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Heating with geothermal systems 185

Fig. 5.4 Typical house in Chaudes-Aigues hot water district heating network [4].

spring, the Abrial, was used exclusively to supply a communal laundry room (lavoir)
which is still in place (Fig. 5.6).
This pattern of usage continued for many centuries. However, in 2009 the town
council decided that the district heating system would be taken out of service in order
to supply hot water to a proposed new, large thermal spa that would cater to tourists;
see Fig. 5.7. Only those houses fortunate enough to be situated over a private spring
were able to continue to heat their homes from geothermal water. However, the church
continues to be heated in the winter by the waters from the Par Spring [5].

Fig. 5.5 Par Spring, Chaudes-Aigues, France, hottest spring in Europe at 82 C [5].