Tag Archives: Energy efficient

Car Dealerships and LEDs: Implement Sustainability and Reduce Costs

All photos courtesy Optec LED Lighting

All photos courtesy Optec LED Lighting

by Jeff Gatzow

When car dealerships try to outshine each other through the use of bright light on their lots, much of the illumination is wasted off the lots’ parameters. While these lights serve a dual purpose of attracting potential customers and as a 24/7 security system, they also devour energy.

There are more than 17,000 automotive dealerships in North America. On average, they use up to 18 percent more energy than a typical commercial building annually. Consuming $1.9 billion dollars in energy costs a year, lighting can represent up to 45 percent of those costs as dealerships emphasize marketing their inventory and differentiating their facility from the competition. This amount can add up to thousands of dollars in annual energy costs for a typical dealership.1

Optimized illumination performance enhances the appearance of vehicles.

Optimized illumination performance enhances the appearance of vehicles.

Before#1_Toyota-1

 

 

 

 

 

 

 

 

Saving opportunities
Reducing energy costs is a major consideration for dealerships, which is their third-highest overhead expenditure.2 In 2006, the National Automobile Dealers Association (NADA) formally endorsed the Environmental Protection Agency’s (EPA) EnergyStar Challenge by asking its 20,000 members to reduce annual energy use by 10 percent or more. EPA estimates if auto dealers cut their consumption by this amount, nearly $193 million would be saved and more than one million tons of greenhouse gas (GHG) emissions would be prevented.3

In 2007, NADA and Energy Star launched a joint Energy Stewardship Initiative to help auto dealers improve the energy efficiency of their facilities and operations. The initiative provides data, tools, and other strategies for dealers to implement improved energy practices and technologies at their facilities. Since this launched, more than 800 dealerships have improved the efficiency of their facilities by reducing energy use by 10 percent or more annually.4

Automakers have been climbing aboard the ‘green’ bandwagon for years, with low-emission, high-mileage vehicles that appeal not only to customers looking to save fuel, but also to buyers eager to participate in what is perceived to be an environmental solution. Now, dealerships are following suit. However, dealerships with large parking lots, numerous buildings, and 24-hour demand for light have energy challenges.

LED technology
One potential technology for car dealerships is the light-emitting diode. Light-emitting diodes (LEDs) differ from traditional light sources in the way they produce illumination. In an incandescent lamp, a tungsten filament is heated by electric current until it glows or emits light. In a fluorescent lamp, an electric arc excites mercury atoms, which emit ultraviolet (UV) radiation. After striking the phosphor coating on the inside of glass tubes, the UV radiation is converted and emitted as visible light.

An LED, in contrast, is a semiconductor diode. It consists of a chip of semiconducting material treated to create a structure called a positive-negative (p-n) junction. When connected to a power source, current flows from the p-side (i.e. anode) to the n-side (i.e. cathode), but not in the reverse direction. Charge-carriers (electrons and electron holes) flow into the junction from electrodes. When an electron meets a hole, it falls into a lower energy level, and releases energy in the form of a photon (light).

All light sources convert electric power into radiant energy (i.e. visible and invisible light) and heat in various proportions. Incandescent lamps emit primarily infrared (IR), with a small amount of visible light and heat. Fluorescent and metal halide sources convert a higher proportion of the energy into visible light, but also emit IR, UV, and heat.

As a relatively new technology, LED luminaires currently cost more to purchase than traditional fixtures lamped with high-pressure sodium or metal halide light sources. However, the reduction in relamping expense and increase in energy savings typically lower overall lifecycle cost by about 50 percent.

According to information from the report “Unlocking Energy Efficiency in the U.S. Economy,” a comprehensive lighting retrofit eliminates overall energy costs by up to 75 percent, with the upfront costs recaptured in less than three years.5

Exterior LED luminaire technology has turned the corner from specialty applications to general illumination. Powering this important change is a combination of performance improvements in the core technologies, introduction of a wide range of well-designed products, and continued cost improvements.

