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DHID (Digital HID) Lighting Reduces Industry Lighting Expenses by 50%+

Application Examples

Street Lighting (Municipality) Applications:

Street Lighting Project – Pittsburgh, PA, USA.


• Replaced 150W and 250W HPS utilizing core and coil (magnetic) ballasts with dimmable DHID 100W digital ballasts in existing cobra head fixtures.
• A simple plug-and-play ballast retrofit or a simple replacement of the entire cobra head lamp fixture based on the DHID Digital Ballast.
• DHID system favoured over competitors LED based design; DHID offered better performance and price.
• Reduced inventory stock/costs; one DHID ballast powers inexpensive MH, CMH and HPS bulbs.
• Excellent ROI; low maintenance/consumable costs (only inexpensive bulb need be replaced every 30,000hrs+).
• Total direct savings: 72.5Watts/hr per fixture (42% savings) for magnetic 150W application and 187.5Watts/hr per fixture (65% savings) for 250W application; calculations including magnetic ballast energy losses (approx. 15%).
  
  

Factory/Warehouse High-Bay Lighting (Industry/Commercial/Retail):

HEINZ Ketchup Food Manufacturing Plant – Southern Ontario, Canada.


• Replaced existing 320W MH fixtures utilizing core and coil (magnetic) ballasts with dimmable DHID 150W digital ballast fixtures (CMH lamp).
• Measured Lux (lx) at the ground before and after installation (mounting height of 26ft.); old 320W MH produced 120lx - New DHID 150W produced 455lx (i.e. a most significant 73.7% improvement in light quality/brightness at the ground for over half the electricity consumed)
• Reduced over-all maintenance/consumable costs since DHID powered lamps do not degrade in light quality or brightness the entire 30,000hrs+ MTBF of the HID bulb.
• Total direct savings: 218Watts/hr per fixture (59% savings); calculations including magnetic ballast energy losses (approx. 15%).
  
  
  Toyota Automobile Assembly Plant – Southern Ontario, Canada.
  
  
• Replaced existing 400W MH fixtures utilizing core and coil (magnetic) ballasts with dimmable DHID 250W digital ballast fixtures (CMH lamp).
• The new installation not only resulted in significant energy savings but also provided 20% additional lumens for the area and thus leading to the elimination of 30-40% of the existing fluorescent task lighting.
• Return on investment justified with the low buying cost and performance of DHID lighting; maintenance/consumable costs of DHID favoured over LED, Fluorescent and Induction lighting.
• Total direct savings: 210Watts/hr per fixture (54% savings) with DHID 250W setting; customer can dim to the 100W, 135W, and 150W, settings for up to 360Watts/hr per fixture (78%) savings; calculations including magnetic ballast energy losses (approx. 15%).

Greenhouse Hydroponic Lighting Applications:

• Retrofit/Replace existing 1000W HID fixtures utilizing MH, CMH or HPS bulbs utilizing core and coil (magnetic) ballasts with dimmable DHID 575W digital ballasts or DHID fixtures (CMH, MH or HPS lamp).
• Or Replace/Retrofit existing 1000W MH fixtures with 1000W-2000W+ digital ballasts to further increase plant growth yields in a shorter timeframe.
• DHID digital high frequency ballasts operate within the most advantageous 100-200 kHz light frequency (Sun = 100kHz) and maximize the energy efficiency and mean time before failure specifications of MH, CMH and HPS lamps.
• Greenhouse operators can now maximize the return on their lighting investment and profitability due to the higher energy and electrical efficiency of the DHID digital ballast.
• Low cost of investment including reduced maintenance/consumable expenses make DHID the most financially viable lighting solution for greenhouse operators today.
• Return On Investment; at $0.10/kWhr, a DHID 575W digital ballast operated 12 hours per day, 365 days a year (4380 hours) will be paid back in 1.4 years.
• Total direct savings: 575Watts/hr per fixture (50% savings); operator can use DHID 1000W+ to increase plant growth yields/reduce grow time for less electricity expense than their existing magnetic based 1000W MH or HPS HID lighting system. Calculations including magnetic ballast energy losses (approx. 15%).

Sporting Arena/Event Lighting Applications:

Ice Hockey Arena Installation – Southern Ontario, Canada


• Replaced 1000W MH fixtures utilizing core and coil (magnetic) ballasts with dimmable DHID 575W digital ballast fixtures (CMH lamp).
• Immediate increase in energy savings and improvement in light quality and brightness at the ice surface.
• At full power (575W setting), end-user noted it was too much brightness reflecting off of the ice service. End-user was able to dim the 575W fixture to the desired setting; any of 360W, 400W, 460W, and 575W.
• Return on investment is 3 years or less.
• Total direct savings: 575Watts/hr per fixture (50% savings) with DHID 575W setting; customer can dim to the 360W, 400W, or 460W settings for up to 790Watts/hr per fixture (69% savings); calculations including magnetic ballast energy losses (approx. 15%). Total project savings of 94,000 Watts per hour at $0.13/kWhr.

