Corona™ LED Panels – the Fluoro Troffer’s better looking, more efficient cousin!!

Troffers, troffers, everywhere!!  They literally have companies pulling out their hair!!

 

Poor rhyme, but the sentiment is reasonably accurate.  T8 (twin 36W fluorescent tubes) in recessed fittings (troffers) are probably the most widely used fittings in Australia (or at least a close second to MR16 spotlights)!  Most offices, be them corporate, commercial or industrial are fitted with these relatively inefficient eyesores.

They have certainly served their purpose over the years, but any of us who have worked under them are all too familiar with many of their less than endearing qualities which include:

• Ugliness.  Seriously.  With their often cracked diffusers, different colored tubes, bug carcass littered interiors, these fittings are about as appealing as a lava enema. 
• Flicker, hum, other unwanted stimulation!  Certainly improvements in ballast types have improved both issues, but improvement is still a long way from being completely fixed.
• Power hungry – 72W +ballast per fitting. Even at relatively high efficacies (80lm/W-100lm/W) the DLOR is still low which results in relatively low efficiencies (usable light).
• Mercury.  Hg.  No matter how its written mercury is not only a potential hazard if a tube is broken or disposed of properly, but best case scenario it’s expensive to recycle.  
•  Low CRI, colour shift, and other problems with colour rendition, not the best options if you need to see colours correctly!
• Size – troffers are typically deep fittings (to house tubes, ballasts, reflector) and not ideal for applications where space is sparse.

What’s the alternative – for retrofit or new applications our Corona™ LED Panels represent EXCELLENT value for money, and provide:

• ~50% reduction in power use, our standard slimline Corona™ Panel is 38.5W – the average T8 troffer is ~80W (72W + ballast).
• 50,000 hour lifespans (L70) eclipses typical lifespans of fluoro tubes (~15,000 hrs) – cutting maintenance and replacement costs.
•  Ridiculously good looking.  The homogenous colour distribution gives the appearance of skylights, and with no entry for “critters” they maintain their clean/cool look for life.
• Shhhh…no audible hum from the fittings or led drivers.  It’s no wonder we supply a lot of libraries.

  

  Corona™ 1200x300mm 40W Ultra-slim Panel

• No Flicker either – on/off in an instant and dimmable versions perfect for ambient light or motion sensors.
• CRI >80 – better colour rendition, and better still if required with a CRI>90 version.
• No mercury, no toxic chemicals, and if you drop one no broken glass.

189 Coronation Drive, Brisbane

One final point is glare.  While the entire usefulness of the UGR can be debated, we can state that our panels typically fall below 19 on the index, and with our prismatic diffuser options they fall well below.

Considering the advantages to making the shift to our Corona™ and their relatively low price, it makes a lot of sense (and cents) to make the switch!

You can view our Corona™ range of panels via our website - http://www.empyreanlighting.com/products/product-series/corona-led-panels/

Why You Shouldn’t Buy a High Bay Which Looks Like a High Bay?!

NOTE: Quick answers below in RED
If you’re shaking your head at the moment, I don’t blame you.  The above statement is logic which escapes consumers and LED luminaires manufacturers alike… including Empyrean Lighting for a period of time!

An overriding philosophy in the development of new LED luminaires and lamps has been to design products that either 1) look exactly like it’s traditional counterpart (luminaires) or 2) works/fits in a traditional fitting for ease of retrofit (lamps). 

The merits and inherent problems of point #2 will be the topic of a future post, but here I would like to address point #1, and specifically in relation to high and low bay lighting.

Metal Halide High Bay (Traditional High Bay Light)

Let’s firstly consider a traditional high bay light used typically in industrial warehouses for close to the last century.  They are usually ~400W metal halide, mercury vapour or high pressure sodium lamps which fit into the large conical fittings where the lamp is recessed into the bell shroud which extends ~.5m below the ballast, starter, and other control gear.

These lamps are relatively inefficient, use large start-up currents, contains significant amounts of mercury, are difficult to dim or control, have multiple failure points, do not start-up immediately (re-strike time) and have maximum lifespans around 20,000 hours. These facts have made replacement of this technology a prime target for consumers and LED luminaire manufacturers alike.  

The problem is that both groups are trending toward designs which mimic the traditional design and appearance the high bay light.  Whether the lack of vision is due to trying to promote consumer confidence by minimizing change, or a lack of creativity by designers, one can’t be sure.  But what is apparent is that substituting these radically different light sources within the same design does play to the strengths of the LED, and worse will leave consumers disappointed.

Consider the following reasons to choose a purpose designed LED highbay (such as our Andromeda Series) over the alternative – layman’s terms in red:

1. Design – LED light sources are uni-directional by nature as opposed to metal halide or other filament style high intensity discharge (HID) luminaires which are omnidirectional.  To put a single source, restricted beam angle into a luminaire which further restricts the beam angle (bell reflector) is, frankly, counter intuitive and ultimately does not play to the strengths of the technology. Tight beam angles (LED) + a bell shroud = limited light spread & use.
2. Thermal Management - single source high bay luminaries count largely on conduction of heat from the diodes (which are very hot - given they are positioned together as a single source) through large heat sinks. This does not work in a typical warehouse environment, because to get the heat sink to work effectively there must be heat exchange between the surround air and the heat sink material. Often the ambient air temperature in the ceiling of a warehouse can exceed 50⁰C - the heat sink will likely have an equal temperature to this, meaning there will be no exchange at all with the atmosphere, and your LEDs will "cook". Reducing performance, increasing failure rate and shortening life expectance. Our Andromeda luminaries are individually places, and each diode uses both conduction and convection to ensure that the heat is removed efficiently form the diodes even in areas with high ambient temps (one of the reasons we do so much mining work - warehouses in the outback are as hot as you will find on earth). Big, heavy, chunky heat-sinks are not all their cracked up to be in high ambient temperature environments... like most of Australia.  
3. Single Point Failure - simply – you have a single point of light intensity with no 

