plant lighting(semjon reimer) - fh-muenster.de · 1. introduction 2. photosynthesis 3. lamps 3.1...

Plant Lighting

Semjon Reimer

Agenda1. Introduction2. Photosynthesis3. Lamps

3.1 Incandescent Light3.2 MH Lamps3.3 HPS Lamps3.4 Fluorescent Plant Grow Lamps3.5 Induction Plant/Grow Lamps3.6 Led

4. Applications4.1 Ebay examples4.2 Amazon examples

Incoherent Light SourcesSemjon Reimer

1.IntroductionGlobal radiation:Incoming solar radiation 340 W/m2

Reflected by clouds, atmosphereand surface 100 W/m2

Absorbed by surface 162 W/m2

Absorbed by atmosphere 78 W/m2

Mechanismen on earth caused by Global radiation: PhotosynthesisWater evaporationMelt snow and iceWarms the Earth


1.Introduction


1.Introduction

Human eye see only visible part of electromagnetic radiation (380-780 nm)Intensity of visible light is expressed in lux (lm/m2 = lux)Sensitivity of human eye is at 555 nm (green/yellow)Plant have two range of sensitivity: blue part 430-460 nm

red part 640-670 nm


Light sensitivity curveof the human eye

Light sensitivity curveof plants

Photosynthetic Photon Flux = PPFPhotons between 400‐700 nmThe higher the PPF value per Watt, the more efficient the light sourcefor plant growth.

2. Photosynthesis


6CO2 + 6H2O Light C6H12O6 + 6O2Carbon dioxide Water Sugar Oxygen

Chlorophyl a Chlorophyl bR1 = ‐CH=CH2 R1 = ‐CH=CH2R2 = ‐CH3 R2 = ‐COHR3 = ‐CH2‐CH3 R3 = ‐CH2‐CH3R4= C20H39OH (Phytol)

‐Chlorophyl a: 430 nm and 662 nm‐Chlorophyl b: 453 nm and 642 nm‐Ratio: 3:1‐Redshift with ß‐Carotine to 678 ‐ 680 nm

ß‐Carotine

2.PhotosynthesisLight reaction: Photolysis of a Hydrogen donor (energy take‐up)

H2O ½ O2 + 2 H+ + 2 e‐ (higher plants)H2S 2 S + 2 H+ + 2 e‐ (green sulfur bacteria)

ATP NADPH

Dark reaction: Synthesis of carbon hydrates (energy storage)CO2 + 2 H+ + 2 NADPH (CH2O)x + H2O + 2 NADP+


3.1 Incandescent LightFor lighting Indoor HouseplantsOld technologyHigh energy consumption


3.2 MH LampsMH = Metal HalideMH Lamps are gas discharge lamps

-only suitable for the starting andgrowing phase

-no transmition of red light-produce light in the blue spectrum


3.3 HPS LampHPS = High Pressure Sodium

• discharge takes place under pressure in an atmosphere of sodium mercury vapour


3.3 HPS Lamps


Sodium vapor lampNDL Low pressure lamp (light color spectrum)NDL high pressure lamp

Power: 1000 W 600 W 250 WBrand: Sunmaster Sunmaster PhilipsColor temperature:5500 K 6500 K 4500 KFlux: 80000 lm 50000 lm 20500 lmSocket: E40 E40 E40Price: 100 € 55 € 35 €

3.4 Fluorescent Plant Grow LampsMercury discharge lampsWorking with phosphors

blue phosphorBlue 440 to 460 nmBaMgAl10O17:Eu red phosphorRed 590 to 630 nm Y2O3:Eu (YOX)GdMgB5O10:Ce,Tb,Mn YVO4:Eu (YVE)


3.5 Induction Plant/Grow Lamps-Induction lamps are comparable to fluorescent tubes-Thear lifetime could reach about 100000 burning hours-working without electrodes-fire the gas in the tube with magnetic field-they need fluorescent material to produce light ofrequired light emission


3.6 LED

-With LED-Technology plant growing is energy efficient- life of LED is very high (about 50.000 h)-Different kind of wavelength are possible (660 nm, 440 nm, 470 nm, 380 nm, 610 nm)


Opening angle: 170°Voltage: 3,2 VCurrent: 350 mA/ 1.000 mAOutput: 4 W

Golden Dragon Plus LED Oslon SSL LED

Opening angle: 80°Voltage: 3,2 VCurrent: 350 mA/ 1.000 mAOutput: 3,7W

4. Applications


4. ApplicationsGrowing of gras soccer field


4.1 Ebay Examples


Power: 500 LumenPower consumption : 14 WattPrice: 26€

Power: 600 LumenPower consumption : 15 WattPrice : 40€

Power:?Power consumption: 9 WattPrice : 17€



4.2 Amazon Examples


Power consumption : 200 WattPrice: 100€

HPS Lamp GrowsetPower consumption : 400 WattPrice: 80€

Hydrofarm LY8U250CPPower consumption : 250WattPrice: 25€

HPS GrowlampPower consumption : 400WattPrice : 70€

Sources• http://www.osram.de• http://www.eoearth.org• http://www.electronicproducts.com• http://zeiss‐campus.magnet.fsu.edu• http://www.eyehortilux.com• http://www.hidhut.com• http://www.nbsls.com/• http://progressivegardening.com• http://www.mountainvalleygrowers.com• http://www.sglconcept.com• http://www.econoluxindustries.com• http://www.sslight.de/blog/1652.html

• Booklet Philips: Philips LED Lighting in horticulture

• Homepage: Prof. Dr. rer. nat. Thomas Jüstel

Inkohärente Lichtquellen (Incoherent Light Sources)

plant lighting(semjon reimer) - fh-muenster.de · 1. introduction 2. photosynthesis 3. lamps 3.1...

Documents