HVLS Ceiling Fan
Industrial Ceiling Fan
A direct-drive IE5 fan that covers up to 1,700 m2 of high-bay floor on 1.5 kW, with no gearbox and no oil change for the life of the installation.
HVLS Fans in Free Stall Dairy Barns and Milking Parlours
Dairy operations in open-sided free-stall housing. Clients are not named at their request; the installation photographs are our own.
Project Challenge
The Building and the Problem
Open-sided free-stall barns and a milking parlour, where heat and insects both cut production and where air conditioning is not an option at any price. The large industrial HVLS fan was originally invented to ventilate and cool livestock, and this is the application it was invented for.
Customer pain points
- In hot weather cows lose appetite, and with flies, mosquitoes and gadflies on top of it, reproductive capacity and milk production fall
- In wet weather mosquitoes multiply, ventilation is poor, infection spreads and mortality rises
- A poorly ventilated cowshed lets a large volume of manure volatilise into toxic gas, harming both cattle and staff
- Cattle held densely in a parlour holding area generate heat and humidity faster than anywhere else on the farm
Our Solution
What Was Installed and Why
Large-diameter HVLS ceiling fans down the length of the free-stall barn and above the parlour holding area. The fans rotate slowly through large-diameter blades to form a three-dimensional circulating airflow covering the whole barn, similar to natural wind, so the animals dissipate heat rather than being blown at.
1
Coverage across the barn, not a strip
Low speed, high air volume and three-dimensional air supply from top to bottom strengthen circulation in all directions, so the growing environment stays clean and dry across the building.
2
Air exchange through the openings
The airflow drives exchange with fresh outdoor air through doors, windows and the roof, which reduces bacteria in the air and lowers the disease risk.
3
Insects moved off the animals
The moving air drives away mosquitoes and prevents cattle being bitten, which is a direct route to reduced losses rather than a comfort argument.
4
Mounting detailed for barn structure
Farm roof structures differ from industrial ones, so fixing detail was issued against the actual purlins and trusses rather than an industrial standard.
Quality Control
What Was Checked Before Despatch
- Stator withstand-voltage testing and blade dynamic balancing on every unit
- Mechanical retention features including the wire rope traction device checked at final assembly, which matters above livestock
- Controller protection functions verified before crating
Final result
A barn with appropriate temperature, clean dry bedding conditions and visibly fewer insects on the animals, achieved with equipment that has low energy consumption, low speed, low noise and large air volume.
Customer benefit
Appropriate temperature makes livestock comfortable, which increases appetite, promotes digestion and speeds the growth cycle, reproduction and production capacity. Reduced disease risk avoids the large-scale infections that cause the real losses.
Products Used
The Equipment in This Reference
HVLS Ceiling Fan
Wall Fan
Industrial Exhaust Cooling Fan
One-piece formed housing with extra-thick zinc coating, automatic shutters and a bottom drain, for negative-pressure ventilation in hot, humid and smelly buildings.
HVLS Floor Fan
Big Movable Fan
A wheeled HVLS fan that throws air up to 28 m in open space, for bays where nothing can be hung from the roof and the cooling has to follow the work.
Questions
Questions About This Installation
No. The airflow is generated by the slow rotation of a very large blade set and simulates a natural breeze of two to three levels, which reaches the animals gently. That is why the format works for ducks and young stock as well as for cattle.
Yes, and open-sided housing is the classic case. The fans circulate air inside the building while the open sides and ridge provide the exchange with outside air.
There, wall exhaust fans running negative pressure are essential and the ceiling fans work alongside them. In a pig house the target we work to is holding the temperature below 28 C after ventilation cooling while discharging the dirty air.
The HVLS ranges use blades with T5 plus bright surface oxidation for corrosion resistance and sealed direct-drive motors with no gearbox oil. Wall exhaust fans in the same building use a zinc-coated one-piece housing with a bottom drain.
A Building Like This One
Send a photograph of the roof structure and the building dimensions. That is usually enough to start.