The design of LED luminaires is a new world compared to traditional light fixture design. Optical, thermal, and power supply characteristics have a drastic effect on the longevity, performance, and affordability of light fixtures using LEDs.

The generation of luminaires using LEDs dictates the need to harness and manage as much of the light energy as possible. Misdirected illumination usually means wasted light, requiring the need to engineer even more initial light to reach target deliverable light levels. Of course, generating a greater amount of light means higher costs and more heat generation, and if poorly managed, can reduce fixture life.

To minimize the number of LEDs used its important to employ high-performance engineered optics, which allow for more efficiently captured and managed light. The result is superior light distribution with less waste. LED luminaires using high-quality optics are far better at improving light uniformity than any other technology available today.

The prognosis is positive. LED luminaires’ efficacy continues its overall upward progression, doubling in the past two years among tested solid state lighting fixtures. Further, color quality is also steadily improving, making exterior LED luminaires a viable alternative to traditional sources.

The bottom line for LED lighting systems is they have the potential to save a substantial amount of energy costs for lighting over the lifetime of a project. In addition to the energy savings, the long life of LEDs in well-designed systems will result in significant reductions in both labor and material costs for maintenance.

These photos show Gary Force Toyota’s lot illuminated with traditional metal halide fi xtures. A total of 63 of the 1000- W fi xtures were replaced with 240-W light-emitting diode (LED) luminaries for dramatic energy savings.

These photos show Gary Force Toyota’s lot illuminated with traditional metal halide fixtures. A total of 63 of the 1000- W fixtures were replaced with 240-W light-emitting diode (LED) luminaries for dramatic energy savings.

After#1_Toyota

 

 

 

 

 

 

 

 

 

National dealership sustainability initiatives
In 2010, Ford introduced its Go Green Dealer Sustainability Program at three of its dealerships; the auto-maker is now planning to make changes at all 3500 dealerships nationwide. The initial three facilities—one in Florida, one in New York, and one in Nevada—implemented a comprehensive assessment and evaluation of their impacts, primarily from an energy consumption standpoint. Lighting was a key element of the retrofits, aimed at addressing both the quantity and the quality of the onsite lights.6

Ford continues to expand Go Green, as participants can now receive an energy assessment through the Ford Electric Vehicle (EV) Program. The goal of the Go Green program is simple: collaborate with dealers to implement cost-effective ways to improve the energy efficiency of their facilities. Going forward, it will continue to be a key component of Ford’s Dealer Electric Vehicle Program as the company expands its model offerings. As part of the certification process to sell EVs, Ford EV dealers undergo an energy assessment to identify opportunities to reduce their overall carbon footprint and lower their energy expenses.7

Additionally, in 2013 the Go Green energy assessment became an integral component of the U.S. Ford facility renovation program. The company’s goal to renovate more than 700 U.S. Ford Motor Company branded facilities during the next few years presented a tremendous opportunity for green technology implementation within the dealer network.

Ford is not the only car company with sustainable dealership initiatives. Nissan Green Shop Activities include various environmental efforts that take place at Nissan Motor dealerships across the globe, including reducing waste, recycling, and energy saving endeavors. The program was introduced in April 2000 as an environmental management system for all Nissan dealerships.

Something that dealerships in these programs implemented is energy-efficient lighting, which provides one of the quickest paybacks.

Funding assistance
Recently, many dealers moved quickly to take advantage of the Internal Revenue Service (IRS) Section 179D tax incentive, which expired last year. This is the section of the tax code that provided a benefit for businesses, architects, engineers, and contractors when they built or renovated an energy-efficient building.8

If the building project did not qualify for the maximum Energy Policy Act (EPAct) $1.80 per square foot immediate tax deduction, there were tax deductions of up to $0.60 per square foot for each of the major building subsystems—lighting, heating, ventilation, and air-conditioning, and the building envelope.9

Utility companies around the country are encouraging these efforts by offering energy-efficient lighting upgrade and replacement rebates, some of which cover up to 50 percent of installation costs for retrofits. Most utility rebate programs are offered on a first-come, first-served basis until funding is exhausted or the program is discontinued, so it is important for customers to get applications in early.

