| Title | Integrated District Heating System for the San Cataldo Area (Pisa, Italy) |
|---|---|
| Authors | Marco Conti, Gastone Ghelardoni & Carlo Piemonte |
| Year | 1999 |
| Conference | European Geothermal Conference |
| Keywords | District heating, heat pumps, cogeneration |
| Abstract | Ages, which is the Company in charge for the natural gas distribution in the town of Pisa and surroundings municipalities, is interested in co-operating with Enel for the S.Cataldo project. Enel shall be responsible for the drilling of the production and reinjection geothermal wells and shall supply the thermal demand of a large research centre, belonging to CNR (National Research Council), by means of a direct utilization (heat exchanger) of the geothermal fluid wellhead. The temperature of the geothermal fluid downstream the CNR plant is still high enough for a further utilization of the fluid itself and consequently Ages shall receive the fluid from Enel for feeding a district heating system with the geothermal heat, by means of large heat pumps. The system is completed with a cogeneration plant, which shall supply the electricity required for feeding the needs of the heat pumps and of the CNR research centre; the cogeneration plant shall integrate the heat extracted from the geothermal source and delivered to the distribution system and, in summer, will also give a contribution to the cooling load of the research centre by the utilization of absorption units. |