Vaillant Solar hot water System Manual page 9

Technical data of the tube collectors
Appliance designation
Surface area (gross, aperture/net)
Height
Width
Depth
Weight
Collector capacity
Copper pipe connection, flat-face
Insulation: high vacuum
Maximum operating pressure
Pure silver mirror, degree of reflection
Absorber emission
Absorber absorption
Solar sensor sleeve
CE label
Shutdown temperature (according to prEN 12975-2,
c < 1 m/s) in the glass tube
Shutdown temperature (according to prEN 12975-2,
c < 1 m/s) at the collector connection
Efficiency (according to EN 12975)
0
Efficiency coefficient k
1
Efficiency coefficient k
2
Table 4.1 Technical data tube collector auroTHERM exclusive
[%] 1,0
0,9
0,8
0,7
0,6
0,5
0,4
0,3
0,2
0,1
0
0 20 40 60 80
1000 W/m 2 Insolation
800 W/m 2 Insolation
300 W/m 2 Insolation
Fig. 4.4 Efficiency of the auroTHERM exclusive according to
DIN 4757/4
Manual - Solar hot water systems
100 120 140 160 180 200 220 240
Temperature difference (collektor/ambient) [K]
auroTHERM exclusive
Description of the components 4
Units auroTHERM exclusive VTK
275
m 2 0.68 / 0.41
mm 1695
mm 440
mm 100
kg 10.3
l 1.6
Thread 3/4"
-6
bar 10
bar 6
% 94 1
% 5 2
% 95 1.0
mm 6
0036
°C 250
°C 180
% 78 3%
W/(m 2 •K) 1.09 0.2
W/(m 2 •K 2 ) 0.01 0.002
40
30
20
10
0
0 50
Fig. 4.5 Pressure loss of the auroTHERM exclusive collector
auroTHERM exclusive VTK
550
1.28 / 0.82
1695
790
100
20
3.56
3/4"
-6
10
6
94 1
5 2
95 1.0
6
0036
250
180
78 3%
1.09 0.2
0.01 0.002
100 150 200 250
Volume flow [l/h]
auroTHERM
exclusive
300
9