   

   Common LED High Bay Solutions

   redundancies – if the diode fails the luminaire is “dead”.  The Andromeda's individual pixels are wired so that a single pixel failure (which is very rare) does not affect the rest of the luminaire.  Redundancies in any system prevent total failure – single source LED luminaires typically do not have ANY redundancies.
4. Restricted driver (ballast/transformer) access – the most common failure on an LED luminaire is the driver.  The drivers on these units are buried and difficult to access and replace.  Replacement drivers were also not available from the manufacturer who preferred to replace the entire luminaire.  Our drivers are rated for the life of the luminaire, however, should one fail they are easily accessible and quick release, meaning a driver change takes less than 120 seconds. Accessibility to drivers (transformers) are key – should they fail quick changes keep maintenance costs low.
5. Beam Angle & Variance – this luminaire projects a very tight beam of high intensity light at the workplane.  This results in quite a few issues, but two of the biggest are glare and variance.  A single high intensity lights source can temporarily blind workers and is more likely to cause glare issues.  Also, the higher areas of light intensity on the ground cause variance issues – which means that an even light spread is not achieved -  again, potentially causing issues with workers (low visibility, eye fatigue).  The Andromeda, due to multiple light sources all individually lensed avoids both issues and provides a very homogenous level of illuminance throughout the facility (this can be seen on DIALux/AGI32 reports). Multi-point LED high bays (such as the Andromeda) provide more homogenous light and less glare than single point sources = “better light”.
6. Strength of fitting – the bell reflector  on these luminaires is weak – even the slightest impact can dent it which requires replacement as it will affect the light distribution. These fittings are also only rated as IP54 – a significant leak in the ceiling could cause major damage to the luminaire or circuit.   The Andromeda fitting is IK08 and IP66 – tough as nails. Further, as the Andromeda is lower profile it is less likely to come to grief with forklifts or equipment working below. Throw a basketball at an LED bell shaped high bay… now throw one at the Andromeda… don’t have a ball, stay tuned to our website and we’ll be doing this for you soon enough!
7. Light Projection Surface – the large lens on this luminaire means the possibility of acute build up of dust and other particles which limit light transmission.  Unlike a HID luminaire these particles are not burned off – so they can pose a real issue.  The Andromeda uses a very small surface area for light transmission which is also electrostatically charged meaning very little dust/dirt can settle on our lenses and light transmission is retained even in the dirtiest, most challenging environments. Less surface area = less cleaning, and IP66 means quick efficient cleaning by power washer or air jet.
8. In a recent project, another supplier had recommended bell shaped LED highbays at 250W and 100lm/W – the Andromedas we specified (after simulating to required lux levels) were 200W and 110 lm/W.  Significant power savings when weighted up over ~222 luminaires

   

   Andromeda Flood Luminaire

   in the project.  Further, due to the tighter beam angles of the LED bell-shaped luminaires 10% more luminaires would have been required to meet the lux levels provided by our solution.  Choosing a better, purpose built Andromeda series luminaire will save you money – both short term and long term. 

So if you’ve made the tough decision to switch over to LED technology for your facility, please make the easy decision to choose purpose built LED technology to ensure your project is a success.

Contact us directly with any queries or concerns! info@empyreanlighting.com

How Cheap LED Lamps Actually COST You Money...

Yep, you heard me right, save a bit of $$$ up front on “average” LED lamp technology and it could cost you in the long run.  Here’s three reasons why:

1. Output – “replaces a 50W dichroic” or “replaces a 100W bulb” – if either of those sound familiar to you and you didn’t spend over $50 for your lamp, you’re sure to be disappointed!  The reality is that there are VERY FEW LED lamp replacements which produce as much light as their inefficient predecessors.  Now, this isn’t always a bad thing, because if you weigh up the advantages (most houses are over illuminated, lower power, slower lumen degradation, tighter beam angles), this might really work for you.  However, if you are replacing two 50W dichroic bulbs with 2000lm and wide beam angles which you use to light a large area, you are almost certain to be up for disappointment with your new very efficient, but very spotty LEDs.

2. Lifespan – if you buy cheap LED lamps one area the manufacturer is certain to have skimped on (so they can offer that awesome price) is proper design and low grade heat-sink material.  This is an issue because in small LED lamps the main game for both performance and lifespan is to properly thermally manage the lamp.  There are two types of thermal management – active – commonly with a built in fan = ridiculous (how long is your fan going to last), or passive – through intelligent design and super-efficient (and slightly expensive) heat sinks.  Guess which method we subscribe to? 

3. Compliance – nice lamp… does it work with your current transformer(s)?  No?  Pity.  Nice paperweight.  MOST LED 12V lamps (dichroic) will need a compliant transformer, and even then they may not dim properly on your current system.  Empyrean Lighting’s Adaptive Technology lamps WILL work (which includes dim) on EVERYTHING – or send it back.  Simple… like my haircut.

So, if you bought cheap LED's that don’t have reasonable output, won’t last, and don’t work on your transformers/dimmers then you really have to ask if they’ve really saved you any money at all?

This is the bit where I tell you that by spending a bit extra you can have awesome LED technology that performs, lasts (30,000 hours+), and works on everything.

www.empyreanled.com.au

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