Vacuum Tube
Water Heating Panels |
Number
of tubes
(all tubes Φ58mm *1800mm) |
Collector Gross Area
(m2) |
Collector Absorber Area
(m2) |
Panel Dimensions
(W x L mm) |
Daily Output
(litres) at 50C |
Annual Output* (kwh) |
|
SCM18-58/1800 |
18 |
3.17 |
1.67 |
1586 x 2000 |
135-185 |
1845 |
|
SCM24-58/1800 |
24 |
4.13 |
2.23 |
2066 x 2000 |
180-250 |
2404 |
|
SCM30-58/1800 |
30 |
5.09 |
2.79 |
2546 x 2000 |
225-315 |
2963 |
*Results from testing at
the Institute Für Solarenergieforschung GmbH in Germany based on irradience
of 1011kWh/m2
Vacuum Tube Specifications
|
Length: |
1800mm |
|
Outer tube diameter
|
58mm |
|
Inner tube diameter
|
47mm |
|
Glass thickness |
1.6mm |
|
Thermal expansion |
3.3x10-6 |
|
Material
|
Borosilicate Glass 3.3 |
|
Absorptive coating
|
SS-Al/N-Cu |
|
Absorption coefficient |
>93% |
|
Emission coefficient
|
<6% |
|
Vacuum P |
<5x10-3 Pa |
|
Wind resistance
|
30m/s |
|
Freezing resistance
|
-35 C |
|
Stagnation temperature |
>220 C |
|
Net weight
|
2.47kg |
| Heating capacity per tube
|
approx 8 litres of water to 50C per
day |
|