Airport Area Lighting Applications:

Airport Area Lighting – Dominican Republic


• Replaced existing 1000W MH fixtures utilizing core and coil (magnetic) ballasts with dimmable DHID 575W digital ballast fixtures (CMH lamp).
• Airport realized an instant savings of 50%. The DHID powered 575W bulb produces a brighter white light than the magnetic powered 1000W bulb.
• Consumable costs and maintenance costs reduced; inventory also reduced since one DHID Digital Ballast powers MH, CMH and HPS bulbs.
• Total direct savings: 575Watts/hr per fixture (50% savings) with DHID 575W setting; customer can dim to the 360W, 400W, or 460W settings for up to 790Watts/hr per fixture (69% savings); calculations including magnetic ballast energy losses (approx. 15%).

Renewable Energy Lighting Applications:

• Retrofit existing HID based Street Lighting posts with Solar/Wind renewable energy sources for independent operation from the utilities power grid; or only partial draw from the utilities with the option to feed excess energy harvested back to the electrical grid.
• Given the 118lm/W performance of the DHID lighting system, end-users can expect shorter Solar/Wind system battery charge times and extended light on times.
• Solar/Wind produced energy can be used to efficiently power any of the DHID Digital Ballast powered lighting systems to meet a variety of indoor and outdoor lighting applications.

Light Management Software Applications:

• Light Management Software (LMS1A) utilizes wireless communication to provide ultimate control of individual DHID lighting fixtures in any facility.
• LMS1A allows you to manage light levels by establishing zones and dictating the light levels within those zones at various time periods throughout the day.
• End-user now has the option to simply turn off or dim areas of the building during off hours while providing full illumination in critical areas; e.g. dimming the entire production facility 50% during lunch break.
• LMS1A management software allows you to establish a control strategy that meets all your lighting needs while driving significant cost savings.

Digital HID (DHID) Product Benefits and Specifications:

• Significant (up to 75%) saving of electrical energy and maintenance costs
• Automatic loss-of-lumen compensation as lamp ages; lamp quality brightness will degrade only <5% over the entire 30,000hrs+ MTBF of the MH, CMH or HPS bulb.
• Produces up to 40% more Lumens/Watt than core-and-coil (magnetic) ballasts without losses (DHID luminous efficacy specification is 116lm/W)
• Increased life expectancy (100%) of the lamp compared to core-and-coil (magnetic) ballast technology.
• Highest efficiency ballast on the market: 97%, DHID Digital ballast does not generate heat – this improves the efficiency of HVAC and Refrigeration systems in building and warehouse applications.
• 50% dimming of incoming power produces additional cost saving.
• Optional motion sensor control through RF input; control/statistical Light Management Software (LMS1A) available allowing full control of lamp grid/network maximizing electricity cost savings.
• Virtually no loss of electrical energy. Watts consumed = Watts produced
• Conventional core-and-coil (magnetic) ballasts create significant heat and operate at a 25% loss in terms of Watts consumed and Watts produced.
• Very easy retrofit installations for Metal Halide (MH), Ceramic Metal Halide (CMH) and High Pressure Sodium (HPS) lamps (DHID Digital ballast operates any of these types)

DHID (Digital HID) Vs. LED; Myths and Facts:

Facts about LED’s
• LED’s present many advantages over traditional light sources including lower energy consumption, longer lifetime, improved robustness, smaller size and faster switching. However, they are relatively expensive and require more precise current and heat management than traditional light sources.
• It should be noted that high-power (=1W) LED’s are necessary for practical general lighting applications. Typical operating currents for these devices begin at 350 mA.
• One of the highest efficiency ratings of high-power white LED’s is claimed by Philips Lumileds Lighting Co., with a luminous efficacy of 115 lm/W (350 mA). Please note that these efficiencies are for the LED chip only, held at low temperature in a lab. In a lighting application, operating at higher temperature and with drive circuit losses, efficiencies are much lower.
• Independent testing of commercial LED lamps designed to replace incandescent or CFL lamps showed that average efficacy was about 31 lm/W in 2008 and tested performance ranged from 4 lm/W to 62 lm/W) compared with 100-116 lm/W of DHID lighting systems.
• Solid state devices such as LED’s are subject to very limited wear and tear if operated at low currents and at low temperatures. Many of the LED’s produced in the 1970s and 1980s are still in service today. Typical lifetimes quoted are 25,000 to 100,000 hours but heat and current settings can extend or shorten this time significantly.
• As a leader and one source supplier of advanced lighting systems for commercial and industrial lighting applications, including DHID and specific LED lighting products, Accendo Electronics has studied and field tested both LED and the next generation Digital Ballast powered HID (called Digital HID or DHID) technologies for applications requiring long light penetration and retained light quality over extended time periods. In our research, we uncovered key myths and facts about LED’s you should consider when deciding on your project lighting.

