Collector vacuTube is a product, in which modern construction of heatpipe has been applied.
This solution enables heat exchange without direct contact with medium. The heat is received by evaporating alcohol mixture, flowing up and giving up the heat in heat exchanger. Then it is condensed and comes back down the collector.
Main advantages of vacuTube collector:
- minimal heat losses due to application of vacuum as thermal insulation,
- high efficiency at low external temperatures,
- copper strip absorber, ultrasonic welded with highly selective layer,
- pipes made of hardened borosilicate glass, vacuum closed with special metal alloy by thermocompression,
- distributor boxes: made of extruded aluminum, furnace painted, distributor pipe made of copper,
- warranty 5 years
Assembly:
- angle of inclination 15 - 90º,
- special designed assembly sets enabling quick and easy assembly of collectors on each type of roof and as a free standing structure on the ground.
Within 24 hours we will send you results, selection suggestions and simulations of possible financial and ecological effects.
Technical specifications
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|
vacuTube HP 65/20 |
vacuTube HP 65/30 |
|
Dimensions |
1992x1450x165 mm |
1992x2153x165 mm |
|
Number of pipes |
20 |
30 |
|
Gross surface |
2,9 m2 |
4,29m2 |
|
Aperture surface |
2,1 m2 |
3,21 m2 |
|
Absorber surface |
2,0 m2 |
2,97 m2 |
|
Absorption coefficient |
95% |
|
|
Emission coefficient |
5% |
|
|
Linear loss coefficient |
a1=1,16 W/m2K |
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|
Nonlinear loss coefficient |
a2=0,0060 W/m2K2 |
|
|
Optical efficiency |
n0=80,0% |
|
|
Optical efficiency* |
n0,05=67,00% |
|
|
Maximum temperature in no-load state |
240oC |
|
|
Maximum temperature in no-load state |
290oC |
|
|
Maximum working pressure |
6 bar |
|
|
Weight without medium |
50 kg |
87 kg |
|
Liquid volume |
0,9 l. |
1,30 l. |
*Efficiency calculated at insolation 1000 W/m2 (800 W/m2) and temperature differ