There are two types of utility rebate programs:

  • prescriptive rebates offer a fixed, predetermined dollar amount for each fixture replaced; and
  • custom rebates are based on the total energy savings of a specific lighting retrofit.

Custom rebate programs offer payments for both actual energy savings (kilowatts saved per hour) of upgrading to more efficient lighting technologies and reductions in peak demand (kilowatts) achieved in the first year after implementation.

Prescriptive rebates, however, do not account for the energy savings gained by reducing the number of fixtures through a redesign. Utilities in almost every state offer some rebates for light emitting diode systems. Details on these programs are aggregated in the federal DSIRE database and individual utility sites.10

The photos to the left show Gary Force Toyota’s lot after the replacement. The installation of LED luminaires enhances the appearance of the vehicles. The new exterior lighting allows the dealership to decrease operating expenses.

This photo shows Gary Force Toyota’s lot after the replacement. The installation of LED luminaires enhances the appearance of the vehicles. The new exterior lighting allows the dealership to decrease operating expenses.

Energy-effi cient LED area lights transform Gary Force Toyota’s parking lot and are virtually maintenance-free.

Energy-efficient LED area lights transform Gary Force Toyota’s parking lot and are virtually maintenance-free.

 

 

 

 

 

 

 

 

 

LEDs in action
Established in 1973, family-owned Gary Force Toyota is part of three award-winning auto dealerships. Based in Bowling Green, Kentucky, the dealership is committed to incorporating sustainable products into the facilities.

Exterior luminaires
As a long-established business, the owners and management team knew they could make a strong environmental statement while also attracting customers. Car dealership lots use a tremendous amount of energy and install many light fixtures to illuminate the cars outside at night.

Gary Force Toyota sits on a 0.8-ha (2-acre) lot with a 210-car inventory, and an 1858-m2 (20,000-sf) showroom and repair shop. The dealership recently replaced 63 of the old 1000-W metal halide fixtures in the exterior lot with the same number of 240W LED luminaires. The dealership also replaced six 250W metal halide wall packs with six 60W LED wall packs.

The impetus for the LED retrofit was the dramatic energy savings. Previously, the dealership was spending almost $30,000 annually on utility costs, however, with the new luminaires, their energy costs will be reduced to approximately $6620. Additionally, every three months, about 12 of the metal halide fixtures needed maintenance, costing $26,400 in maintenance over five years. Now, the new LED luminaires are virtually maintenance free with a five-year warranty.

After seeing the product, learning about the energy savings—greater than 70 percent over the metal halide—and determining the dealership would have just a two year return on investment (ROI) on the LED lights, it was an easy decision. The Tennessee Valley Authority also provided an incentive of $21,700 for upgrading the fixtures to LED.

The LED luminaires provide consistent light levels, reduce hazardous waste disposal, and provide dramatically more efficient light distribution than the metal halide fixtures.

“The new exterior LED lighting allows us to drive down operating expenses, present our cars in the best light, and contribute to the greening of our community,” said Dave Stumbo, owner and vice president/general manager.

Both employees and customers have noticed the bright, white lights and have commented about how much easier it is to see the cars, anywhere in the lot.

“We installed the LED luminaires because they pay back in so many ways,” continued Stumbo. “Additionally, we are so impressed with how well these LED luminaires are performing at Gary Force Toyota we upgraded the exterior lighting at our Acura pre-owned dealership in Franklin, Tennessee.”