Myth: LED Lighting Life Expectancy is 100,000 Hours Plus
• False! Manufacturers claim mean time before failure (MTBF) ratings on LED’s to be 50,000 hours to 100,000 hours or more. Although in cases LED’s do meet these extended MTBF specifications, this number must be directly correlated to the LED application itself. Factors such as mounting distance, the lumens per Watt (lm/W) rating, and operating temperature all contribute to the reduction of the LED’s MTBF. Realistically, LED’s used for street lighting, or high-bay warehouse applications for example, may be considered to be failed at 30,000 hours or sooner due to the significant light diminishment incurred in the time stages of the LED’s operation.
• The most common symptom of LED (and diode laser) failure is the gradual lowering of light output and loss of efficiency. Sudden failures, although rare, can occur as well. Early red LED’s were notable for their short lifetime. With the development of high power LED’s, the devices are subjected to higher junction temperatures and higher current densities than traditional devices. This causes stress on the material and may cause early light output degradation. To quantitatively classify lifetime in a standardized manner it has been suggested to use the terms L75 and L50 which is the time it will take a given LED to reach 75% and 50% light output respectively. L50 is equivalent to the half-life of the LED.

Facts:
• The LED light quality diminishes or dims over the operating lifetime of the LED bulb. This degradation in light should be considered when reviewing the MTBF of LED’s since the light emitted at the LED’s life start is not equal to the light emitted at the bulbs half-life or life-end. If the LED bulb cannot produce the light output originally specified, it is a form of failure.
• Over time, heat created by LED’s also has an adverse effect on the systems light quality and MTBF. Depending on the class of the LED bulb used, factors such as powder coating (filter) degradation and the material used to manufacture the LED lens, further add to the truism that LED’s do not necessarily meet their manufacturer’s specified MTBF ratings and lighting quality claims.
• DHID equals or outperforms the longevity of LED in most industrial and commercial applications at lower costs. The integrated microprocessor of the DHID doubles the life expectancy of the HID lamp by maintaining full level of illumination up to 28,000 – 30,000 hours.
• Studies have proven that DHID used as a direct replacement and mounted at the same distance as the original HID lighting, outperforms LED in many quantifiable measurements of energy efficiency and light penetration. DHID offers a market leading lumens per Watt rating of 114 lm/W – 118 lm/W (which is 25% – 30% above LED’s lm/W rating) and therefore delivers higher energy efficiency, greater light penetration, and quality light up until its 30,000 hours MTBF; and all for a fraction of the cost of LED.

Myth: LED’s Project/Penetrate Light at Long Distances
• False! Our studies proved that LED’s are not well suited for projecting light efficiently at distances exceeding 15ft (4.5m approx.).

Facts:
• At a typical street light height mounting distance of approximately 32.8ft (10m), the foot-candle (fc) measurements of the light emitted from both LED and DHID were recorded at the ground:
  • 100W LED street light produced 0.75 foot-candles
  • 70W DHID with a 70W Ceramic Metal Halide (CMH) lamp produced 1.75 foot-candles
• For street lighting applications the high lumens per Watt rating of DHID provides the best value delivering higher energy efficiency, greater light penetration, and quality of light over time.

Where to Use LED Fixtures:

• Industrial and commercial applications where useful light penetration would not exceed 7 – 8 meters such as commercial room lighting, exit signs, target illumination in retail stores and others.
• Flash lights, and other utility lighting.
• Instrument panel lights and other back lighting applications.
• Industrial and architectural back lighting, and other decorative applications.

Why is DHID (Digital HID) Preferred for Street Lighting and High-Bay Lighting Projects?

When selecting a lighting system, significant consideration should be given to the performance, cost, and life expectancy of both solutions. Given the poorer lumens per Watt rating, high initial expense and realistic wear data of LED’s, we determined the DHID solution to be the better value.


• Progressively thinking end-users agree that DHID is the more robust lighting solution with value added benefits not offered by LED; initial cost of investment, longer range of light penetration, and low maintenance costs were noted.
• With MH, CMH or HPS lamps, the end-user can expect brighter penetrating light at the ground, with 30,000 hours of life expectancy and less than 5% degradation in light quality/brightness over the lifetime of the bulb. When a DHID system HID bulb fails, only the inexpensive bulb itself needs to be replaced making it a most cost-effective alternative to expensive LED array replacement, maintenance and consumable inevitabilities.

Accendo Embraces the Use of LED’s for the Following Applications:

• Wall packs and canapé light fixtures (currently under development).
• Panel lights for architectural and special purpose lighting applications (currently under development).
• Exit signs.