plant lighting(semjon reimer) - fh-muenster.de · 1. introduction 2. photosynthesis 3. lamps 3.1...
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Plant Lighting
Semjon Reimer
![Page 2: Plant Lighting(Semjon Reimer) - fh-muenster.de · 1. Introduction 2. Photosynthesis 3. Lamps 3.1 Incandescent Light 3.2 MH Lamps 3.3 HPS Lamps 3.4 Fluorescent Plant Grow Lamps 3.5](https://reader034.vdocuments.us/reader034/viewer/2022052019/6033314b640bbe59fa33f547/html5/thumbnails/2.jpg)
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
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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
Incoherent Light SourcesSemjon Reimer
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1.Introduction
Incoherent Light SourcesSemjon Reimer
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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
Incoherent Light SourcesSemjon Reimer
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.
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2. Photosynthesis
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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
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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+
Incoherent Light SourcesSemjon Reimer
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3.1 Incandescent LightFor lighting Indoor HouseplantsOld technologyHigh energy consumption
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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
Incoherent Light SourcesSemjon Reimer
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3.3 HPS LampHPS = High Pressure Sodium
• discharge takes place under pressure in an atmosphere of sodium mercury vapour
Incoherent Light SourcesSemjon Reimer
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3.3 HPS Lamps
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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 €
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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)
Incoherent Light SourcesSemjon Reimer
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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
Incoherent Light SourcesSemjon Reimer
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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)
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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
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4. Applications
Incoherent Light SourcesSemjon Reimer
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4. ApplicationsGrowing of gras soccer field
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4.1 Ebay Examples
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Power: 500 LumenPower consumption : 14 WattPrice: 26€
Power: 600 LumenPower consumption : 15 WattPrice : 40€
Power:?Power consumption: 9 WattPrice : 17€
Power: 3650 LumenPower consumption : 90 WattPrice : 95€
Power: 4800 LumenPower consumption : 120 WattPrice : 160€
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4.2 Amazon Examples
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Power consumption : 200 WattPrice: 100€
HPS Lamp GrowsetPower consumption : 400 WattPrice: 80€
Hydrofarm LY8U250CPPower consumption : 250WattPrice: 25€
HPS GrowlampPower consumption : 400WattPrice : 70€
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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)