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运行了77年的德国埃得（Eder）大坝2座水电厂中的1座作了技术改造，在赫姆福特（Hemfurth）Ⅰ电厂安装2台新型混流式水轮机组（代替原来的6台机组），使电厂年发电量增至53GWh（以前2个电厂年发电量总和仅45GWh）。已经关闭赫姆福特Ⅱ电厂，一些环境指标给技术改造方案的设计者提出了特别挑战。
One of the two hydropower plants in Germany’s 77-year-old Eder Dam was rebuilt and two new Francis turbines were installed at Hemfurth I (replacing the original six units ) To increase the plant’s annual power generation to 53GWh (the sum of the annual power generation of the two power plants was only 45GWh in the past). The Helmut II power plant has been closed and some of the environmental indicators pose a particular challenge to designers of technological transformation programs.