HVLS Destratifiers

  • Temperature decrease by 7°C in summer
  • Equalizing the temperature difference to 2°C in winter by disrupting temperature layers
  • Decreased costs of ventilation and heating
  • Remote control of the motors
  • Performance of up to 550,000 m3/hour
  • Consumption of 150W – max. 850W
  • Speed of 6 to 280rpm

How does it work?


The purpose of the HVLS destratifier is to move the air from the fan located at the top down to the floor. At the bottom the air flow is of a radial shape and moves from the centre of the fan to the sides. The large volume of air flow ensures perfect air circulation without draught.

In summer, the climate inside the building is affected by increased temperature and humidity. This is partly caused by the residual heat of the machinery, natural penetration of heat and humidity from the outside, and increased humidity depending on the nature of production. The HVLS fans mix the air inside the building in a large volume and effectively reduce the inside temperature by mechanical ventilation. Thanks to the low speed of the fan, employees inside the building are exposed to a gentle breeze that decreases the amount of moisture on their skin.

In winter, in addition to greater humidity, warm heating air causes significant temperature differences between the floor and the ceiling of the building. Warm air moves from the floor to the ceiling. These temperature differences, which result from the amount of heat used for heating, ventilation, residual heat of the machines, and structural quality of the building (internal volume, height, wall insulation, type of windows, roof insulation), can reach considerably high values. This results in cold air at the bottom and warm air under the ceiling. In winter, the HVLS fans rotate at a low peripheral speed and transport warm air from under the ceiling to the floor (mixing of warm and cold air – destratification process) to reach the final temperature difference between the floor and the ceiling of 2 degrees, depending on the building insulation and nature of production.

These are industrial high-volume low-speed (HVLS) fans with a vane span from 2.5 to 7 metres and air flow up to 550,000 m3/hour.

The fans are driven by special brushless motors with a permanent magnet and intelligent speed control by a frequency inverter. They are equipped with a programmable control unit for cooling and destratification of the building based on temperature and humidity.

They feature high energy efficiency, extremely low noise level, IP65 protection for various types of production, and very low power consumption.

Their speed ranges from 5 to 250 revolutions per minute. The aerodynamic shape of the vanes allows draught-free transportation of large volumes of air inside the building. High air re-/circulation efficiency decreases heating and cooling costs. This makes destratifiers a suitable complement or even an adequate replacement of piped HVAC systems.

Thermal destratification

Thermal destratification is a simple concept with a great effect. Every building or space, which is heated or cooled, or which requires ambient control for staff, animals or machinery, can be conditioned by thermal destratification using HVLS fans. The air flow reduces subjectively perceived temperature. HVLS fans ensure air flow and cooling of the surface of the human body by convection and evaporation. The actual air temperature remains the same. People located in the building feel comfortable as a result of air rinsing. The climate is suitable for productive work, relaxed shopping, fairs, sports, etc.

HVLS destratifiers offer significant energy and financial savings, optimise the performance of the HVAC system, improve ambient control, ensure comfort, and represent a cost-effective solution to reduce the carbon footprint of buildings. Cooling by a single degree of temperature requires 5% of energy consumption. HVLS fans offer a fast return on investment.

 

HVLS Destratifiers


These are industrial high-volume low-speed (HVLS) fans with a vane span from 2.5 to 7 metres and air flow up to 550,000 m3/hour. The fans are driven by special brushless motors with a permanent magnet and intelligent speed control by a frequency inverter. They are equipped with a programmable control unit for cooling and destratification of the building based on temperature and humidity. They feature high energy efficiency, extremely low noise level, IP65 protection for various types of production, and very low power consumption. Their speed ranges from 5 to 250 revolutions per minute. The aerodynamic shape of the vanes allows draught-free transportation of large volumes of air inside the building. High air re-/circulation efficiency decreases heating and cooling costs. This makes destratifiers a suitable complement or even an adequate replacement of piped HVAC systems.

Destratifiers operate in the following two modes:
1. In summer, the climate inside the building is affected by increased temperature and humidity. This is partly caused by the residual heat of the machinery, natural penetration of heat and humidity from the outside, and increased humidity depending on the nature of production. The HVLS fans mix the air inside the building in a large volume and effectively reduce the inside temperature by mechanical ventilation. Thanks to the low speed of the fan, employees inside the building are exposed to a gentle breeze that decreases the amount of moisture on their skin.
2. In winter, in addition to greater humidity, warm heating air causes significant temperature differences between the floor and the ceiling of the building. Warm air moves from the floor to the ceiling. These temperature differences, which result from the amount of heat used for heating, ventilation, residual heat of the machines, and structural quality of the building (internal volume, height, wall insulation, type of windows, roof insulation), can reach considerably high values. This results in cold air at the bottom and warm air under the ceiling. In winter, the HVLS fans rotate at a low peripheral speed and transport warm air from under the ceiling to the floor (mixing of warm and cold air – destratification process) to reach the final temperature difference between the floor and the ceiling of 2 degrees, depending on the building insulation and nature of production.

APPLICATIONS

The technology is convenient for application in production halls, logistics hubs, hangars, workshops, airports, shipyards, shopping malls, hobby markets, construction centres, sports facilities, swimming pools, trade fair halls, multi-purpose halls, showrooms, but also in agriculture, food industry, etc.

 
* Area where we measure air speed at 1m height from ground with speed above 0,3 m/s
** Area where you have can measure air movement > 0,05 m/s at 1m height from ground
*** Air flow calculated as average air speed (m/s) * 3,14 * (3 times diameter/2)*(3 times diameter/2)*3600

Comparison of technologies HSF, HVAC a HVLS

1 HSV – High-Speed Fans
2 HVAC – Heating, Ventilation, Air Conditioning
3 HVLS – High-Volume Low-Speed / destratifiers

Advantages of FAIRAIR Destratifiers:

  • 1. ENERGY EFFICIENT – Savings of up to 40% of the costs of cooling, ventilation and heating by bringing warm air to the floor of the building.
  • 2. WARRANTY – Service interval of 25,000 hours – monitored by the fan.
  • 3. ZERO MAINTENANCE – No gears, no oil, no friction. The on-board electronics eliminates the need for variable frequency drives.
  • 4. INTELLIGENT CONTROLLER – Speed can be easily and fluently adjusted using the control box.
  • 5. MUCH QUIETER – Gearless design delivers extremely silent operation.

Industry, Commercial and Resident air solutions