Natural Ventilation Systems
Table of Contents
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.
Additionally, a system of natural replacement air should be provided by adding openings low in the building that aids 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 and very little maintenance.
Natural Ventilation Requirements
Many factors play a role in determining the operational requirements for a natural ventilation system. The main factors considered are:
Equipment for Natural Ventilation
Proper ventilation equipment is necessary in order to implement a natural ventilation system. Several factors including, but not limited to, structure type, application and size. These factors play an important role in the equipment required.
Listed below are a list of the more common natural ventilation equipment.
Natural Ventilation Vent
Vents exhaust a substantial amount of warm air. This is done without allowing rain or other precipitation inside the structure. Available in various sizes, custom made natural ventilation vents are able to meet building specifications while adhering to local city and state codes.
Ventilation vents can withstand wind up to 130 MPH. Wind direction and speed do not impact the effectiveness of the 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 by introducing natural light into a structure. Warm air is exhausted by opening the flaps. When they are closed they allow light to enter while still protecting inside from weather elements.
These multi-functioning vents are designed with industrial and commercial applications in mind.
Natural Daylighting Vents
Natural day lighting vents are suitable for industrial and commercial applications. They provide light through large translucent window panels. These daylight vents provide daylight to lower electricity expenses further. They can be opened via a motorized or manual rack and pinion system.
Turbine vents are essentially exhaust fans that rotate in the lightest of breezes. Regardless if 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.
Custom Louver Features:
Heat Recovery Units
Gravity Roof Vent
Industries Using Natural Ventilation
The fumes and contaminants from welding, brazing, soldering, and torch cutting are toxic and require proper ventilation. According to OSHA regulations, when welding or cutting mild steels, natural ventilation is considered sufficient to avoid exposure when following their guidelines (OSHA Guidelines).
Temperatures do not have to be frigid to reap the benefits of natural ventilation in data centers. That’s why over half of data centers are now choosing natural ventilation to cool their servers (source).
Office buildings and other commercial office spaces accounts for 76% of electricity consumed in the US (source). The concern with commercial buildings is that it’s necessary to keep occupants comfortable when outside temperatures are not suitable for indoors. That is where a natural hybrid ventilation system comes into play.
- air flow
- other important factors
Garages & Parking Lots
Industrial buildings, such as mills, benefit from natural ventilation systems. The high ceilings allow for heat to escape easily. Allowing the hazardous materials to ventilate easily through strategically placed vents.
Fresh air flows freely inside to push odors, dust, and fumes up and out of the mill. This is all done without any additional noise.
Common industrial mills that benefit from natural ventilation:
Benefits of Natural Ventilation
Moffitt Corporation designs, manufactures, and installs ventilation equipment. They serves facilities ranging from commercial and institutional to heavy industrial.
Venco Products, world leader in the HVAC industry, has chosen R. Williamson & Associates as distributor for their natural ventilation systems, dampers, louvers, accessories & more.
American owned and operated, United Enertech is your source for high quality and dependable louver, damper, and natural air ventilation products.