Beretta SCF-20N, Руководство по установке

Страница: 4 / 12

4
Technical specifications
DESCRIPTION
Total area 2,02 m
2
Exposed area 1,81 m
2
Effective absorption area 1,77 m
2
Connections (copper pipe) 4 x Ø 22 mm
Empty weight 30 kg
Liquid content 1,5 l
Recommended flow rate for each line per m
2
of collector 30 l/(h x m
2
)
Minimum flow rate for each line per m
2
of collector 20 l/(h x m
2
)
Maximum flow rate for each line per m
2
of collector 200 l/(h x m
2
)
Glass thickness 3,2 mm
Absorption (
α
)
~ 95 %
Emissions (
ε
) ~ 5 %
Maximum permitted pressure 10 bar
Stagnation temperature 198 °C
Maximum number of collectors in a line 6 n°
Efficiency curve
0,75
0,80
0,65
0,70
0,55
0,60
0,45
0,50
0,40
0,35
0 0,01 0,02 0,03 0,04 0,05 0,06 0,07 0,08
Tm[m 2 K/W]
*
Optical efficien-
cy of absorber
(
ηο
)
Thermal dispersion factor of
absorber
a1 W/(m
2
K) a2 W/(m
2
K
2
)
0,764 4,33 0,0069
Tested according to EN 12975, referred to a 33.3% wa-
ter-glycol mix, flow rate of 75 l/h, and irradiation G =
800W/m
2
.
Tm = (Coll._inlet _temp.+Coll._outlet_temp.)/2
T*m =
(Tm-T_ambient)/G
WIND AND SNOW LOADS ON COLLECTORS
Installation
height above
ground
Wind speed
Mass in kg to secure collector
against lifting by wind
Load on roof from wind, snow, and
collector weight
At angle of
45
° At angle of
20
° At angle of
45
° At angle of
20
°
0 - 8 m 100 km/h 80 kg 40 kg 320 kg 345 kg
8 - 20 m 130 km/h 180 kg 90 kg 470 kg 430 kg
20 - 100 m 150 km/h 280 kg 150 kg 624 kg 525 kg
Maximum permitted load from wind and snow (including combined loads) on surface of collector: 1500 Pa (175
km/h).
TECHNICAL SPECIFICATIONS