Case Study #1
A lighting designer called us one day regarding a custom built light fixture he had installed in the atrium of a facility into which he had put a number of LED-based MR-16 lamps. He reported that the transformer had failed and the lights were blinking on and off. Initially the transformer was suspected but after further discussion it was discovered that the MR-16s were installed in such a way that they were recessed inside of an enclosure. It was determined that this, along with the high ambient temperature due to solar loading, led to overheating of the lamps which in turn caused the lamps to malfunction and stop working. The designer was then able to modify the fixture and install a fan to increase the air circulation and thus resolve the problem.

Case Study #2
A store owner contacted us regarding the large marquee sign on the sides of his building which currently uses several hundred incandescent light bulbs. He was interested in upgrading the bulbs to LED bulbs. We found a few suitable replacements and did a payback analysis. While we determined that we would have been able to reduce the power load from 17.5kW to about 1.8 kW and save the owner nearly $5000 per year, the overall payback period was too long because of the high upfront cost of the LED bulbs and  the fact this was a seasonal business. In this case, we recommended against implementing an LED solution.  The customer has indicated that he would be eager to adopt this solution when the costs eventually come down.

Case Study #3
An LED lighting distributor provided us with some sample products that he had received from a couple of different manufacturers. We performed photometric, thermal and electrical tests on the products. Based on our test data, none of the products met the manufacturers’ published specifications. He was then able to make a decision not to carry these products on his line card because they didn’t meet his quality standards.

Case Study #4
A manufacturer of specialty lighting contracted us to evaluate one of their new products. We were able to determine a number of modifications that could be made to the product to enhance the performance and reduce the material cost. This included using more efficient LEDs and simplifying the driver circuitry. This, in turn, will allow them to reduce the amount of time spent assembling the product and provide additional cost savings.


 
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