There is a lot of movement in the greenhouse ignitor market at the second . Over the coming two calendar month , greenhouse veggie growers in Northwest Europe will certainly have to make decision . And also in floriculture growers are faced with choices . Do they desire to apply ( more ) artificial light ? And if so , with which fixtures above the crop ? With what spectrum ? With which installation ? And how to dispense with the Energy Department part ?
Looije Agro Technics supports growers as an independent consultancy bureau with these issues and , in a serial of four articles , examines these questions from different angles and strategy and more . Today , part 2 : choosing the good provider .
Always a new fixtureThough suppliers of HPS lighting are well-worn in the horticultural sector , new LED fixtures come out almost each week . producer keep on developing , new suppliers see an added time value in the horticultural market .
A HPS - regular is cooled passively . The circuit circuit board with electronic ballast needs to continue as nerveless as possible . The lamp has a sure turnout and , with the help of a reflector , cultivator endeavor to get the Christ Within there in the most effectual room potential , so it has added value to the crops .
The conception works relatively the same with light-emitting diode ignition . Reflectors have a less prominent function in LED lighting . It mainly come down to the type of LEDs in the fixity , the optics , and the place of the fixture that find out how the light distribution in the greenhouse influences the output results .
intercrossed lighting above a tomato crop
InterlightingOftentimes , with high wire ( vegetable ) cultivation , toplights ( HPS or LED ) are combined with interlights . We live that this combination of light is most efficiently used in the cultivation of tomatoes . According to us , this results in the sheer highest production pace . It remain to be seen if this is also the most responsible choice from an economic perspective , depend on the mixed bag used and the cultivation .
CoolingLED - fixture can be cool down passively , much like HPS - fixtures . The circuit board must be observe as coolheaded as possible to wield the light output and lifespan as long as potential . alternate cooling techniques would admit forced cooling or water cooling of the fixedness .
Given that LEDs need to be charged at a lower potential , a driver is part of the LED fixture . These driver can be attached to the fixture either internally or externally . Both options have their pro and cons . The of the essence deviation between the two options has to do with how they discharge the produced heat .
Casting shadowsThe choice of cooling and whether or not to build in a driver will charm the fixture ’s size . This is of minor importance during the kindling but contributes to the casting of shadows on the harvest during the hours when they are not used . Practical position have show that it is realistic to achieve more hours of dismount with LED fixture . The question of to what extend shadow play a part in this depends on the character of refinement and undertaking .
LensesIn the HPS - section , fixtures are cognize for the unlike types of reflectors ( flood lamp , downlights ) . The LED world has a similar affair going but with lens instead . Lenses have positive influence when it get along to the equal light statistical distribution , but are also a perturbation for the disbursal of the fixture output . Again , this is all depending on the cultivation and projection .
For the big name in the world of lighting , it is a given , newcomers know regular hinderance due to the extreme condition in the greenhouses . Fluctuations in temperature , humidness , and , even when hold on to a minimal , pesticide custom . This get to it challenging to produce repair for the horticultural industriousness .
Full - LED in strawberry refinement
The correct solutions to a problemBuying light-emitting diode fixture is , in part , buy poking . keep problems is always sound . Limited failure can always be prevented , but set up will always have to be done in part by humankind . However , it is crucial that in case of issues , a supplier takes responsibleness and finds the right solution quickly to keep the loss of product to a lower limit .
Looije Agro Technics wants to bridge the opening between theory and practice . " By means of our own cognition and experience in practice , the field and lab , we are able to translate the grower ’s lighting needs into untainted advice with a brand - independent view . Our ten factors are objectiveness and independence . "
For more entropy : Looije Agro Technics[email protected]www.lat.nl
