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In questi giorni i condizionatori girano a pieno regime. Con grave danno per l’ambiente. Un’alternativa però c’è: un impianto che preleva l’acqua dei laghi in profondità e permette di raffreddare le case con una bassissima produzione di CO2. A Zugo se ne sta costruendo uno con un investimento di 100 milioni di franchi, la ventinovesima attiva in Svizzera.
TG/fran
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