Archive for December, 2008

22nd December
2008
written by admin

Today I read white paper from Philips about performance of street lights. The light sources are LED, High Pressure SodiumĀ and Mercury Vapor. The datasheet is as follow:

I am not sure when they test these. It may be Auguest, 2008. From the above data, we can find the following results. (more…)

16th December
2008
written by admin

Grow lights are an electric lamp which designed to promote plant growth. They emit an electromagnetic spectrum appropriate for photosynthesis. Sorted by light sources, we can find Incandescent, Fluorescent, Metal-Halide (MH) HID, High-pressure sodium lamps and LED grow lights in the market.
Because of LED technology progress recently, LED grow lights are attractive to indoor and outdoor growers since they do not consume as much power, do not require ballasts and produce a fraction of the heat of HID lamps.
If you are looking for grow lights, you may take LED grow lights into consideration because of the following features. (more…)

7th December
2008
written by admin

Revenue Down Time

For some companies, it’s not only about the cost of changing lamps. What happens when revenue-generating machinery has to be shut down in order to replace the lamps above them? A large carpet manufacturer states that to change a lamp over one of their looms, they have to shut down the revenue-generating loom. When the electrical maintenance crew is doing that, they are not fixing broken looms, so lighting maintenance is not only a cost impact, but it reduces capacity utilization and revenue. In addition to the convention center and heavy manufacturing examples discussed above, there are several other commercial and industrial segments that face potentially high lighting maintenance costs.

Offshore drilling platforms (more…)