solar collector- CE certificate

1. blue sputtering collector efficiency stands on 95% of original value after 30 years.
2. high efficiency and long life .
Collector

Item

Absorber type
Bluetec sputtering coating flat plate
Absorber header

Absorber riser
2 pcs red copper tube (T2) DN22*0.8mm(oxy-acetylene welding)
8 pcs red copper tube (T2) DN10*0.5mm(oxy-acetylene welding)
Seal rubber
EPDM
Frame components
6063T5 aluminum alloy (1.1mm-1.5mm thickness)
Glass cover
Patterned tempered glass (3.2mm thickness)
Transmission
92%-93.5%
Insulation layer
High performance glass fiber wool (30mm-40mm thickness,thermal conductivity:0.038W/m*K)
Back cover
Patterned aluminum plate (0.5mm thickness)
Absorption efficiency
97%
Momentary efficiency
87%
Heat losses
3.2W/M
2
­­­­­­*K
Features
Integral laser welding, smooth surface, merge into building style
Quantity of Collectors


Drainback systems use water as the heat-transfer fluid in the collector loop. A pump circulates the water through the solar water heater. When the pump is turned off, the solar water heater drains of water, which ensures freeze protection and also allows the system to turn off if the water in the storage tank becomes too hot. A problem with drainback systems is that the solar water heater installation and plumbing must be carefully positioned to allow complete drainage. The pump must also have sufficient head pressure to pump the water up to the collector each time the pump starts. Electricity usage is therefore slightly higher than a sealed closed or open loop.