A cool advance in HVLS technology

As summer returns, so too does the heat and uncomfortable conditions that impact on the productivity of employees working in warehouses and factories. Fantech highlights the importance of having a well ventilated facility.

The human body is designed to maintain an average temperature of about 37°C.

In hot weather, the body sweats and the resulting moisture evaporates to cool the skin. But when the environmental temperature is hotter than the body, a number of heat-related conditions can result.

In large, enclosed spaces such as warehouses and factories where high heat can impact on
the comfort and productivity of employees, Hunter high volume, low speed (HVLS) fans are designed to eliminate the build-up of hot, stagnant air in summer by maintaining constant air movement.

Developed by Hunter Industrial – part of the 133 year-old Hunter Fan Company – Hunter HVLS fans feature a light weight, direct-drive motor that makes installation easy, delivers exceptionally low operating costs, and provides whisper quiet, trouble-free operation.

The design of its aerofoil blade features a unique twist profile to maximise efficiency and deliver a high volumetric flow rate.

Direct-drive, light weight motor Hunter HVLS fans use a direct- drive, permanent magnet motor that offers several advantages.

“The direct-drive motor is significantly lighter than gear-driven alternatives,” explained Peter Henry, intelligent ventilation product manager at Fantech.

“It’s designed to generate large amounts of torque even at low speeds, while operating at less than 55dBA to ensure whisper quiet operation.”

The direct-drive motor is up to 50 per cent more energy efficient than a gearbox or gear-driven fan motor and is extremely durable with fewer components.

All about the blade
The innovative geometry of Hunter HVLS fan blades was developed in collaboration with an aerospace engineer to ensure large air volumes were generated while minimising noise and energy use.

“Every fan size in the Hunter range features its own blade profile that varies over the length of the extrusion to ensure air flow is maximised across its entire blade length,” said Henry.

Engineered for easy installation
 If ease of installation is important, then Hunter’s Titan and ECO HVLS fans provide a capable solution.

As well as being light weight, the range has been specifically engineered to be quick to install and simple to commission.

Installation errors are minimised thanks to a number of pre-assembled features, including pre-installed studs, a pre-wired drop tube, and pre-aligned mounting brackets. The drop tube’s “quick connect” clamping system attaches the drop tube to the building’s I-beam without the need to drill holes.

The blade clamps on the Titan range of fans are replaced with a proprietary “quick connect” system.

“This means just one installer can easily mount the Hunter HVLS blades,” said Henry.

“It’s done by simply sliding each blade tube into the blade hub until it clicks into place. Then simply tighten the pre-installed set screws with a torque wrench to lockdown the blades.”

Hunter Titan HVLS range
There are large industrial HVLS fans, and then there is Titan.

This master of the air achieves thorough mixing within an indoor space to eliminate uneven temperatures, while reducing energy costs, improving comfort, and increasing productivity.

The Titan HVLS fan has an effective coverage area ranging from 484m2 with the 4.2m size, to a massive 1,369m2 with the 7.3m model.

The Titan range features a sleek and contemporary design that will complement any commercial space.

Hunter ECO HVLS range
Hunter ECO is one of the lightest HVLS fans available on the market.

Featuring a robust direct-drive motor and structural aluminium blade design, the range is supplied with the same “plug and play” pre-assembled components to simplify installation.

The Hunter ECO has an effective coverage area ranging from 95m2 with the 2.4m size, to 858m2 with the 7.3m model.

Touchscreen controllers
The Hunter range of touchscreen controllers are designed to speed control each fan individually in forward and reverse, or manage a system of up to 30 HVLS fans.

The control system with scheduling takes advantage of the latest digital technology to ensure it can be tailored to suit the requirements of almost any high ceiling application.

Selection made easy
Not all HVLS fans are the same. Whether air is moving through a commercial space, a temperature- sensitive facility, or a large industrial warehouse, selecting the right size Hunter fans with the most effective spacing arrangement will ensure the best return on investment is achieved.

Fantech’s web-based, step-by-step selection tool makes choosing the most effective HVLS fans for your application simple.

“Just enter the width, length and height of the area the fans will serve, as well as the ambient temperature and desired cooling effect from the fans, and let the selection tool do the rest,” said Henry.

The Fantech HVLS selection tool performs calculations to the ASHRAE Standard 55-2017 Thermal Environmental Conditions for Human Occupancy to determine the best fan, size, and spacing arrangement.

Using this standard, the cooling effect of Hunter HVLS fans at different locations relative to other fans (under normal conditions) is determined.

The selection tool can also estimate energy savings when using HVLS fans in air-conditioned spaces, or when HVLS fans are used for de- stratification.

For more information, and to use the selection tool, visit www.fantech.com.au/hvls.