Additionally, the lights did not disturb surrounding businesses or residential areas. Many LED fixtures are designed for full cut-off. This means little to no light is emitted above the horizontal plain, therefore minimizing light pollution. To curtail light trespass (i.e. light extending beyond property lines and other boundaries) it is important to use fixtures with the right distribution patterns for the required area.

Conclusion
There are numerous factors contributing to dealerships’ sustainability efforts, such as manufacturers’ national initiatives, consumers’ increased concerns about environmental issues.

An environmentally conscious car dealership seems to be contradictory term. However, the bottom line is that by living and working sustainably dealerships can reduce energy costs, increase their brand/dealership’s recognition, and attract more customers.

Renovations such as LED lighting retrofits or the installation of light-emitting diode luminaires uring new construction are an excellent way for car dealerships to begin achieving their sustainability objectives.

Notes
1 For more, visit www.energystar.gov/buildings/sites/default/uploads/tools/A_Dealer_Guide_to_ENERGY_STAR.pdf. (back to top)
2 See E Source Customer Direct’s “Managing Energy Costs in Auto Dealerships” at www.sba.gov/content/energy-efficiency-auto-dealers. (back to top)
3 See note 1. (back to top)
4 Visit Auto Remarketing’s “NADA Encourages Dealers to take Survey on Energy Use,” article at www.autoremarketing.com/trends/nada-wants-help-dealerships-%E2%80%98go-green%E2%80%99-how-energy-efficiency-will-improve-your-bottom-line. (back to top)
5 For more, see “Unlocking Energy Efficiency in the U.S. Economy” at www.greenbuildinglawblog.com/uploads/file/mckinseyUS_energy_efficiency_full_report.pdf. (back to top)
6 For more, see Matthew Wheeland’s “For Expands Efficiency Efforts to its Dealers’ Lots,” at www.greenbiz.com. (back to top)
7 For more, visit corporate.ford.com/microsites/sustainability-report-2012-13/people-dealers. (back to top)
8 For more, see Dean Zerbe’s article, “179D Tax Break for Energy Efficient Buildings—Update,” at www.forbes.com/sites/deanzerbe/2013/08/19/a-little-known-tax-break-for-building-green/. (back to top)
9 See Charles R. Goulding, Charles G. Goulding, and Rachelle Arum’s article online at www.energytaxsavers.com/pdf/Car Dealers Move Quickly to Complete Tax Incentive LED Lighting Projects.pdf. (back to top)
10 To access the database visit www.dsireusa.org. (back to top)

Jeff Gatzow is national sales and marketing manager, lighting with Optec LED Lighting. He has worked in the LED luminaire industry for over 10 years, and prior to this he worked in the illuminated signage/brand identity industry. Gatzow can be reached by e-mail at jgatzow@optec.com.

The State of HVLS Technology

Images courtesy MacroAir

Images courtesy MacroAir

by Michael Danielsson

Since the original high-volume, low-speed (HVLS) fan prototype came to market more than 15 years ago, there have been significant technology developments, functional improvements, and changing market demands, propelling such fans into the spotlight as a means to save energy—and money—on HVAC systems.

Design enhancements to the motor and blades have allowed for expanded applications from the original dairy industry and large-scale commercial applications to greater use in smaller businesses. HVLS fans impart a number of benefits to business owners and facility managers, including lower energy costs of moving air and creating a comfortable environment. Compared to traditional shop or ceiling fans, the HVLS fan is an energy-efficient air-mover that displaces masses of air from its large slow-moving blades.

In addition to being a supplement to natural ventilation or HVAC systems, HVLS fans reduce or eliminate other facility challenges. The technology helps to improve ventilation and indoor air quality (IAQ) by:

  • continuously mixing incoming fresh air;
  • eliminating condensation buildup by creating a constant state of thermal equilibrium; and
  • providing heat destratification by running in reverse to even out the temperature gradient from floor to ceiling, reducing heat loss.

While the technology can sometimes be misinterpreted as working in similar fashion as generic ceiling fans, HVLS systems are much more evolved.

