OliNo

Renewable Energy

Lighting for the body, not just for the eyes

Posted by Marcel van der Steen in Explanation No Comments »

sunHealthTo ensure that light is functional in the internal work space, we use for instance the norm EN 12464-1. It describes for different work situations the minimum average illumination values, the evenness, CRI ,UGR and sometimes the color temperature. But light does more. It can have a very positive effect on human’s well being. Norms 67600 and 5031 tell how.
OliNo implemented the measurement of melanopical effectiveness according to these norms.
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33 Indicators That Bitcoin Growth Isn’t Slowing Down in 2016 (Infographic)

Posted by Jeroen van Agt in Economics No Comments »

BitcoinBitcoin keeps growing strong. More and more companies are investing in / accepting bitcoin. Although Bitcoin has been declared dead by opponents multiple of times. Closing in on 2016 and bitcoin is alive and well. In fact it’s doing better than ever and the infographic below demonstrates that the only way is up, in terms of value and usage.
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Electric Motorcycle – STORM Pulse

Posted by Jeroen van Agt in Transport 1 Comment »

storm-pulseThe STORM pulse is a prototype electric motorcycle. We interviewed Yuri Steinbuch of STORM Eindhoven about the STORM Pulse during the electric mobility tradeshow (Ecomobiel) in the Netherlands. Yuri talks about the unique battery pack of the motorcycle and the planned tour of 80 days around the world.
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Spectrum of moon light

Posted by Marcel van der Steen in Explanation 11 Comments »

005_moonWhen I was looking for a spectrum of moonlight, I could not find it on the internet. As I do a lot of lamp measurements myself (see the category lamp measurements), I decided to measure the moon spectrum myself and put that info available on the internet.
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Endurance LED bulb and relation to warmup measurement

Posted by Marcel van der Steen in Explanation No Comments »

hourglass-couplesAt OliNo we do a warm-up measurement on the lamps we test. During this warm-up until stabilization, a lot of the LED lamps show a decrease in consumed power and as well in light output. When the drop in light output is significantly bigger than the drop in consumed, this could be an indication of a not too long lifetime.

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Generation kWh by citizens

Posted by Gijsbert Huijink in Self Sustaining 2 Comments »

 SOM ENERGIA SpainIt all started with 157 people, founders of Som Energia, in December 2010 with the aim to jointly produce and consume their own renewable energy. In January 2011 work started to obtain all necessary permits for selling electricity started and by October  the service was launched, initially for just a few hundred clients.

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Color Quality Scale (CQS): Measuring the color quality of light sources

Posted by Marcel van der Steen in Explanation 10 Comments »

CIELabThe Color Rendering Index (CRI) is a quantitative measure of the ability of a light source to reveal the colors of various objects faithfully in comparison with an ideal or natural light source. The CRI is originally designed to evaluate fluorescent lamps. The CRI was intended to measure the ‘naturalness’ of objects’ colors, not preference. It has been found that the CRI is not reliable when used for LED lamps.

A successor, the Color Quality Scale (CQS), has implemented a number of improvements making it an alternative to the CRI and a better method for determining the color quality.
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Difference Qlumedit and LDTeditor

Posted by Marcel van der Steen in Explanation No Comments »

QlumeditVsLDTeditorWith every lamp measurement comes an eulumdat file. This is a photometric file enabling you to simulate light distribution and light patterns in a certain area like an office, or on streets etc.

It appears that two programs, Qlumedit, and LDTeditor, do read in differently an equal eulumdat file when symmetry is present along the C90 C270 axis.

Personally, I do not understand the way LDT editor does it.

Update 3 March 2015: One more catch with DIalux and IES file. Dialux does not well understand dimensions used in IES files.

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LumitexT – Endurance test 4x strip LumiBOX-XT(NV) 350mm 3-LED

Posted by Marcel van der Steen in Endurance Test No Comments »

LumitexT has put 4 LED-strips in endurance test.

This article presents the endurance test results. The test has run more than 6,000 hours. Then the test went on until 8,400 hours. The graphs have been updated.

See also the results of the 0-hours test.

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Lampreparatur im Studentenwohnheim

Posted by Marcel van der Steen in Energy saving, Explanation, Lamps No Comments »

20140811_075402_artikelDieser Artikel zeigt warum eine Leuchtstoffröhre nicht mehr funktionierte und die Erfahrung deren Reparatur. Diese Aktion hat die Folge, dass man jetzt die alte Leuchte niet wegsmeißen muss sondern weiter verwenden kann, aber auf Grund des Alters der Leuchte war es nicht so einfach sie sicher zu reparieren.

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