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TECHNICAL PASSPORT. INSTALLATION and OPERATION MANUAL
TECHNICAL PASSPORT. INSTALLATION and OPERATION MANUAL
TECHNICAL PASSPORT. INSTALLATION and OPERATION MANUAL
TECHNICAL PASSPORT. INSTALLATION and OPERATION MANUAL
Table 7. Technical parameters of VTC type Evacuated-tube collector
Model
VTC 15
VTC 20
VTC 30
Number of evacuated tubes
pcs.
15
20
30
Height H
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/m2h
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
Anodized aluminum / Polyurethane
foam 30 mm
Efficiency ƞ
0a
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 Ø, mm/mm
58/1800
Distance b/n evacuated tubes
mm
75
Heat carrier pipes diameter/number Ø, mm/pcs.
14/15
14/20
14/30
Collecting pipe material/diameter Ø, mm
Copper/ 22
Heat carrier Inlet/outlet diameter Ø, mm
22
Temperature sensor sleeve Ø, mm
8
Evacuated tube holder
pcs.
15
20
30
Number of outlets
2
Standards and Certificates
EN 12975: 2006-06 / CEN - Keymark
No 011-7S1807-R
