Testing The Netherlands for commercial use in flowers/plants of LED is showing: http://www.zibb.nl/tuinbouw/artimg/a20061022203819.PDF (en dutch) (study by Wageningen "ordered " by Philips will continue till may 2009)
some details energie saving none: green power 600w/400v 1.9 mircomol/watt (normal standard hps lamp), green vision 1000 w 1.82 micromol / watt. Investment/instalation costs 8 tot 10 times more than current instalations. Break even point on costs between current and LED instalation wil be between 2010 (most optimistic senario) and 2020. Regards Martin First Rays wrote: > LED's do offer an advantage of light without much heat, which in large > applications would be a boon, as many plants can take higher light > levels if they are kept cooler. Additionally, as LEDs emit in specific > wavelengths, I suppose it is possible to provide an array that optimizes > the overall spectrum. The relative energy-efficiency of LEDs is also > well established. > > As the relative value of those first two advantages is in the > "marginal-to-OK" range compared to other lighting sources, in my > opinion, the cost is going to have to come WAAAY down before any of the > benefits become worthwhile for the typical grower. > > Ray Barkalow - First Rays Orchids - www.firstrays.com > <http://www.firstrays.com> > > > ------------------------------------------------------------------------ > > _______________________________________________ > the OrchidGuide Digest (OGD) > [email protected] > http://orchidguide.com/mailman/listinfo/orchids_orchidguide.com _______________________________________________ the OrchidGuide Digest (OGD) [email protected] http://orchidguide.com/mailman/listinfo/orchids_orchidguide.com
