emmeti Arcobaleno SXI Manuel D'installation Et D'utilisation page 42

6. COMMISSIONING
Fluid flow rate
For fields of collectors of up to 25 m
Piping size
Piping size table
No. of SXI solar collectors
Pipe diameter (copper)
Pipe diameter (steel)
Pressure drop (for an Arcobaleno SXI solar collector)
Curve referring to a mixture of 60 % water and 40 % glycol at a temperature of 50 °C.
60,0
55,0
50,0
45,0
40,0
35,0
30,0
25,0
20,0
15,0
10,0
5,0
0,0
0 50 100
Example:
1 (one) Arcobaleno SXI collector: at a flow rate of 150 kg/h corresponds to a pressure drop
3 (three) Arcobaleno SXI collectors: at a flow rate of 450 kg/h corresponds to a pressure drop
42
2
, the recommended flow rate is at least 30 kg/h every square metre of collector surface area.
up to 3 between 4 to 6
DN 16 DN 18
3/8" 1/2"
150 200 250 300
Flow rate portata (kg/h)
between 7 to 12 between 13 to 18
DN 22 DN 28
3/4" 1"
350 400 450 500
∆p
= 8 mbar.
1
∆p ∆p
= 3 x
n
550
= 3 x 45 mbar = 135 mbar
1
GB GB