5
GENERAL INFORMATION
Technical specifications
DESCRIPTION
CSV 25 R
CSV 35 R
Total area
2,77
3,91
m
2
Exposed area
2,40
3,43
m
2
Effective absorption area
2,69
3,84
m
2
Water connections
threaded on Ø 18 pipes
mm
Empty weight
52
74
kg
Liquid content
2,05
2,90
l
Recommended flow rate per m
2
of panel
30
l/(h x
m
2
)
Absorption (
α
)
> 94
%
Emissions (
ε
)
< 7
%
Maximum permitted pressure
10
bar
Stagnation temperature
268
°C
Maximum number of collectors connectable in series
6
n°
Efficiency parameters
Description
Absorber surface area
Open surface area
U/M
Optical efficiency (
ηο
) (*)
0,627
0,70
-
Thermal dispersion factor (a1) (*)
1,027
1,15
W/(m
2
K)
Thermal dispersion temperature dependence factor
(a2) (*)
0,010
0,011
W/(m
2
K
2
)
Description
U/M
IAM T (50°) (*)
1,07
-
IAM L (50°) (*)
0,954
-
Efficiency (
η
col) (**)
64
%
(*)
Tested according to EN 12975, referred to a 33.3% water-
glycol mix, flow rate of 170 l/h (
CSV 25 R
) - 240 l/h (
CSV 25
R
), 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
2
referred to the exposed area.
Efficiency curve referred to exposed area
1,0
0,8
0,6
0,4
0,2
0
0
0,02
0,04
0,06
0,08
0,10
Tm* [m
2
KW
-1
]
9
Minimum recommended slope is 15° (to ensure efficient self-cleaning and minimise snow pressure).
Installations in locations liable to frequent snow and hail, and installations on flat roofs in locations subject to strong winds
are not recommended (see "Static load" on page 11).
3
TECHNICAL SPECIFICATIONS
