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Le Ferrovie federali, allo scopo d'economizzare sul consistente costo del riscaldamento degli scambi, necessario in inverno per evitare che i meccanismi siano bloccati dal ghiaccio, stanno provando una soluzione alternativa a gas ed elettricità.
Nella stazione di Eschenbach, nel canton Lucerna, si sta infatti facendo ricorso a una pompa di calore. Realizzare l'impianto è costato 450'000 franchi, onere in parte assunto dall'Ufficio federale dei trasporti. Se i risultati saranno quelli attesi, il risparmio sarà però del 30%, rispetto ai metodi tradizionali. Non poca cosa se si pensa ai tre milioni spesi stagionalmente all'uopo.
ATS/dg
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