Solar Vacuum Tube CollectorauroTHERM exclusiv

Powerful solar tube collectors for maximum solar yields.

Vacuum tube collectors for pressurised solar systems
Maximum solar yield even on small or shaded roof areas
Robust, vacuum-tight double-glass construction for long service life

Maximum performance with every ray of sunshine: Our auroTHERM exclusiv solar tube collectors make particularly efficient use of the sun’s energy. By positioning the vacuum tubes over a ceramic‑coated CPC mirror, they achieve high solar yields even in weak sunlight. To make the most of your roof space, they are available in widths of 140 cm and 70 cm. The auroTHERM exclusiv collectors are certified with the European quality seal 'Solar KEYMARK' and eligible for funding. Their excellent performance, even in low sunlight, makes them ideal for solar‑assisted heating systems or combined solar systems for domestic hot water and heating.

Ideal for:

Heating
Hot water

Technical data table overline

Technical data table headline

auroTHERM exclusiv
VTK 570/2	VTK 1140/2

Solar Collector

Collector Minimum Yield	Collector Minimum Yield	525 kWh/m²a	525 kWh/m²a
Aperture Collector Surface Area	Aperture Collector Surface Area	1 m²	2 m²
Gross Collector Surface Area	Gross Collector Surface Area	1,16 m²	2,3 m²
Collector Standby Temperature	Collector Standby Temperature	301 °C	301 °C
Collector Efficiency η₀	Collector Efficiency η₀	55,5 %	56 %
Collector Transmission Figure	Collector Transmission Figure	98 %	98 %
Collector Absorption Figure	Collector Absorption Figure	94 %	94 %
Collector Emission Figure	Collector Emission Figure	6 %	6 %
Collector Heat Transmission Coefficient 1	Collector Heat Transmission Coefficient 1	0,646 W/m²K	0,651 W/m²K
Collector Heat Transmission Coefficient 2	Collector Heat Transmission Coefficient 2	0,004 W/m²K²	0,004 W/m²K²
Collector Radiation Angle Correction	Collector Radiation Angle Correction	85 %	85 %
Collector Heat Capacity	Collector Heat Capacity	7,91 kJ/m²·K	7,98 kJ/m²·K

Operation Fluids

Content Collector	Content Collector	0,9 l	1,6 l

Connections

Connection Dimension Solar (Flow, Return)	Connection Dimension Solar (Flow, Return)	Ø 15 mm	Ø 15 mm
Connection Dimension Solar (Sensor)	Connection Dimension Solar (Sensor)	Ø 6 mm	Ø 6 mm

Dimensions

Height / Width / Depth	Height / Width / Depth	1.652 mm / 702 mm / 111 mm	1.652 mm / 1.392 mm / 111 mm
Weight	Weight	19 kg	34 kg

Limitations

Operating Pressure Solar (max)	Operating Pressure Solar (max)	10 bar	10 bar
Wind Load (max)	Wind Load (max)	2,4 kN/m²	2,4 kN/m²
Snow Load (max, standard)	Snow Load (max, standard)	3,35 kN/m²	3,35 kN/m²
On-Roof Installation Angle (min - max)	On-Roof Installation Angle (min - max)	15 - 75°	15 - 75°
Flat Roof Installation Angle (min)	Flat Roof Installation Angle (min)	30°	30°
Flat Roof Installation Angle (medium)	Flat Roof Installation Angle (medium)	45°	45°
Flat Roof Installation Angle (max)	Flat Roof Installation Angle (max)	60°	60°
Quantity Tubes	Quantity Tubes	6 pcs	12 pcs