Policy     Economics     Technologies

Evaluation of the Longlite QL3

Oxxio, working in collaboration with Longlite, has plans to launch an attachment for a light bulb which it holds can cut the energy consumption of the bulb without reducing the illumination provided, at the same time achieving a substantial increase in bulb lifetime. As traditional light bulbs still account for a major share of the market and users consciously opt for this type of light source for certain applications, the new product could have significant benefits. In part-cooperation with Eindhoven Technological University’s Light Laboratory, CE Delft has evaluated these claims and the associated environmental gains. The main conclusion is that the so-called QL3 attachment does indeed cut energy consumption, by 12.2% on average. There is a decrease in illumination, though, such that the total lighting efficiency, expressed in lumen per watt, also declines. Although the claim that the QL3 extends bulb lifetime was not tested experimentally, a study of the documentation provided makes this very plausible.


Benno Schepers

Delft, December 2006

Evaluation of the Longlite QL3

Tweets by @cedelft

Article - Evaluating the environmental impact of debit card payments https://t.co/IfnNwC3p0b
07-12-2017 16:23

Rapport Net voor de Toekomst - scenario's voor investeringskeuzes van netbeheerders in infrastructuren https://t.co/W4mUsLCuZ0
07-12-2017 16:04

Gezamenlijke visie om Omgevingswet, regionale energiestrategie en warmtetransitieplan lokaal gelijk te gebruiken… https://t.co/YwHhzl338d
06-12-2017 16:30

Position paper @CEDelft t.b.v. hoorzitting/rondetafelgesprek Kunststofketen en zwerfafval Tweede Kamer d.d. 30 nove… https://t.co/fLEooSyZL6
30-11-2017 12:32

CE Mailvision - New projects @cedelft, Promising CCU in EU, Tool for aviation charges, Grid for the Future, Biofuel… https://t.co/Mq2XtExZMT
30-11-2017 11:57