These collectors are used for heating water. The hot water is stored and can be used for heating and preparing hot tap water and for heating the space.

Tests in practice [Erhorn-Kluttig et al., 2011] show that thermal solar energy systems have been developed as far as possible. They work well and cost between €3,700 and €5,680. These prices include storage and a control system for a comprehensive package that covers approximately 60% of the heat required by a four-person household. [Erhorn-Kluttig et al., 2011]

Literature

• Erhorn-Kluttig H., Jank R., Schrempf L., Dütz A., Rumpel F., Schrade J., Erhorn H., Beier C., Sager C. & Schmidt D.; Energetische Quartiersplanung – Methoden – Technologien – Praxisbeispiele; Fraunhofer IRB Verlag, Stuttgart, 2011