Solar Flat Plate CollectorauroTHERM classic VFK 135/2
The solar collector of the auroSTEP plus drain-back systems.
- Collect the sun's free energy
- Dedicated to drain-back solar systems auroSTEP plus
- Arrangement according to context, number according to needs
- Sturdy construction for long-lasting performance and efficiency
The solar thermal flat plate collector auroTHERM classic VFK 135 is dedicated to auroSTEP plus drain-back system for domestic hot water production. Drain-back technology has the advantage of providing unbeatable resistance during excessively sunny or cold periods, preventing any stress on the solar collector and increasing its lifespan. Depending on the region and the level of sunlight, it can cover 70% or more of the heat needed to heat domestic hot water for free. Its sleek and flat design with the stable structural glass allows 91 % of solar energy to pass through, while the side insulation ensures reliable heat transfer. These solar flat plate collectors can be installed vertically or horizontally to meet your specific needs, mounted on or integrated into the roof, on a sloped surface or on a terrace – always with dedicated and reliable frames or fixing brackets.
Ideal for:
- Heating
- Hot water
Technical data table overline
Technical data table headline
auroTHERM classic |
VFK 135/2 VD |
| Collector Minimum Yield | Collector Minimum Yield | 525 kWh/m²a |
|---|---|---|
| Aperture Collector Surface Area | Aperture Collector Surface Area | 2,35 m² |
| Gross Collector Surface Area | Gross Collector Surface Area | 2,51 m² |
| Collector Standby Temperature | Collector Standby Temperature | 210 °C |
| Collector Efficiency η₀ | Collector Efficiency η₀ | 73,6 % |
| Collector Transmission Figure | Collector Transmission Figure | 91 % |
| Collector Absorption Figure | Collector Absorption Figure | 95 % |
| Collector Emission Figure | Collector Emission Figure | 5 % |
| Collector Heat Transmission Coefficient 1 | Collector Heat Transmission Coefficient 1 | 3,643 W/m²K |
| Collector Heat Transmission Coefficient 2 | Collector Heat Transmission Coefficient 2 | 0,016 W/m²K² |