負圧が遠心ポンプのキャビテーション余裕に与える影響
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負圧が遠心ポンプのキャビテーション余裕に与える影響
媒体の飽和蒸気圧、液面高さを見る
ポンプのキャビテーション余裕には影響しないが、装置のキャビテーション余裕には影響し、具体的には設置状況や配管状況次第である
NPSHaは配管によって決まり、NPSHrは水ポンプ固有の特性であり、設計に関連し、入口の負圧とは関係ありません
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