An HVLS fan slowly circulates a massive amount of air downward, then outward along the floor (i.e. horizontal floor jet), and back up 360 degrees. This causes air to travel through the area in a large circular motion and at a more stabilized rate of speed, keeping all the air constantly and gently moving, rather than letting pockets of air sit stagnant.

An HVLS fan slowly circulates a massive amount of air downward, then outward along the floor (i.e. horizontal floor jet), and back up 360 degrees. This causes air to travel through the area in a large circular motion and at a more stabilized rate of speed, keeping all the air constantly and gently moving, rather than letting pockets of air sit stagnant.

360 degrees of air movement
Designed on principles of physics and aerodynamics, HVLS fans move large quantities of air downward in a large diameter column of air toward the floor. When the air column hits the floor, it changes direction and becomes a ‘floor jet,’ moving outward in all directions until it reaches the walls. At this point, it travels back up to the ceiling, returning to the area of the fan in a horizontal direction, and then getting pushed back down to the floor. This is a natural, circular path created by the huge airfoil blades of the HVLS fan.

Once the air is moving in one direction, it wants to continue moving that way. The clean lines of the airfoil-shaped blades support air movement in the same direction—so once the air flow is established, it tries to continue circulating, creating an energy-efficient way to move air. In other words, keeping the air going in the same direction, rather than diverting it in different ones, enables the system to use less energy for the same result.

Destratification can be achieved in warm or hot climates through a downward air column by running the HVLS fan in forward mode. During cooler months, running it in reverse will push the warm air that accumulates at the top of the space down to the floor without creating drafts or winds in occupied areas.

Smaller high-speed fans are incapable of producing the same air movement and temperature regulation. Slower airspeed, combined with fan blade effectiveness, means large, low-speed commercial fans are significantly more efficient and effective than small high-speed fans because the large-diameter air column travels farther.

Industry standards
Fan performance is measured using cubic meters per minute, or the measurement of volume over time. This means, the higher a fan’s m3/minute (cfm), the higher its volume or capacity.

Once HVLS fans became a staple on the HVAC market about a decade ago, performance measurements became an important indicator to differentiate the growing number of manufacturers. Performance tests conducted by the Air Movement and Control Association (AMCA) in 2006 measured ‘thrust,’ which is the lifting force the fan produces as a result of the air being pushed through it. Thrust has become a valuable measurement in determining output. Fan efficiency can then be evaluated using power consumption compared with the m3/minute output.

Design changes
Various design enhancements have improved HVLS fan performance over the years. Original designs of the HVLS fan featured 10 blades, which manufacturers still offer today. However, in some models, the number of blades has been reduced to six. This complements newer airfoil blade shapes to increase performance.

CS_November2013.inddSix-blade HVLS fans carry 40 percent less weight than the 10-blade construction, thereby lowering the torque requirement, and enabling the fan to rotate more efficiently. Since torque is a constant stress on a fan’s motor, bearings and gear, less torque also means longer fan life. Figure 1 compares the output on six- and 10-blade fans. Above and beyond requiring less fan blades, the innovation also decreased the manufacturing carbon footprint of the products.

Other add-ons or upgrades have been made to enhance performance, but there is still debate on some of their efficiencies. One of the most common features is the ‘winglet’ or curved end cap, which is intended to increase downward air velocities, stabilize air movement, eliminate turbulence, and capture air that would slip off the blade’s end.

However, a winglet built into the design of a HVLS fan’s blade may not be beneficial when affixed to its tips as it may change the natural, circular air path created by the huge airfoil blades.

One 7.3-m (24-ft) diameter HVLS fan can move about 10,619 m3/minute (375,000 cfm). With one cubic foot of air weighing 0.08 pounds, this equates to about 13,608 kg (30,000 lb) of air moving through the fan blades every minute. Once the air is moving in one direction, Newton’s First Law of Motion keeps it that way. The lines of the airfoil-shaped blades, without winglets, can support air movement in the same direction.

