Tuesday, August 9, 2016

LED vs Metal Halide: 3 Reasons Why LED Comes out on Top

All of us understand or at least discovered that converting from Metal-Halide (High Intensity Discharge) to LED will help you save cash.

But how much? What are the difference you or other motives ought to know about?

In this post, we break down all the variables which you should know about before making a decision to convert to LED from Metal-Halide. Here are the 3 reasons we believe Metal-Halide is won over by LED.

1. Lamp (Source) Efficiency Vs Fixture (System) Efficiency

Let us have a look at the info on a typical 400 watt metal-halide bulb. Well specifications can vary greatly, a visit to some popular on-line site that sells Metal-Halide bulbs reveals a brand new light bulb has the following specifications:

Color Temperature: 4000K
First Lumens: 32,000 to 36,000
Life Hours: 20,000

A recent white paper by the Dark Skies Society rated the mean lumens for a 400W Metal-Halide to be life expectancy to be lumens and the rated 20,500 around 15,000 hours. But for purposes of the discussion, we'll stick with the amounts we have been knowledgeable about.

There's lots of info that is fascinating to examine. First lumens is an amount that is high, but in fact, a Metal-Halide bulb starts off quite glowing and then drops its lumens fairly fast, settling in at a lower lumen output signal fairly fast. It is common to lose just as much as 20% in the first 6 months. So while 36,000 lumens seems remarkable, within be below 30,000 lumens. Lumen depreciation in a metal-halide bulb is comparatively fast. It's noticed that already at 50 % at half life of the light bulb, around 8,000-10,000 hours, lumen depreciation is

Likewise, let us look at the operating nature of the light bulb. A Metal-Halide bulb is omni directional. That means lighting fixture is dispersed in every way. So it creates as it does facing downwards as much lighting fixture parallel to the earth. You must assemble it, assemble it, and deliver it to where you are interested, to make this lighting fixture useful. In fixture design, you add a reflector to do that occupation. The principal issue with lighting fixture that is reflected is how powerful is the reflector getting the lighting fixture that bounces to the earth off of it. A lumen that bounces back into the fixture and bounces off the reflector is considered a reduction lumen. Is throwaway. Greater of the lighting fixture or just as much as 30% can be lost in this bounce that was reflective. So if we suppose the first lumens of the lamp at 36,000 if we do the mathematics of a metal-halide bulb in a high bay fixture lumens, after 6 months we'd anticipate the fixture successful lumen efficacy to be:

36,000 lumens - 20% (first lumen reduction) = 28,800 lumens

Lumens reduction from reflector bounce: 8,640

Total lumens after 6 months in Highbay fixture: 20,160

This doesn't consider shields or any lenses the fixture might have. Take into account, this is light bulb lumens, not fixture lumens, so anything else added that gets in the way of getting lighting fixture to the earth will always take far from lumens that are powerful.

Compare this to LED. If you consider a  fixture, like a Led Retro that replaces the Metal-Halide assembly, or a LED highbay, all the lighting fixture is directional, in that, it's directed to where it's needed. Reflectors aren't needed. You'll find nothing . In LED, it does occur when it comes to lumen depreciation, but it takes a lot more for it to occur. By way of example, our LED retrofit kits have a L70 (lumen depreciation to 70% of initial lumens) of over 100,000 hours. So where as Metal-Halide loses lots of lumens in the first 6 months of life, for a lot more LED tends to keep its lumens.

2. Using Life

As mentioned, the working life of a Metal-Halide bulb that is typical appears to be around 20,000 hours. Bigger light bulbs, around 15,000 hours., are like a 1000 watt Metal-Halide In terms of LED, there are various ways providers describe the life of the merchandise. One manner would be to mention L70. L70 just isn't a measurement of ending of life, but it's a measurement of lumen degradation up to 70% of initial lumens. This doesn't mean ballast or the driver another part might fail.

What we do understand is the life of a Metal-Halide bulb is around 15,000 to 20,000 hours. What we also understand is that at half life, it has recently lost 50% of its initial lumens. So while not dead, tremendously unsuccessful. For the record, 400 watts is still consumed by it though it's not half as dull.

Compare that to our Led Retro rated at 100,000 hours (L70). So by the time the LED head reaches 100,000 hours, you've done 5 Metal-Halide bulb replacements, maybe more.

3. Efficacy (lumens/watt)

This really is the precursor to another matter, energy savings, but the fundamental assumption is the more efficient the light bulb is, the more income you may save. Thus let us compute the lumen efficacy of metal-halide versus LED.

To compute lumen efficacy, you should take the complete lumens divide it by the absolute watts used up and generated. In the instance of of Metal-Halide, in addition, you must contain ballast draw. It's around 455 watts if you recorded the complete watts used up of a typical 400W light bulb. The ballast uses up about 15% more energy over and above the light bulb consumption.

So computing lumen efficacy for metal-halide: 36,000 lm / 455W = 79.12 lumens/w.

Let us compare that with our 150 watt Led Retro: 23,250 lm / 150W = 155 lumens/w. Nearly double of Metal-Halide.

