specialists throughout North America who will be able to assist you with facility evaluation and consultation to design a custom-tailored solution to fit your needs and goals. Examples of Dilution Ventilation include:ĭepending on the size of your facility, processes and work pieces, a custom solution may be necessary. Combination solutions (both at-source and dilution) are also a popular choice. Larger facilities will generally adopt dilution ventilation. ![]() Most dilution systems will aim to “fully” cycle through the air at set intervals (e.g., 10 minutes). Examples of Local Exhaust Ventilation include:ĭilution ventilation aims to reduce the airborne concentration of contaminants by introducing fresh or filtered air to acceptable exposure levels. This is the preferred method of fume removal if the fumes are a serious health risk, heating and cooling costs are a concern, and if there are a limited number of emission sources. This offers some of the greatest protection as toxic elements are captured before they can mix with a worker’s breathing zone. Local exhaust systems remove aerial contaminants at or near the source.
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