AIR VENTILATION SYSTEMS

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AIR VENTILATION SYSTEMS

By cleaning air contaminants, removing dust fumes, and bringing in large amounts of fresh air, ventilation system is one of the first lines of defense against sickness. These venting systems may also include a way to provide dust collection for future disposal. Think of a large, industrial-size vacuum cleaner.

In some cases, the design and fabrication of ventilation systems have nothing to do with contaminants. Consider the large stainless steel oven hoods ducting found in commercial kitchens. Here the system is designed to remove smoke, steam, and heat from the work area for more comfortable cooking.

Having proper ventilation is a key to providing a safe and healthy workspace for your employees. A well-designed ventilation system results in better health for your employees as well as reduced risk for workplace accidents.

On top of that, having ventilation system will eliminate the need to completely overhaul your processes. If you are using harmful chemicals, having good ventilation is a decent substitute as you look for alternatives. After fabrication and installation, a well-designed ventilation system removes the contaminated air in minutes. Even faster in some cases, depending on the size of the room and fans.

When planning for a system, consider where the source of contamination is. In a kitchen, the vents are placed right above the cooktop. But thatís not always convenient or efficient in some work environments. To keep indoor air quality at itís best, how the air pollution control system is designed or installed is important for efficiency.

 

PARTS OF VENTILATION SYSTEM

Ventilation system consists of two central parts: the fresh air supply system and an exhaust system. The supply system includes an air inlet, air filtering equipment, heating and cooling equipment, fans, ductwork, and air distribution registers.

The exhaust system has an air intake area, ducts that move air from one area to the next, an air cleaning device, discharge stacks, and fans. Both ends of the system work together to remove a wide range of contaminants from the area.

TWO BASIC TYPES OF VENTILATION SYSTEMS

Dilution Ventilation:

This reduces the amount of contaminants in the air by mixing contaminated air with clean, fresh air. The method usually involves putting large exhaust fans in the walls or roof of a building or room. This type of system is used when air pollution is not very high, and the toxicity level is low to moderate. Dilution systems require less maintenance and are the best ventilation choice for mobile or dispersed contaminant sources.

Local Exhaust Ventilation:

This system captures air impurities and contaminants at or near the source and expels them outside. It requires a hood or other opening that will capture the pollutants at the source. A duct system moves the chemicals through the system, away from the inside.

Quality air filter systems clean the air as it moves. This system is used in areas where contaminants are higher and pose a greater risk to employees and others inside the workspace. This system can handle removing many kinds of pollutants including metal fumes and dust. It uses less energy than dilution systems.


WHY YOU NEED VENTILATION SYSTEM

         Provide people with a continual supply of fresh air from outside 

         Protect workers from heat stroke

         Reduce fire or explosion risks

         Reduce exposure to airborne contaminants