Induction Lighting Or LED

[mortoch]

I am looking for opinions and experiences with induction lighting versus LED in an industrial setting. All the tables and charts I have found place Induction as the preferable system. Do they meet the hype of longevity and lumens maintenance? etc. Any and all advise will be greatly appreciated.

 

[shamsdebout]

I am just going off memory here but I think the Induction lamp has the longer lamp life. I don't think the lumen maintenance is as ideal as LED. I would think though that it would be preferable in an industrial application.

 

[mortoch]

Thank you for the input. My problem with LED's is that our process generates large amounts of heat and even LED salesmen, (the honest ones) tell me that they are not ready for our application. Now my problem with the induction is I can not get the powers that be to see past the initial cost of the fixture to the long term benefits. I have drug out every study, stat, table and comparison I can lay my hands on and I am still going to put up HPS because they are cheaper initially. It is a very sore subject today.
But again thank you.

 

[EEJaime]

Mortoch,

All we can do as engineers is to present the facts to the client and allow him to make the decisions. If you've presented a complete picture which includes first costs, maintenance and life cycle costs, energy costs and so forth, and the client still makes a decision based solely on first cost, he deserves what he gets. Document it, design it, and move on.

We can't protect people from themselves.

EEJaime

 

[mortoch]

Thanks for the help guys, I finally won the argument with a little help from the HPS lighting supplier. I had given up the induction because of the reasons already given and called the HPS guy for a nameplate amperage for the fixture he was quoting in order to finish the design specs on the system. For a 400w HPS he quoted 4.6 amps. Which if you do the math means we were going to be putting 1000w of power through a fixture and getting 400w illumination that would fall off by 30% after about 6 months. Plug that data into a payback calculator and see how it effects your payback.
Mortoch

 

[ScottyUK]

Careful when equating 4.6A to 1000W: more likely it is 1000VA, and likely at a dreadful power factor. Also 400W of optical power output is inconceivable from an HPS lamp - that is an input power. I'm sure most of that is obvious, but if you are putting stuff on paper to the client you wanna be right.


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If we learn from our mistakes I'm getting a great education!

 

[mortoch]

I should have said 1000w's worth of power.

 

[waross]

You should have said 1000VA of apparent power. The real power will be much less.

Bill
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"Why not the best?"
Jimmy Carter