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3 TECHNICAL SPECIFICATIONS
Technical specifications
DESCRIPTION
Total area
Exposed area
Effective absorption area
Connections (M) - (F)
Empty weight
Liquid content
Recommended flow rate for each line per m
Minimum flow rate for each line per m
Maximum flow rate for each line per m
Glass thickness
Thickness of rock wool insulation
Absorption (α)
Emissions (ε)
Maximum permitted pressure
Stagnation temperature
Maximum number of collectors in a line
Efficiency parameters
Description
Optical efficiency (ηο) (*)
Thermal dispersion factor (a1) (*)
Thermal dispersion temperature dependence factor
(a2) (*)
Description
IAM (50°) (*)
Efficiency (ηcol) (**)
(*) Tested according to EN 12975, referred to a 33.3% water-
glycol mix, flow rate of 160 l/h, and irradiation G = 800W/
m
.
2
Tm = (Coll._inlet _temp.+Coll._outlet_temp.)/2
T*m = (Tm-T_ambient)/G
(**) Calculated with a temperature difference of 40K between
the solar collector and the surrounding air, and with total
solar radiation of 1000 W/m
WIND AND SNOW LOADS ON COLLECTORS
Installation height
Wind speed
above ground
0 - 8 m
8 - 20 m
20 - 100 m
Maximum permitted load from wind and snow (including combined loads) on surface of collector: 1500 Pa (175 km/h).
of collector
2
of collector
2
of collector
2
0,96
61
referred to the exposed area.
2
Mass in kg to secure collector against
At angle of 45°
100 km/h
80 kg
130 km/h
180 kg
150 km/h
280 kg
Absorber surface
Open surface area Gross surface area
area
0,787
4,1
0,0084
Efficiency curve (referred to absorber surface area)
U/M
-
0,80
%
0,75
0,70
0,65
0,60
0,55
0,50
0,45
0,40
0,35
0
0,01 0,02 0,03 0,04 0,05 0,06 0,07 0,08
lifting by wind
At angle of 20°
40 kg
90 kg
150 kg
4
2,30
2,16
2,15
1"
40,0
1,6
30
12
60
3,2
40
95
4
10
197
6
0,784
0,736
4,08
3,84
0,0084
0,0079
*
Tm[m
K/W]
2
Load on roof from wind, snow, and
collector weight
At angle of 45°
320 kg
470 kg
624 kg
m
2
m
2
m
2
mm
kg
l
l/(h x m
)
2
l/(h x m
)
2
l/(h x m
)
2
mm
mm
%
%
bar
°C
n°
U/M
-
W/(m
K)
2
W/(m
K
)
2
2
At angle of 20°
345 kg
430 kg
525 kg
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