A solar thermal system utilizes solar energy to produce heat, offering an eco-friendly approach to generating hot water or supporting heating systems.
Operation:
This system comprises solar thermal panels installed on rooftops, absorbing sunlight to generate heat. Unlike photovoltaic panels that generate electricity, solar thermal panels deliver heat.
Applications:
- Warmwasserbereitung: Einfache Systeme dienen der Bereitstellung von Warmwasser und können etwa die Hälfte des Bedarfs decken.
- Heizungsunterstützung: Die erzeugte Wärme kann auch zur Heizungsunterstützung genutzt werden, wobei sie bis zu einem Drittel des Heizbedarfs abdecken kann.
Scales for a single-family home:
- Hot water only:
- Collector size : 3 to 6m2
- Storage capacity : 250 to 350 Liters
- Energy savings : approximately 350 kWh per m2 of collector
- For hot water and heating:
- Collector size : 9 to 20 m2
- Storage capacity : 500 to 1 500 Litesr
- Energy savings : approximately 250 kWh per m2 of collector
Suitable roofs: Unshaded south-facing roofs are optimal, though southeast and southwest orientations are also effective.
A solar thermal installation presents an efficient means of harnessing solar energy at no cost, all while preserving the environment.