High Pressure Mercury Lamps Alternatives

Right on the money, mostly. Depending on how much use there is every day, different alternates may be used. If you are running a 2 shift operation, probably the new T5 flourescents (just have to watch your ceiling height). Only using the lights 1 shift, HID is still the most efficient - you can go with HPS or metal halide, if you want a better color spectrum - both give about the same lamp life. If you are concerned about power failure and time for the lites to come back on, do as I am doing, install a few LED's in strategic places and just let them run full time. Power draw is so low and LED life so long, you will likely never have to do any maintenance on them. As for outdoor, I installed LED with photocells.

There are incentives in Ontario, Canada as well for changing out, a program I am taking advantage of to recoup some of my costs(which were a lot less than I expected).

best alternative, draw the curtains back and let the sun in!

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I refuse to answer anonomous posters with ANY civility.

You can't be bothered signing up, I can't be bothered as well.

Rant off... unsubscribe.

I tend to agree with Yousef1. If you really want an answer, Identify yourself!

Aside from that, if you consider energy use, replacement costs, maintenance, projected life, etc. for the long term (10-30 years), LEDs are getting quite economical.

Dear Mr.dkwarner,

While appreciating your views on LED, very recently I studied a news that people exopsed to LED lighting will get some health problem.

But I think this can be over come since ever increasing R & D Work by the LED light Manufacturers will come out with a proper solution for the health problem.

DHAYANANDHAN.S

Can you be more detailed? I suspect that direct (no phosphor) LED lighting might be bad due to the imperceptible flickering, but most white LEDs use phosphors, which should fill in the gaps.

We have installed a large quantity of various types of LED lighting at multiple sites and are suffering a significant quantity of failures.

I would suggest that you look at Induction lighting solutions as they have drastically improved and you can get a 10 year/100,000 hour warranty which means the maintenance costs will be very low. (WDI & Neptune are two of the companies that offer this high quality type of lighting.)

The LM output of a 400 watt HO induction fixture is very close to that of a 1000W MV and/or MH fixture while the power consumption is around 50%.

HPS lighting should not be used inside buildings as it causes restricted visibility and can cause accidents.

Our solution for changing HPML is High pressure sodium lamp from Philip's because they use same ballast and installation with good performance and smaller power consumption .

For example SON-H pro 110W is good alternative for HPMV lamp 125W .

Good luck

I looked at Philip's website and the SON series. I saw no mention of color. I suspect that is because they are yellow, like all the other sodium lamps I've seen.

As someone else pointed out, that yellow light can make some things virtually invisible, which can actually be dangerous.

Although they do have somewhat improved energy efficiency, from what I see, they can't begin to match LEDs or Induction lighting.

The cost of the fixtures may sound high, but the cost of energy makes them pay for themselves in only a few years.