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Natural Ventilation Systems

Natural air ventilation is using an unpowered means to evacuate hot, stale air and fumes from a space. Utilizing the natural convection properties offered by process heat and providing a natural path of least resistance. By allowing rising hot air to escape, you create a natural ventilation solution.

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Additionally, a system of natural replacement air should be provided by adding openings low in the building that aid in the evacuation process by adding cooler intake air down low as the warmer hot air is expelled above.

To operate, the roof or ceiling has an opening through a weatherproof ventilator. Fresh air flows at the floor level. The floor-level intake air can come in through existing openings or can be facilitated through a series of louvers and dampers.

These natural air ventilation systems create a cooler and more comfortable building with no operating costs, energy consumption, or maintenance.

Natural air ventilation is using an unpowered means to evacuate hot, stale air and fumes from a space.

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Natural Ventilation Requirements

Many factors play a role in determining the operational requirements for a natural ventilation system.

The main factors considered are:

  • Rate Of Supply Of Fresh Air
  • Air Movements
  • Air Changes Per Hour (ACH)
  • Temperature Of Air
  • Humidity
  • Purity Of Air
  • BTUH Equipment Heat Rejection
  • Local & State Ordinances
  • Permissible Noise Levels (PNL)
  • Stratification

Equipment for Natural Ventilation

Proper ventilation equipment is necessary in order to implement a natural ventilation system. Several factors are involved, including, but not limited to, structure type, application, and size. These factors play an important role in the equipment required.

Listed below is a list of the more common natural ventilation equipment.

Natural Ventilation Vents

Vents exhaust a substantial amount of warm air. This is done without allowing rain or other precipitation inside the structure. Available in various sizes, natural ventilation vents are able to meet building specifications while adhering to local city and state codes.

Ventilation vents can withstand winds up to 130 MPH. Wind direction and speed do not impact the effectiveness of the natural ventilation vent.

Low-profile vents minimize the effect of wind while reducing weight. They are made of aluminum and steel. They are also waterproof.

Natural ventilation vents can further reduce the need for electricity in a structure by introducing natural light into it. Warm air is exhausted by opening the flaps. When they are closed, they allow light to enter while still protecting the inside from outside elements.

These multi-functioning vents are designed with industrial and commercial applications in mind.

Natural Daylighting Vents

Natural casement ventilators are manufactured with versatility in mind. Can be fitted either horizontally or vertically and designed to meet aesthetic demands while remaining functional.

Natural Casement Ventilator

A natural casement roof ventilator is a great natural solution for day-to-day ventilation as well as smoke control. With high acoustic, thermal, and aerodynamic performance that is suitable for a majority of commercial and industrial applications.

Natural casement ventilators are manufactured with versatility in mind. Can be fitted either horizontally or vertically and is designed to meet aesthetic demands while remaining functional.

Contact a Pro to help find the best natural ventilation products for your application

We are official distributors for the manufacturers listed below. As official representatives, we’ll be happy to help explain a solution for your application. Contact us for a quote or any information regarding their products.

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Natural Ventilation Louvres

Natural ventilation louvers come in a range of weather protection choices, blade profiles, and design styles that suit the project. They can be factory-built or on-site assembled. Either way, louvers still have the flexibility of custom designs to match complex building architecture.

Turbine Ventilators

Turbine vents are essentially exhaust fans that rotate in the lightest of breezes. Regardless of whether there is wind, turbine ventilators continuously expel warm air. This is due to warm air rising through natural convection, drawing warm air up and out of the turbine. This self-perpetuating cycle is what makes turbine vents valuable for natural ventilation systems.

They are made of light-gauge but durable marine-grade aluminum materials that are made to last and will not rust or seize. Additional turbine configurations include:

  • Epoxy or urethane powder coating
  • Standing seam adaptor
  • Floating roof adaptor
  • Curb caps are needed in order to fit roof curbs

Diffusers

Specifically designed diffusers for natural ventilation systems. The aluminum plate-type heat exchangers recover heat from the air. The heat exchangers effectively transfer heat from warm air to cold air with efficiency and high conductivity.

  • Drop Plenum Diffusers
  • Ceiling Air Diffuser
  • Floor Air Diffuser
  • Floor Displacement

Gravity Roof Vent

Gravity roof vents are also known as roof-mounted gravity relief vents or relief air openings. These rectangular hoods come with a backdraft damper and a bird screen. Silencers for the gravity roof vent are optional.

Industries Using Natural Ventilation

Natural ventilation systems are used in a variety of commercial and industrial applications. These systems are a natural way of improving air quality within buildings. 

Below are just some of the industries that benefit from using natural ventilation systems:

Natural Ventilation Equipment Manufacturers

venco fans manufacturer

Venco Ventilation

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United Enertech Supplier, united enertech distributor

United Enertech

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AbsoluteAire

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