Stock Photo - 04 July 2022, Berlin: A cameraman films part of the high-temperature heat pump system at the ""topping-out ceremony"" for new high-temperature heat pump in the Vattenfall refrigeration plant. The pump utilizes the surplus waste heat generated in the cooling center there, raises it to a higher temperature level and feeds it into the Berlin city heating network. Photo: Monika Skolimowska/dpa. - Berlin/Berlin/Germany

Stock Photo: 04 July 2022, Berlin: A cameraman films part of the high-temperature heat pump system at the ""topping-out ceremony"" for new high-temperature heat pump in the.

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