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ABSORPTION TECHNICAL INFORMATON

Production Process

Absorptive surfaces consist of a copper strip or an aluminum strip that has been anodized on both sides. For mirotherm®, sunselect®, and mirosol® surfaces, three layers are then applied in a unique, continuous air-to-air PVD process: an infrared reflecting layer to ensure low thermal emission, and metal oxide absorption and anti-reflection layers to ensure the highest solar absorption while providing resistance to outside agents. For mirosol® TS and mirosol® WP, a black selective coating is directly applied as a lacquer to the anodized surface


Technical Information

solar absorption surfaces Reflection spectrum sunselect®, mirotherm® & mirosol®

Properties Parameter sunselect mirotherm Norm
Mechanical Alloy:


Hardness:
Cu-DHP*, Cu-OF*, Cu-HCP*
 

Half hard*
 
Al 1050* or purer
 

Hard*
*DIN EN 13599 /
*DIN EN 573-3

*DIN EN 1652 /
*DIN EN 485-2
         
Optical Solar absorption, αsol:
Thermal emission, ε100 °C:
Colour coordinate a* (D 65):
Colour coordinate b* (D 65):		 0.95 ± 0.02
0.05 ± 0.02
0 to +14
-35 to -10
0.95 ± 0.01
0.05 ± 0.02
-12 to 0
-25 to 0
 

DIN 5033
DIN 5033
         
Physical Heat conductivity W/(m*K):
Specific weight, g/cm3:		 295 - 395
8.9
210 - 220
2.7		  
         
Dimensions Width in mm (inch):
Thickness in mm (inch):		 max. 1250 (49.21)
0.12 - 0.3 (.0047 - .012)*		 max. 1250 (49.21)
0.3 - 0.5 (.012 - .020)*		  
         
Delivery Coils or sheets with:
Innerdiameter
400 or 500 mm:		 Paper interleave or
protection foil

Paper interleave or
protection foil 

 
         
Aging test
Warranty		 Passed:
10 years:

ISO/CD 12592.2 Task X
 
         

    * = other thickness on request


Properties Parameter mirosol   Norm
Mechanical Alloy:
Hardness:		 Al 1050* or purer Hard*
  *DIN EN 573-3
*DIN EN 485-2
         
Optical Solar absorption, αsol:
Thermal emission, ε100 °C:
Colour coordinate a* (D 65):
Colour coordinate b* (D 65):		 0.90 ± 0.02
0.15 ± 0.02
  -12 to +2
-25 to 0
 

DIN 5033
DIN 5033
         
Physical Heat conductivity W/(m*K):
Specific weight, g/cm3:		 210 - 220
2.7
   
         
Dimensions Width in mm (inch):
Thickness in mm (inch):		 max. 1250 (49.21)
0.3 - 0.5 (.012 - .020)*		    
         
Delivery Coils or sheets with:
Innerdiameter
400 or 500 mm:		 Paper interleave or
protection foil

   
         
Aging test
Warranty		 Passed:
10 years:
  ISO/CD 12592.2 Task