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SOLAR THERMAL
EN12975 Test Report
DURABILITY, RELIABILITY AND THERMAL
PERFORMANCE OF A SOLAR COLLECTOR
Absorber
· Material Copper
· Joint absorber-risers ultrasonic welded
· Thickness 0.15mm
· Absorptance 95%
· Emittance 11%
· Heat Transfer fluid content 1.8litres
· Flow pattern parallel
· Dimension absorber tubes 10 x 0.5mm
· No. of absorber tubes 8
· Distance between absorber tubes 119mm
· Dimension o the header 22 x 0.6mm
· No. of connections 4
· Realisation of connections 22mm copper tube
Thermal Insulation
Limitations
· Stagnation Temperature - 181°C (determined by test laboratory)
· Max. operation pressure 12 bar
· Allowed heat transfer fluid water + glycol
· Nominal Flow rate per collector 80kg/h
Internal Pressure for Absorber
Lead through and boundary conditions according to EN 12975-2:2006
BACKSIDE
SIDEWARDS
Material
Fibre Glass
Fibre Glass
Thermal Conductivity
0.052 W/(mk)
0.052 W/(mk)
Heat Capacity
1.5 KJ (kgK)
1.5 KJ (kgK)
Density
24 kg/m3
24 kg/m3
Thickness
50mm
25mm
MAX. OPERATING PRESSURE (BAR)
TEST PRESSURE (BAR)
TEST DURATION (MIN)
12
18
30
High Temperature Resistance
Lead through and boundary conditions according to EN 12975-2:2006
TEST DURATION (MIN)
MEAN IRRADIANCE (W/M²)
MEAN AMBIENT TEMPERATURE (°C)
100
1014
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