Design and recommendations for decentralized solar district heating systems in France

The development of solar district heating is experiencing a booming. In some case the space available for the integration of solar panels is limited and the use of decentralized systems is necessary. For decentralized solar district heating systems different hydraulic schemes at the substation level, with or without local use of solar energy, is possible. The present paper detailed an advanced study on decentralized solar district heating system using dynamic simulation software. Initially different hydraulic schemes of substations are studied, and then integrated in a complete district heating including 12 substations. All these configurations are compared and some recommendations are done for designing decentralized solar district heating systems.