22-EN
INSTALLATION and OPERATION MANUAL
Technical parameters of Evacuated-tube collector VTC
VTC 15
VTC 20
VTC 30
Number of evacuated tubes
Pcs.
15
20
30
Height Н
mm
1980
1980
1980
Width L / Thickness D
mm
1190/125
1570/125
2300/125
Overall surface
m
2
2.36
3.11
4.55
Aperture surface
m
2
1.412
1.882
2.824
Absorber surface
m
2
1.215
1.62
2.429
Heat carrier fluid
PG 50%
(Freezing point: -34°С)
Heat carrier volume
L
0.94
1.24
1.82
Heat carrier flow rate
L/m
2
h
60÷80
60÷80
60÷80
Evacuated tube material
Heat-tempered borosilicate glass
SU-SS-ALN/AIN
Collector frame material / type
Aluminium / Adjustable
Plastic parts material
UV resistant plastic RAL 9005
Heat carrier pipes material / type
Copper /Heat pipe TU 1
Coating of absorber
Selective Coating
Manifold unit - box material/insulation
E
Anodized aluminum / Polyurethane
foam 30 mm
Efficiency ƞ0а in relation to aperture
%
66
Thermal loss coefficient а
1а
W/(m
2
K)
1.500
Thermal loss coefficient а
2а
W/(m
2
K
2
)
0.020
Kθ,trans /Kθ,trans (50°), in relation to aperture
0,92/1,43
Stagnation temperature t
stg
°С
221
Max. operating temperature
°С
180
Test pressure/ Max. operating pressure
Bar
25/12
Pressure loss Δр
Pa
150
200
600
Weight kg
43
57
86
Evacuated tube diameter/length
K, Ø,mm
Ø 58/1800
Distance b/n evacuated tubes
J, mm
75
Heat carrier pipes diameter/number
Ø, mm/ Бр.
14/15
14/20
14/30
Collecting pipe material/diameter
Ø, mm
Copper / Ø 22
Heat carrier Inlet/outlet diameter
N,O
Ø, mm
Ø 22
Temperature sensor sleeve
S, Ø, mm
8
Evacuated tube holder
P, pcs.
15
20
30
Number of outlets
2
Maximum number of collectors in one array /
installed surface
Pcs./m
2
8/20.14
7/22.85
6/28.2
Standard: EN 12975: 2006-06
Certificate: CEN - Keymark No 011-7S1807-R