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抽水馬達進水量計算

Sep 13th 2013, 23:18

小弟在工廠從事總務工作，由於工廠停車場地勢較為低漥每逢大雨就會淹水，因此我們計畫在停車場最低漥處打造一座陰井，並且放入軸流式的抽水馬達，但是主管要我計算陰井開口面積需要多大才能符合抽水機需求?
1.抽水馬達規格為5Hp軸流式馬達4組，每分鐘最大抽水量為1600L，排水管徑為4inch

2.陰井大小長2.5m寬1.2m高1.5m

3停車場每小時最大雨量累積量12.4t/平方公尺

4.雨量計算標準為每小時150mm計算

5.停車場面積為4990平方公尺

求:陰井開口需多大進水量才能滿足4台抽水機需求?

我們現在的設計是4組馬達搭配一組陰井，請問是否可行?或是有其他更好建議?歡迎指教!

謝謝

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