clownfish
大粒星
 
文章: 2681
來自: Malaysia " Penang "
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 于 2002-12-04 09:34    
i think you have to make clear what you want ....流量 ...扬程.. or both .....??
if 流量 no nedd to consider just as iczfirz san suggestion sepearte it,
sure you get double 流量 and safe.
12345678 wrote
上水管管径不变的话, 用第2种方法流量增加不大，吾知系吾系
if 上水管管径不变的话 , 流量 maybe 1.5 , but 扬程 should increase .
if 上水管管径变的话 , 流量 near to 2.0 but 扬程 maybe not increase .
so , back to the question , what you want ..???
above just personal feeling .係純粹靠估 
ps : after you try , pls post out your testing result .
thank you
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