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LeuchTek GmbHHamburg, Germanywww.LeuchTek.de

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Benefits of supplemental lighting Higher yield, more vigorous leading to a lower risk of

disease and aiding the process of biological control Full year-round production is possible Fruit tends to be more consistent in terms of quality and

taste. Less disease and fungi problemsEnergy is used more

effectively and overall use/kg of product will be lower. Increase CO2 and irrigation cycles Stronger and quicker root development

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More light, more growth

Max

115000lux (1400micromol/m2.s)

Light Level

The general lighting saturation level can be as high as 115000lux, which from a practical point of view, cannot be achieved. Thus normally always more light, more growth.

But more lighting increases the cost

Reasonable payback would appear to be possible for an installation producing 6,000 to 15,000 lux.

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Typical Applications

Propagation.Seeding, Plant raising, Eggplant,(Aubergine), Cucumber, Sweet pepper,Tomato

Bedding Plants. Ageratum, Antirrhinum,snapdragon, Begonia, Dianthus,carnation, Gazania, Impatiens, Pelargonium, geranium, Petunia

Potted Plants. Kalanchoe,Chrysanthemum, orchids

Cut Flowers. Alstromeria,Roses,Gerbera

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Influece of supplemental lighting

Following slides show some research/practical results in terms of supplemental lighting in greenhouse. Most of

them are extracted from academic papers.

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Tomato

Tomatoes cultivated in the Netherlands, lit with 10,000 lux can produce 92 kg/m2 annually, and with 15,000 lux it is possible to produce 104 kg/m2.

When production is unlit the harvest Is about 59kg/m2.

-- Harry Stijger

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Rose With supplementary lighting the production was 24% higher than the

control.. the development of axillary buds was promoted, the number of flowers with inferior quality was less. There was no

influence of supplementary lighting on the total number of flowers. C.

Vonk Noordegraaf, SUPPLEMENTARY LIGHTING AT THE ROSE CV 'SONIA'

An increase in the lighting period (LP) enhanced the number of

flowering shoots by 12% and fresh weight per shoot by 5%. MORTENSEN L. M. „Influence of air humidity and lighting period on growth, vase life and water relations of 14 rose cultivars“

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Scaevola

Influence of CO2 + HPS lighting combo         

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Additional practical Information

18 to 20 hour/day ( day length + supplemental ) lighting time can be very helpful

For a rough calculation, each 10m2 /600W can reach 6000lux. (Distance 2-3m)

Each 1000lux lighting can increase the temperature of greenhouse 0.7degree

1 Micromol (umol)=7.62 FC(foot candle)=81.9lux

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Lamp and application

Kelvin Color Temperature

Incandescent lamp has low efficiency, high temperature, short bulb life time

Fluorescent lamp has good efficiency, suitable for seeding, leaf lettuce, spinach

HPS lamp has very high efficiency, used in less color critical applications such as parking lots, street lights and horticultural lighting.

The orange/red spectrum helps to produce larger harvests of higher quality fruits or flowers.

MH lamp has high efficiency, close nature sunlight thus suitable for stadium, malls. Crops has nature look but not high yield.

Note: High Pressure Sodium (HPS) lamp and Metal Halide (MH) lamp all belong to High Intensity Discharge (HID) lamps. It needs a driver, i.e. ballast.

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Magnetic vs. Electronic ballast

Type 

Magnetic Ballast Electronic Ballast

Power 400W 600W 400W 600W

Operating Current (A) 7.5 9 2.3 2.95

Total Power Consumed (VA)

10121364 420 623

PF 0.43 0.47 0.99 0.99

Waste Power Saved   56% 58%

Bulb Lifetime  1

1 2 2

Energy-saving up 58%

Prolong Bulb life time

We focus on the electronic ballast only!

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LeuchTek GmbH LeuchTek GmbH

& Products& Products

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LeuchTek, your partner in greenhouse lighting

LeuchTek is a dynamic player in agricultural supplemental lighting

Especially LeuchTek offers HPS electronic ballast

Located in Hamburg, service for European market

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Products for Greenhouse

PLG602,402 series (600w, 400w) PLG601,401 series (600w, 400w)

PLG603,403 series (600w, 400w)

PLG1200,800 series (1200w, 800w)

Available 230V 50Hz / 120V 60Hz

PLG2-3 reflector

PLG2-4 reflector

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Our Strength

Convenient and robust connection box

The only product which is certified by TUV-GS, UL, FCC

RoHS compliance tested and passed

Second prize winner of Hortifair 2003

4 international patents

Best quality/price rate; state-of-art design

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If you need quotations or rough designs, please contact us

LeuchTek GmbHHans-Henny-Jahnn-Weg 1722085 Hamburg, GermanyTel: +49 40 23495747Email: info@LeuchTek.com