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 Post subject: Re: Induction lamps
PostPosted: Wed Apr 18, 2012 4:03 am 
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I summarized some advantages of induction lamps compared with conventional LED lamps as your requirements.

Induction lamps have a lifespan of 80,000 to 100,000 hours (depending on type and model), which is essentially almost the same as LED lamp lifespan. However, the lumen degradation will be around 14% for LED lamp after 1200 hours use because of the problem of heat dissipation. The lumen degradation of induction lamp is only 16% after 20000 hours use. Another thing is about luminous efficiency. For LED, the system luminous efficiency is around 65LM/W, while for induction lamp, it is over 75LM/W, especially for 400W induction lamp, it will be 80LM/W. The major difference between the technologies is in conversion efficiency (energy utilization) and costs.

Most presently available commercial LED lighting fixtures have conversion efficiencies in the 35 to 55 Lumens/Watt (L/W) range. LED elements with a conversion efficiency of 70 L/W are available, but still quite expensive. There are reports of LEDs with conversion efficiencies of up to 100 L/W operating in research labs, but they are not yet commercially available.

Induction lamps have a conversion efficiency ranging from 65 L/W in low wattage (8 ~ 20 W internal inductor types) to 85 L/W in the high wattage (250 ~ 400 W external inductor models) range. Ongoing research will see some small improvements in these numbers. When considering commercial/industrial lighting and using a 200 W fixture as an example, the induction lamp version will produce 17,000 Lumens while an LED version would only produce 11,000 Lumens (about 35% less light) with the same energy input.

Additionally, the higher operating frequency of induction lamp makes the light stable and no flickering.
Above are just a few obvious advantages of induction lamps compared with LED ones. If you want to know more about induction lamps, I will be very glad to help.

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 Post subject: Re: Induction lamps
PostPosted: Thu Apr 19, 2012 7:29 pm 
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Thank you for this post, that's definitely cleared up why Ceredigion are installing Induction lamps!

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 Post subject: Re: Induction lamps
PostPosted: Thu Apr 19, 2012 9:25 pm 
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An excellent post, and finally sheds some light on a lamp type that was still a bit of a mystery.

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 Post subject: Re: Induction lamps
PostPosted: Fri Apr 20, 2012 4:01 pm 
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Add to the reference section here.


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 Post subject: Re: Induction lamps
PostPosted: Sat Jun 01, 2013 12:09 am 
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A rather interesting product from INDO lighting, a Beta 5 retrofit gear tray and lamp containing an Induction lamp
http://indolighting.com/product/thorn-b ... -retrofit/

... White light, 1980s top entry Beta 5s - just imagine it! :mrgreen:

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 Post subject: Re: Induction lamps
PostPosted: Sat Jun 01, 2013 5:56 pm 
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Interesting retrofit product. They state "Direct replacement for 35W PL" - surely this is quite limited as I don't know of any Beta Fives of that type!  :?


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 Post subject: Re: Induction lamps
PostPosted: Sat Jun 01, 2013 11:34 pm 
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I assume it's a mis-print!

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 Post subject: Re: Induction lamps
PostPosted: Fri Apr 11, 2014 12:38 am 
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sotonsteve wrote:
Indust wrote:

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Sorry for going off topic, but can anyone tell me what lamp type that is?


That is a 55w Philips QL Induction lamp.


That looks quite nice in a weird sense, shame these bulbs weren't around in the MV days as a form of replacement.  MV lanterns such as the GEC 5590 etc. were part of the quirkiness of Britain.


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 Post subject: Re: Induction lamps
PostPosted: Fri Apr 11, 2014 9:26 pm 
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Alex wrote:
Interesting retrofit product. They state "Direct replacement for 35W PL" - surely this is quite limited as I don't know of any Beta Fives of that type!  :?


Well, interestingly there are a number of Beta 5s in Houghton Regis near Luton which have induction retrofits.


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 Post subject: Re: Induction lamps
PostPosted: Sat Jun 21, 2014 10:17 am 
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As mentioned by Sotonsteve, image of a Beta 5 retrofitted with the Indo Lighting induction lamp retrofit. A side effect has been the increased UV light emitted emitted from the new lamps has started to turn the bowls milky.

The Indo website no longer appears to list the Beta 5 retrofit - perhaps LED and CFL have now stolen this market?

Elsewhere in Bedfordshire, columns that did have MA50s on them now also sport new induction lanterns, and close up.


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