| 摘要 |
Arrangement for district heating network consisting of a heat source 1, a heat exchanger 2, a pump 3 and a district heating network 4. The pump 3 generates a pressure which is adequate to compensate for pressure losses in the district heating network so that the remotest part of the network receives sufficient pressure. A number of subscriber centres 5, 6, 7 etc. are connected to the district heating network 4. Each subscriber centre comprises a heat exchanger 10, the primary side of which is connected to the district heating network 4 via a regulating valve 15. The secondary side of the heat exchanger 10 is connected to radiators 11 etc. and heating medium is driven by a circulation pump 12. A temperature regulator 14 controls the regulating valve 15 so that the necessary heat energy is taken up in the heat exchanger 10. According to the invention, a turbine 21 is connected on the primary side of the subscriber centre. The turbine 21 is connected to a generator 22 so as to generate electrical energy to drive the regulator 14 and the circulation pump 12. In this way, the subscriber centre is independent of the general electrical network and continues to function even in the event of electricity failure. <IMAGE> |
