“Every Revolution begins with a SPARK”

AVERAGE OF 50% SAVING

COMPANY PROFILE

UNDERCOVER PARKING AT CAPE TOWN LODGE: LED TUBES

Karen CarrollSales & Marketing Gautengkarenc@revolutioness.co.za

www.revolutionenergysavingsolutions.co.zaJHB: 078 947 8860CPT: 021)701-0381

“Every Revolution begins with a SPARK”

AVERAGE OF 50% SAVING

Magnetic Induction Lamps offer an economically viable and environmentally friendly way to

improve lighting conditions while reducing energy consumption, reducing Co2 production

from power generation, and reducing operational and maintenance costs. Cost and energy

reductions can be between 35% and 70% depending on the application.

People who see the Induction Lamps remark at how bright they appear and the improved quality

of the light because Magnetic Induction Lamps offer high Scotopic/Photopic ratios. Scientific

studies have shown that having a high S/P ratio is beneficial as it improves visual acuity, and

can reduce fatigue and eye strain thereby improving working conditions. Studies have shown

that working under higher brightness scotopically enhanced lighting can have beneficial

psychological effects leading to improvements in productivity.

If we are lighting spaces for the best vision, then scotopically enhanced, energy efficient, low

maintenance, environmentally friendly green lighting, such as Magnetic Induction Lamps, are the

best choice.

INDUCTION VS FLUORESCENT T-BAYS & LED:

Megabays, or T-bays as they are also known, consist of T5 fluorescent fixtures mounted in a shoe box style fixture, and are meant to replace traditional 400w high bay fixtures. They are normally supplied with 4 x 54w T5 lamps, and use electronic control gear.

Because they cost less to buy than induction high bays, they may seem like an attractive alternative to induction. However, with commercial and industrial lighting, it is critically important to look at cost of ownership, and not just the cost of the initial purchase.

“Every Revolution begins with a SPARK”

AVERAGE OF 50% SAVING

Like induction lamps, the current T5 lamps are producing around 85-90 lumens per watt. However, to get this number of lumens per watt out of a lamp that uses electrodes, means that these units are being driven very hard, and their lumen depreciation will be much more dramatic than induction lamps. Remember that the induction units are electrodeless, so they do not suffer from electrode depreciation, as happens with conventional type lamps.

The lifespan of the T5 lamps is supposedly 20 000 hours. However, due to their rapid lumen depreciation, the lamps will need to be replaced much earlier than 20 000 hours. So in a sense they suffer from the same problem as CFL lamps, whereby they start of reasonably brightly, and then over a relatively short space of time, become duller, meaning that safety and productivity is compromised.

To take into account the rapid lumen depreciation of the T5's, many lighting engineers and designers over spec the number of Megabay fittings required, as they know that relatively(compared to induction) rapid lumen depreciation will take place.

Due to their quick lumen depreciation, and short lifespan, regular maintenance will have to be performed on the Megabays, to keep them operating on a level close to when they were installed. Whilst replacing fluorescent tubes in an office environment at 2.5 metres is relatively easy, this cannot be said in a factory environment, where heights are normally over 6 meters. This combined with machinery, and 24 hour operations in most instances, means that any maintenance work, can hamper production, which has cost implications.

Furthermore, many Megabays come without lenses, meaning that both lamps and reflectors are exposed to dust, and industrial smog within the working environment. This leads to the reflectors becoming dull, further contributing to the decrease in light intensity and light quality. Once these reflectors become dulled, it is impossible to get them back to original condition.

All our induction high bays are sealed with 4mm tempered glass lenses, meaning that both the reflector, as well as the lamp are kept in pristine condition. This ensures that light quality and light quality is not adversely affected, and light output remains very close to when the units were originally installed.

The lamps and control gear of the Megabays are usually not supplied with any form of warranty. The rising costs of parts, and labour needed to maintain these fittings, makes them far more expensive to own compared to long lifespan induction lighting.

“Every Revolution begins with a SPARK”

AVERAGE OF 50% SAVING

Our induction lamps are supplied with a 5 year warranty, and the power supplies with a 3 year warranty. Due to their very long lifespans, and these warranties, maintenance costs are virtually zero.

So to reemphasise. The Megabays may seem more attractive initially due to their cheaper cost compared to induction. But their much shorter lifespan, and lack of warranties mean that whatever is saved at purchase, will quickly be lost due to much higher maintenance costs, compared to induction. In other words, their cost of ownership of the Megabays, is far higher than induction, making them a poor choice for any company wanting to reduce operational expenditure.

INDUCTION VS LED

Moving onto LED. If you were running a jewelary shop, where you had watches or rings on display, then LED would be your first choice. However, it doesn't work in an industrial application.

LED's are very sensitive to heat. They last longer in Northern Europe where the ambient temperature is far lower than here in South Africa. If you look at all the countries in the Middle East, where temperatures are very high, like here in South Africa, they're installing induction streetlights, rather than LED, as the extensive trials they've done, have proved that LED doesn't last when ambient temperatures are high.

Look at the massive heat sinks that come with all led lights. This tells you they have a problem with heat. Heat in this instance is wasted energy.

Our supplier has over 6000 induction streetlights installed in Johannesburg for City Power. When the tender was submitted, the City Power guys told them that if they receive a tender document, and they open it and see it is for a led streetlight, they close it and put it to one side, as they are not interested in led.

For years, they've had hundreds of companies giving them led lights to test and they have tried them all, and they know they don't work.

We are comparing technology with technology here. It doesn't matter if the LED is in a streetlight, or a high bay.

“Every Revolution begins with a SPARK”

AVERAGE OF 50% SAVING

LED is a very directional light, which means that directly underneath the high bay, you will get a high lux reading, but step a metre or two off to the side, and lux levels fall off significantly. Led also has a lot of glare, which causes eye strain and headaches, especially with long shifts. Also when forklift drivers are loading and offloading off high racks, the glare from the eye is detrimental to safety, as it effects vision. Glare is not a problem with induction.

Led is rated at 50 000 hours of life, and induction at 100 000 hours. Anyone who says that led is running to 100 000 is not basing that on a 24/7/365 burn cycle. Led is currently running at 65-70 lumens per watt, compared to induction's 85-90 lumens per watt.

Also led has a much more rapid lumen depreciation curve compared to induction.

Last but not least. Led is normally at least twice the price of induction.

So to summarize the benefits:Financial:Cost effective – average of 50% saving.Reduced maintenance costs due to extended lifespan.Low heat generation reduces air conditioning costs in summer.Improved productivity due to better light quality.In store products potentially appear more appealing due to improved colour rendition (potential to increase sales.)5 – 10 Warranty on lamps and ballasts.Less waste on lamp replacements.Reduced carbon emissions - only 0.0546 kg of CO2 emitted for every 1kWh generated.Reduced coal burning for electricity generation – 0.38kg of coal burnt for every 1kWh generated.Reduced ash from burnt coal – only 0.1292kg of ash produced for every 1 kWh generated.Saves water – only 1.32 litres of water used for every 1kWh generated.Improved light quality and output.

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“Every Revolution begins with a SPARK”

AVERAGE OF 50% SAVING

I hope these points I have raised will be of some benefit to you, when it comes to you making a decision.

May I suggest that your finance department look at this project from all aspects, but most importantly from a NPV (Nett Present Value) perspective.