See the light and cut energy costs
Posted by keelynet on May 29, 2009
Another great way to save on lighting costs.
“Lighting is estimated to account for up to 25% of electricity bills in production facilities and a massive 60% in storage and warehousing. What’s more, rising electricity prices and an uncertain economy mean these figures are unlikely to decrease. This equates to a huge amount of money and energy. Efficiency boost – “For more than 10 years our premises were illuminated by metal halide lights, which we knew were probably inefficient,” he says. Each 800-watt halide lamp cost around £300 to run continually per year and emitted the CO2 equivalent of driving a family saloon car 14,000km. APS installed a total of 158 low-energy Eluma fittings across its Worcestershire facility. The lights use 80% less electricity than conventional bulbs via a T5 fluorescent fitting that has a maximum connected load of 230 watts – less than half that of traditional metal halide bulbs. This resulted in a 72% saving on lighting bills. “In a downturn, cost savings become crucial”, says Dockery. The fittings also feature a sensor system that controls light output when areas are occupied and decreases levels to compensate for incoming natural light. “We’ve been able to programme the fittings to vary the light output depending on their location, so those in production areas emit higher levels than others in storage bays,” says Dockery. A special reflector, which boasts a 95% reflectance level, means only 5% of light is lost when a surface absorbs rays. Bone says companies using low-energy bulbs will see a saving on lighting costs between 60% and 85% – a guaranteed low-risk investment with a high return, usually apparent within 12-36 months. Substantial savings – At flexible packaging manufacturer Amcor Flexibles, 175 energy-saving lights were phased in across production facilities and warehouses during 2008. Each fitting substituted two metal halide lamps but still increased overall light levels. “We now have the same levels at a lot lower cost,” says Amcor electrical engineer Steve Seward. “The new lamps are also cheaper to replace at £2-3 per unit compared to £20 per HID unit.” Seward initially estimated the payback period of the £47,000 project to be 18 months, but the recent energy price increases mean that will now be less than a year. He now calculates the annual energy saving to be £60,000, while the move has reduced the company’s carbon footprint by 236 tonnes a year.” – Source
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