Tue, 19 Dec 2023 04:46:27 +0000 http://www.greenbuildingforum.co.uk/newforum/ Lussumo Vanilla 1.0.3 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16108&Focus=273490#Comment_273490 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16108&Focus=273490#Comment_273490 Fri, 26 Apr 2019 18:46:16 +0100 bogal2 Can anyone shed any light!]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16108&Focus=273494#Comment_273494 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16108&Focus=273494#Comment_273494 Fri, 26 Apr 2019 20:01:30 +0100 djh http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16108&Focus=273503#Comment_273503 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16108&Focus=273503#Comment_273503 Sat, 27 Apr 2019 12:33:20 +0100 owlman I guess it was inevitable as LEDs, with their longer life, hit manufacturer's profits so they had to find a way of "adding value" to their products.
Off topic but;
Convenience, and versatility aside, I'm unsure generally of how much positive impact domestic LED lamps have had on energy saving in industrialised societies, which is how they were originally sold.
Their proliferation into hitherto non-illuminated areas of living, e.g. kitchen plinth lighting, shelf lighting, outdoor garden lighting generally, indoor and outdoor "art" lighting etc., with all the extra manufacturing energy use it generates, probably more than outweighs the direct energy saving. Plus the knock on effect in individual thinking e.g. " Oh leave it on, it uses so little power anyway " is surely detrimental.
One side effect that this, all night illumination, has had on wildlife for instance has only just begun to be recognised.]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16108&Focus=273504#Comment_273504 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16108&Focus=273504#Comment_273504 Sat, 27 Apr 2019 12:53:29 +0100 tony
You are right about too many lights on too often but even so savings are being made just not as bigger ones as there should have been.

Notice that I have said electricity savings.]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16108&Focus=273509#Comment_273509 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16108&Focus=273509#Comment_273509 Sat, 27 Apr 2019 15:52:56 +0100 alexc
Not directly addressing your situation, I have spent that last 12 years watching the Led strip/lighting market. Installed a couple of Led strip based lighting networks.
The LED's that are about now lumens/m are twice as good as 3 years ago. 10 years ago i switched halogen GU 9 for led GU 9, the cost savings were visible on the electricity bills. I recollect that the new GU 9's paid for themselves in 6 months i think. That was about 4 quid per GU 9, 9/10 years ago. I never found many really good guides on led lighting, lumens https://en.wikipedia.org/wiki/Lumen_(unit), the data is out of date. I bought all leds i use from https://www.lumitronix.com/en_gb/. There product detail sheets are good. I sourced aluminium strips more locally. The rest of it basic electrics you'd learn at school, plus the checking out what MeanWell (probably the most respected supplier of led transformer/driver) can supply. Then balancing.

the disadvantage of led strips/commercial units,
- As noted, the recycling and disposal, they are harder to dispose of.
- Switching strips: Led strips are getting better, so where I used 50cm strip 4 years ago, a 20 cm strip is now same (given price the same, power requirement, and no cooling set up required). So if after 5 years the strip fails and you replace, you'll not be in the market for the most price competitive led strips. I can get 50cm strip with the same lumens output as 5 years ago however:
- The power draw would have dropped, meaning I would have to replace the AC/DC transformer (driver)
- yes you can get the sometimes the original strips for a long time, for direct replacement. But they cost more

Of lesser import, What is the power supply that is being used, 12, 24 or 36V is it direct current or direct voltage. Those are the 3 main standards, I believe 36V(Zhaga) is being favoured more and more. I have used 24V until this year. I wanted to illuminate the garage workshop really well, and discovered that what I can get using 36V was cheaper.

My solution: I made my own lighting fixtures, I made the driver easy to access. I ran 1-5 lights off one driver. I have the feeling the designer architect in your build missed designing in where the fixtures should go. There is frequently no need for luminaires, eg on stairs, halls. In key places I installed luminaires where high powered lighting was required. This is not work of a sparky, just something they need to agree to work with. I live in the Netherlands now, they have developed new standards to address installing DC networks around buildings to address what is happening.
I have had to leave some random and strange access points to drivers. So be it.

If you are seeing that that the sparky has installed on Mains stuff with lower lumens/m that available in say IKEA or Toolstation, then the sparky is not on the ball/ probably playing safe. Also, i get the feeling the they were told we want lights here, here, here and here. Leaving them with little room to maneuver. I am betting too that there are regulations in a vet practice re lighting, so they'd have to stick to them.
For what its worth, in the garage i have attempted IP60/IP61 in the garage. Mainly to assess how complicated sealing joins to fixture on lighting runs would be. I do a lot of wood work, dust gets everywhere.

Ps, I would expect designed in system to be less cost than old style(you have carpenter and sparky costs). luminaires, I suspect are same pricing with Much better energy consumption, and more light.]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16108&Focus=273613#Comment_273613 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16108&Focus=273613#Comment_273613 Mon, 06 May 2019 03:20:18 +0100 wookey
Which are very cheap but rather nice, quality units. They actually just have some strip LED inside (on edge around side of disc or square, shining into the diffuser), which is easy enough to replace if it died. They can be current or voltage driven. Not quite as efficient as my DIY units (strips are never as good as direct current-drive LEDs), but pretty good.]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16108&Focus=273618#Comment_273618 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16108&Focus=273618#Comment_273618 Mon, 06 May 2019 10:44:42 +0100 borpin
I find at least one of a batch will often fail quite quickly so I make a point of always buying spares if it is not just a one off.]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16108&Focus=273653#Comment_273653 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16108&Focus=273653#Comment_273653 Tue, 07 May 2019 22:53:03 +0100 Artiglio