Due to the increased torque, winglets can potentially make the fan work harder, and possibly cause turbulence that interferes with the downward column of airflow.

To inform spacing and other installation requirements for a National Fire Protection Association (NFPA) standard, the Fire Protection Research Association Foundation initiated a comprehensive research program with two phases.

To inform spacing and other installation requirements for a National Fire Protection Association (NFPA) standard, the Fire Protection Research Association Foundation initiated a comprehensive research program with two phases.

A majority of testing during the research project used a 7.3-m (24-ft) fan. Performance data indicates the fan produced approximately 9346 m3/minute (330,000 cfm) at 63 rpm.

A majority of testing during the research project used a 7.3-m (24-ft) fan. Performance data indicates the fan produced approximately 9346 m3/minute (330,000 cfm) at 63 rpm.

 

 

 

 

 

 

 

 

 

 

Confidence in safe building design
HVLS fans can be considered a trusted system within a building’s design. In 2012, a collaborative research effort was spearheaded by AON Fire Protection Engineering. Bringing together insurance companies and HVLS manufacturers, the project resulted in updates to the National Fire Protection Association (NFPA) 13, Standard for the Installation of Sprinkler Systems, which provides guidelines to avoid obstructing sprinkler performance in commercial applications.

When installed in accordance with NFPA 13, HVLS fans do not impact the performance of early-suppression, fast-response (ESFR), and control-mode-density-area (CMDA) sprinkler systems.

Both types are typically used in high-storage and warehouse facilities, and need to work in tandem with other facility systems. ESFR sprinklers provide a high output of water from a sprinkler head to suppress a fire and are installed within ceiling spaces as to not interfere with high-piled commodities or moving machinery. CMDA systems control fire outbreaks through pre-wetting combustible commodities and controlling hot gas. The outcome further supports safety guidelines, and consumer and insurer confidence for the fan category.

CS_November2013.inddHVLS fan research conducted between 2008 and 2010 tested numerous scenarios of installation spacing, speed, and other variables of HVLS fan operation on both ESFR and CMDA sprinkler systems upon fires started within rack storage and palletized commodities.1

Installation should include a means of automatic shutdown for all HVLS fans, meaning power to the fan(s) is interrupted within 90 seconds after the first sprinkler operates. This is most commonly achieved through connecting the buildings fire suppression system to the fan control panel.

HVLS fan placement is critical for maximizing effective operations. Obstructions, such as facility structures or stacked materials, reduce the HVLS fans efficiency. To ensure un-obstructed downward and then horizontal air movement, and affect the most space, fans should be installed over open floor space.

Supplementing the HVAC systems with HVLS fans
HVLS fans are increasingly relied on to provide HVAC augmentation as the technology uses little energy. Using chapter nine of the 2012 American Society of Heating, Refrigerating, and Air-conditioning Engineer’s ASHRAE Handbook, it is possible to maintain thermal comfort at a higher temperature in an environment by increasing the air speed. Figure 2 shows the air speed required to offset temperatures above the ideal operative temperature.

As industrial and commercial buildings face increased scrutiny on energy consumption, HVLS fans can provide an advantage when used as part of an energy-efficient HVAC solution. Whether installed in an existing facility or designed into a new build, HVLS fans can help a project earn points toward Leadership in Energy and Environmental Design (LEED) certification by lowering energy consumption, creating a healthy indoor environment and air quality, and using less resources and equipment through HVAC systems. Although the number of credits earned varies based on each individual building project and type, HVLS fans can help projects earn credits under the Energy & Atmosphere (EA) and Indoor Environmental Quality (EQ) categories.

