solar control glass
TRANSCRIPT
SOLAR
CONTROL
GLASS
Francesco Tritta
Guardian Luxguard I
History** Beginning 1960 Float glass
** During the 1960’s Body tinted glass
** Beginning of 1970 Pyrolitic coated glass
** End of 1970 ‘s Vacuum coated glass
** Beginning of the 1980’s Magnetron coating produced in Luxguard
** 1984 Low-e coating produced in Luxguard I
** End of the 1980’s Hifh performance coating produced in Luxguard I
** 2003 Biggest magnetron coater worldwide operating in Luxguard I
Properties of Glass Light
Light reflection
Light transmission
Properties of Glass Energy
Body tinted glass
Production Like float glass by changing raw materials
Colours Green, Blue, Bronze, Grey, Pink………
Use Automotiv / Decoration / Architectural
Properties
Light transmission :
90 % for clear
72 % for green
Solar factor :
85 % for clear
57 % for green
Solar absorption :
11 % for clear
52 % for green
Pyrolitic coated glassProcess
Spray process
600 °C
Producers Glaverbel Stopsol
VeglaAntelio
Pyrolitic coated glassProperties
Hard coating
One coating composed of metal oxide.
Not neutral
Limited performance
1 2 3 4
Position of coatingMost part of the time on position 1 coating exposed to external 1 = Outsideconditions 4 = Inside
Vacuum ProcessDiode Process
Gas
Cathode with target withoutpermanent magnet
Vacuum pump system
Metal atom
No permanent magnetNo homogeneous diffusing
Vacuum ProcessMagnetron Process
Argon
Cathode
Permanent magnet
Magnetic fields
Vacuum pumpsystem
Anode
Vacuum Process
Magnetron Process
Principle
The glass surface is coated by sputtering in vacuum where the targetmaterial on the cathode is diffused.
Diffusing is through positive loaded Argon ions.
Argon ions are produced in the plasma through the gas discharge.
Permanent magnets maintain the necessary density of the plasma.
Vacuum ProcessMagnetron Process
Cathode with target
Vacuum pumpsystem
Gas
Anode
Argon ion Metal particle Argon atom Argon electron Electron
Vacuum ProcessMagnetron Process
Magnetron solar control coatings
* Hard coating
• Coating applied on :• Clear float glass • Tempered or heat strengthened glass
* Possible to apply the coating in laminated glass against the PVB layer
Metal oxideMetal
Metal oxideMetalMetal oxide
Metal oxideMetalMetal oxide
Metal oxideMetalMetal oxide
Metal oxideMetalMetal oxide
Silver Pewter Bronze Blue Green CS CP CB CR CM
Magnetron solar control coatings
Vision
In the unit coating always in position #2.
Can be used in all traditional curtain wall systems , as well for structuralglazing systems, without stripping off the coating.
To improve the U-value in an unit with C-coating , a Low-e layer is necessary on surface #3.
Can be used as vertical and inclinated position.
1 2 3 4
Magnetron Low-e coating
Use Mainly in residential areas
In the unit coating always in position #2 or #3
Properties Thermal insulationReflexion of IR back inside
I.G. Unit clear I.G. Unit with Low-e coating
1 2 3 4
Magnetron Low-e coatingFunction of the different layers
Layer "1" : Metal oxideAdhesion of the next coming layerReduction of the light reflex ionGuarantee high light transmissionNeutral color
Layer "2" : SilverFunction layer (reflexion of the infrared radiation)Because of the pure silver the emissivity of the glass is decreased to lower than E=0,10 . This meansimprovement of the U-value. Non coated float glass has an emissivity of E=0,89.
Layer "3" : MetalProtection of the silver layer.
Layer "4" : Metal oxideReduction of the light reflexionProtection layer
Glass
12
34
High Performance Coating
PerformancesHigh light transmission
Low solar factor or shading coefficient
Low U-value
PropertiesCoating on surface #2 in the i.g. unit.
Neutral or colored.
1 2 3 4
High Performance Coating Coating Composition
Metal oxideMetalSilverMetal oxide
Blue 59 Silver 43 Natural 62 Neutral Plus 54 Silver 50 Neutral 52 Superneutral 63
Metal oxideMetalSilverMetal oxideMetalSilverMetal oxide