I've been trying to invest in LED lighting for almost a decade now. The promise of higher MTBF has been (to date) marketing hyperbole. They should last longer (in theory at least), but in reality they simply don't. Indoor and outdoor are both the same. Incompatibility with existing home automation equipment (most of which, such as X10, has simple Triac outputs) limits their usefulness even more (and NO, dimmable doesn't mean compatible).
The real change in the market has been their dropping cost along with their increasing lumens. This makes the disconnect between the MTBF claims and reality a little more palatable.
There has been some histry in regards to "eco-friendly" claims, where claims didn't hold up to the test of time.
I am specifically refering to the earlier compact fluroescent bulbs, which were suppose to last 10 years, but in reality only lasted about a year in many common usage situations. At $10/each, the user was expected to invest a substantial amount of money in a technology that had not withstood the test of time.
LED lighting certainly is an interesting technology, but it has not proven its true longevity yet. Government mandates are the driving force behind LED lighting, rather than successful real-world success. It has also forced manufaturing of light sources to another country. So, how much should we trust this technology?
True, there are applications where it has really proven cost effective, such as in traffic lights. But, my advice is to allow others to test this high-dollar technology that is rapidly changing. Holding off a year or two will dramatically reduce the cost, and increase confidence in the investment.
Yes, Chuck, it really clearly shows the difference--one of the best descriptions I've seen so far and gives a good perspective on why making the switch is more energy efficient and cost effective.
Excellent analysis. Even with all of the push behind LEDs, not too many decisions will be based on the facts (cost plus operating expenses) although you would expect commercial projects to take these factors into consideration. Thanks.
It would be interesting to see a video showing Central New York Raceway Park before (with halogen) and after (with LED). The look and feel of the lights is very different.
I like the comparisons between the LEDs and halogen bulbs. It really puts in perspective and makes me wonder why I haven't been using more LEDs. Great article.
Obviously LSDs have huge future potenial and hey are more and more popular with general users,however the price is still abit high. Also all hat circuitry inside has to be somehow hadled after he bulb is done.
Thanks for this article, Emily. It's good to see the potential for LEDs on this kind of grand scale, and I like your cost-comparison breakdown. I think sometimes people just see the initial price tag and think short-term without realizing the long-term cost savings. While it's good to live in the moment, when it comes to saving energy and reducing any type of pollution, I think it's far better to think ahead a bit.
For 3D printing to make the jump from rapid prototyping to manufacturing, engineers will need to find easier ways to move products from their CAD screens to their printers.
Gigabit and PoE are two networking technologies moving ahead in tandem as industrial users power remote Ethernet devices such as IP security cameras at 1,000 Mbps over existing CAT5 cable.
New versions of BASF's Ecovio line are both compostable and designed for either injection molding or thermoforming. These combinations are becoming more common for the single-use bioplastics used in food service and food packaging applications, but are still not widely available.
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For industrial control applications, or even a simple assembly line, that machine can go almost 24/7 without a break. But what happens when the task is a little more complex? That’s where the “smart” machine would come in. The smart machine is one that has some simple (or complex in some cases) processing capability to be able to adapt to changing conditions. Such machines are suited for a host of applications, including automotive, aerospace, defense, medical, computers and electronics, telecommunications, consumer goods, and so on. This radio show will show what’s possible with smart machines, and what tradeoffs need to be made to implement such a solution.
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