For the testing, two ignition locations were selected near the tip of the fan blade and under the fan hub. The former was selected to maximize fan effect based on fan performance data. The latter was based on observations of Phase One testing. The fan was centered between four sprinklers when sprinkler spacing was 3 x 3 m (10 x 10 ft). In the control mode density area (CMDA) sprinkler tests, where spacing was 2.4 x 3 m (8 x 10 ft), the fan was offset 0.3 m (1 ft) south of center.  [CREDIT] Photo courtesy UL LLC

For the testing, two ignition locations were selected near the tip of the fan blade and under the fan hub. The former was selected to maximize fan effect based on fan performance data. The latter was based on observations of Phase One testing. The fan was centered between four sprinklers when sprinkler spacing was 3 x 3 m (10 x 10 ft). In the control mode density area (CMDA) sprinkler tests, where spacing was 2.4 x 3 m (8 x 10 ft), the fan was offset 0.3 m (1 ft) south of center. Photos courtesy UL LLC

During the second phase of testing, a total of 10 full-scale fire tests were conducted between June and December 2010, evaluating the effect of the HVLS fans on the performance of both early-suppression, fast-response (ESFR) and control-mode-density-area (CMDA) sprinklers protecting both rack storage and palletized commodities.

During the second phase of testing, a total of 10 full-scale fire tests were conducted between June and December 2010, evaluating the effect of the HVLS fans on the performance of both early-suppression, fast-response (ESFR) and control-mode-density-area (CMDA) sprinklers protecting both rack storage and palletized commodities.

 

 

 

 

 

 

 

 

 

 

 

 

Market demands expand applications
Due to the large diameter of first-generation HVLS fans—up to 7.3 meters (24 ft) in some cases—they have traditionally been specialized for large industrial or commercial spaces. With the availability of smaller-diameter blades, small spaces now look to take advantage of the technology.

The slow-moving fans even have the ability to create a breeze in un-insulated areas such as a mobile outdoor worksite without use of air-conditioning. Within temporary structures, such as in marquee fair tents, the fans can be securely installed to a steel truss and implement air movement through crowds of people.

For more traditional building projects, HVLS fans can also be beneficial. Kaizen Martial Arts Academy in Jackson, California, is home to a 464.5-m2 (5000-sf) building where people of all ages study karate, Brazilian jiu-jitsu, and yoga. When the temperatures outside the facility rise to 26.6 C (80 F) or higher, the dojo begins to feel less like a training and fitness facility and more like a sweat lodge.

Taking less than a day to install, Kaizen’s large-diameter HVLS fan is now offering a refreshing breeze, while actually accelerating the rate of perspiration evaporating from the skin, and providing more than $1500 in annual energy savings.

This fan was installed to a steel truss during an outdoor trade show.  [CREDIT] Photo courtesy MacroAir

This fan was installed to a steel truss during an outdoor trade show. Photo courtesy MacroAir

High-end luxury
Fan systems are also offering plug-and-play packages, which simply require the power cord to be plugged in and the controls remotely connected via a standard cable connection. Since no external control panel is needed, the electrical wiring is minimized and the fan can be seamlessly integrated into the building’s aesthetics.

Next-generation HVLS fans also come with a streamlined profile, including on-board electronics packaged inside a power unit in case the fan may be more visible than in a larger warehouse or industrial space. Electronics can be pre-programed with variable frequency drives (VFD) to control the fan speed and use heat transfer of the aluminum extrusion to help cool the VFD.

With a cooler VFD, carrier frequency levels can be set outside the audible level to create a more silent fan, further integrating HVLS fans’ availability to meet the needs of diverse application demands.

Notes
1 Visit safetymatters.aonfpe.com/2011/1st-Quarter/Feature-Article.aspx. (back to top)

Michael Danielsson is engineering manager of MacroAir, a manufacturer of high-volume, low-speed (HVLS) fans found in warehouses, manufacturing plants, airplane hangars, agricultural arenas, and retail establishments. He leads the engineering department in developing innovative air movement solutions. Danielsson can be contacted by e-mail at engineering@macroairfans.com.