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蒸汽渦輪發動機

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一現代發電廠蒸汽機轉子。蒸汽通過右側上游的小葉片後既膨脹,流向下游的大葉片。

蒸汽渦輪引擎Steam turbine)是一種擷取(將水加熱後形成的)蒸汽動能轉換為渦輪轉動之動能的機械。相較於原由詹姆斯·瓦特發明的單級往復式蒸汽機,渦輪蒸汽機大幅提高了熱效率,更接近熱力學中理想的可逆過程,並能提供更大的功率,至今它幾乎取代了往復式蒸汽機。使用渦輪蒸汽機发电的电厂叫做热电厂,其特別適用於火力發電核能發電,世界上大約80%的電能是渦輪蒸汽機所產生。船舶领域主要用于大型舰船。

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蒸汽渦輪發動機
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