LED issues in high bay applications


The lighting for warehouses, manufacturing facilities, industrial work spaces, big box retail and gymnasiums often consists of high bay fixtures equipped with and HID light source — usually metal halide lamps. The higher wattage metal halide bulbs used in the high bay ceiling fixtures provide the lumen output and general lighting distribution required for these applications.

Metal halide, which always requires connection to a ballast, offers intense, bright white illumination with relatively long lamp life — up to 20,000 hours. Compared to mercury vapor or high pressure sodium alternatives, halide compounds in the quartz tube improve color rendition which gives metal halide lamps the higher quality illumination often desired in high bay applications such as big box retail.

While metal halide has proved to be a desirable light source for high bay fixtures, the emergence of high lumen output LED replacement lamps for HID gives managers of facilities utilizing high bay...

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A lighting fixture is an electrical assembly used to output light into an environment. In the lighting industry, you may often hear the terms "

high bay

" and "

low bay

" lighting, which generally describes the space and the height of the ceilings involved. A high bay luminaire is a lighting fixture that is designed for industrial locations high above the floor or work plane. High bay lighting applications may include lighting systems designed for use in structures with high ceilings, or "high bays" which include warehouses, manufacturing facilities, large retail stores, athletic facilities, or the like where the ceilings can be 30 or more feet high.

LED high bay luminaires offer many advantages over traditional HID high bays, these advantages include lower energy consumption, higher outputs at higher drive currents, longer lifetime, improved robustness, smaller size, faster switching, and excellent durability and reliability. A significant problem associated...

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LED replacements utilize the existing HID MH ballast, so the retrofit is simply a matter of removing the HID bulbs and replacing them with LED in the same socket.

LED Offers Long Life Span, Lower Energy Costs, and Retrofit Kits HID Directly.

In addition, a key factor in determining if the added LED bulb life makes a retrofit cost effective is the cost of labor to replace the lamps after the initial installation. HID bulb replacement will require twice the labor compared to LED.

LED technology has potential benefits than long life and lower energy use. It also overcomes specific drawbacks of HID. And after DLC publish 3.1 version screw base at Nov.2015,there is high speed improve trend from HID to LED replacement in North American.

Finally, depending on the type of metal halide bulbs being replaced with LED, the quality of the illumination — better color rendering — can be achieved.In future 5years,HID retrofit is first choice for LED...

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While the DesignLights™Consortium does list “High-bay and Low-bay fixtures for Commercial and Industrial Buildings” as a category and lists some replacement lamps, there were no retrofit high and low bay product applications as of February 2012. However, many manufacturers are offering these retrofit kits.

Most of the focus by the U. S. Dept. of Energy Solid State Lighting program on developing LED products has been on purpose-designed luminaires. But with many existing sockets, manufacturers are likely to seek to fill this market niche with retrofit kits. It is hard to imagine that the performance of the retrofits will be as good as the performance of a purpose-designed luminaire,but perhaps “close enough” will be good enough for many if the cost savings are significant enough. Some manufacturers are providing retrofit kits and lamps for their traditional street lighting and interior troffer fixtures, so one can expect to see more retrofit products for other applications in...

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July 17, 2014

Cost and energy savings make more expensive LEDs economical, report concludes

The market for high-bay lighting in commercial buildings is undergoing a rapid shift from traditional, fluorescent luminaires and lamps to light-emitting diodes (LEDs). While fluorescent lights are expected to remain the best-selling technology for high-by applications over the next 7 years, falling prices and rising efficacy of LEDs will create a tipping point for the large-scale adoption of LEDs in this segment. Click to tweet: According to a recent report from Navigant Research, worldwide revenue for LED luminaires and lamps in high-bay applications will grow from $2.6 billion in 2014 to $7 billion in 2021.

“High-bay LED lights are still considerably more expensive than their non-LED counterparts, but payback periods have shrunk to the point where decision makers are choosing this lamp type based on cost savings and payback alone,” says Jesse Foote, senior research analyst...

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START Lighting’s 200W LED High Bays are designed in the traditional Hi-Bay look to easily replace existing Hi-Bays from 300-500 watts. These fixtures deliver light directed in the specified beam angle without any light loss. The dynamic LED patterns are encased in a non-breakable lens and are safe in all applications where shatter issues exist. START Lighting’s LED High Bay Fixtures provide superior ambient light coverage and energy savings for multiple applications. These popular fixtures allow quick and seamless installation reducing downtime and installation costs in addition to the significant energy & maintenance costs savings over 5 years. With our quick mounting options, our LED High Bay fixtures can be quickly positioned & repositioned as...

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Lighting for high bay areas requires high illumination, given the high mounting heights of 16 to 40 feet. Traditional lighting products in this range consume undue amount of energy and provide too much or too little light in the right area. LumQuest recommended LED high and low bay fixtures have custom controlled optics and distribution patterns to meet the illumination requirement while consuming less than 50% of the energy. Power consumption of LED units range between 60 to 160 Watts, replacing 150 to 400 watt systems (Special customized solutions are available for 1000 W traditional fixtures). Design factors taken into consideration include the driver, the controller, the optics, the LEDs, thermal issues, surge protection and interconnection. Addressing these factors enable the construction of a superior LED...

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