Operating tips - Solar power system
13
Connecting the collectors to one another
The diagram below is an example of how the collectors can be connected to one another.
However, the actual connection may be different depending on structural conditions. A maximum of 8 collectors may
be connected in a series! If a collector panel is made up of more than 8 collectors, the panel must be connected
several times in parallel.
Mass flow rate
To ensure the performance of the collector, a specific flow ra te of 30 l/m˛h is to be selected up to a collector panel
size of approx. 25m .
Pipe diameters
Dimensions table with a specific flow rate of 30 l/m h
Collector panel size [m ]
approx. 5
approx. 7.5
approx. 12.5
approx. 25
Pipe diameter / copper [mm]
10 - 12
15
18
22
Pipe diameter / stainless steel
corrugated pipe
DN16
DN20
Pressure loss collector for anti-freeze / water mixture (40% / 60%)
at a thermal conducting temperature of 50° C.
Pressure loss curve:
U
p = 0,0001x + 0,0031x
Mass flow rate [kg/h]
0
50
100
150
200
250
300
350
400
450
500
0
2
4
6
9
12
16
20
25
30
36
Supply
Return
2
2
2
Pressure [mbar]
2