And remember the golden rule: Efficacy Saves Cash! So if you are looking for a Metal Halide Replacement option for your Highbays, you should consider LED

Saturday, August 6, 2016

Before you buy - Some thought on purchasing LED Lights

It isn't news in spending less in your lights bill that LED is becoming the new standard. But with every new technology, the choices are rich and endless, and occasionally smart advertising conceals what actually is significant. Its simple, if you comprehend the technology. If your new to the technology, you must try to ascertain what is or isn't unimportant. Which makes the purchase choice even harder for those attempting to navigate this labyrinth of specifications and merchandise availability. And to confound the consumer more, there's lots of data being presented that isn't created based on any consented to standard. Read 10 distinct product leaflets on what the marketers consider is the appropriate remedy to replace 1000W Metal-Halide and everything will be read by you from a low as 24,000 lumens to 65,000 lumens. Or what one producer calls day white is than what another producer believes day white is complete different. The best guidance is walk through precisely the same procedure when we choose our products to sell we do. We look for efficacy, functionality, quality and great engineering. Let us break that down to what that means.
The LED Litmus Test

Are the LED Lamps UL or ETL Qualified. This can be the security evaluation. No one needs an unsafe product. The merchandise must not be unable to perform with no potential for danger. Are Energy Star or the bulbs DLC Rated? DLC (DLC) is a performance standard which makes sure the lamps are efficient and perform at a high standard. Recently the standard was expanded to include light controls, although it usually employs just to LED bulbs. Energy Star is a consumer standard that applies to many products including little LED screw in light bulbs. DLC didn't have a provision for screw in light bulbs, but has lately shifted to permit some screw in LED light bulbs although up until lately.

Are the factories ISO Capable? A lot are not, a lot say they're but are not. Some will say they abide by the ISO standards. What does that mean? Some will think of their own marketing buzz words that seem have become intelligent and great on paper, but are not ISO certified. To us, we are given the reassurance the products we provide our customers are assembled and analyzed within an exacting and consistent way with minimal number of danger of failure by ISO certificate.

The LED Efficiency Standard

What exactly is this? Well it really is efficacy, and the measurement, or a discussion of LED Effectiveness is called lumens/watt. Or how many lumens are you able to create from 1 watt of power. A lumen is a measurement of lighting fixture which is standard across all lighting fixture sources. With LED, efficiency is all over the graphs. The technology has been around for quite a while, and you are able to locate efficacy including under 100 lumens per watt if you examine the access to merchandise. The efficiency merchandise that is lower is commonly more value. But when you are doing the mathematics on how much is being spent on process over the life of the LED fixture, the savings in decreased energy spend immediately overshadow the savings at purchase time.
The difference in LED efficiency is growing so severe it is sensible to do payback evaluation between LED products. Case in point, our extremely efficient LED Retrofit Kits are at present available up to 165 lumens/watt. Two of our principal competitors are selling merchandise watt and 110 lumens/watt. The amount of cash you'll save in decreased energy consumption over the life of the merchandise is staggering. And we're of the belief that you will be converting over from Metal-Halide to conserve cash. Why not save all the money you can by getting the merchandise that is the most productive?

So just how can you begin to identify the merchandise that is the most productive? Two manners.

DLC Capable Merchandise. But only seeing DLC isn't enough. DLC is a standard of efficacy and performance. But there are DLC Premium, DLC Standard and 2 degrees. The DLC Premium Standard is the more efficient of the 2 standards. Products in DLC Premium are 20 % more efficient than DLC Standard. In the example above, our retrofit kits at 165 lumens per watt are 40% more efficient. Look for these two symbols and more to the point, try to find the DLC Premium Symbol. All our LED Retrofit Kits are DLC Premium Qualified.

2 Computing lumens per watt. Some sellers, and yet its simple will not provide this info. If you need to compute lumens/watt, take the number of lumens they record and divide it by the number of watts it uses up. So if 10,000 is produced by a LED Lighting Fixture lumens and uses up 100 watts Recall, anything in the 80-110 lumens per watt range is generally technology that is old
Color Temperature

Among the other issues we see is customers do not comprehend color temperature. Its not untypical for a homeowner to visit a Home Depot store and buy a LED lightbulb only find it it and to bring it home blue or too yellow. And if you have a look at the packaging, it is all confusing. You hear terms like Day White, or Natural White or Cool White in the place of talk in the universal language of color temperature. What does all this mean?

Here is an easy guide on which you should decide for what program

2600-3400K is a great option for a property program.

3900-4600K is a superb option for an office surroundings

4900-5600K is an excellent option for a fitness center, factory, warehouse or airport hangar

6000K+ is an excellent option for a jewelry store or in some lab surroundings.

The Guarantee - Read the small print

Another bit of advertising is the notion of merchandise guarantee. Once more, you're able to use DLC as your guideline. Being a DLC Capable Merchandise, they can be required to come with a 5 year guarantee. Obviously, it'd be excellent of the guarantee fine print was all no nonsense, as they'ren't consistently the situation. We've learned the actual narratives of 5 and 10 year guarantees that never get carried out because somehow there's always a claim that the mistake was due to installation error. Or the guarantees that promise which you must send the merchandise in if the problem is really a guarantee issue and it'll be established. We call the "10 year hope guarantee" because it's necessary to expect they'll process the guarantee claim. With our retrofit kits, follow the directions, keep them dry, and that is about it. You might be covered.

Questions or need more help? Feel free to contact us at 888 423 3191 or e-mail us at support@myledlightingguide.com. We might be greater than happy to answer any question which you may have.