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遇到如下问题不知该如何计算
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have some requests more about needle valves :
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& `: l# p3 r4 W: S& L+ B1 – What is the hole diameter the needle valves needs for a flow rate of 2500 litres/hour with a pressure of 4.2 bars.& R/ v6 B: ~5 p( G
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8 f. j( E. L1 W+ R% G8 c+ e2 – what is the flow rate for a hole diameter of 6.8mm with a pressure of 4.2 bars+ ]6 s1 R. H, q7 \ C' z
what is the flow rate for a hole diameter of 8mm with a pressure of 4.2 bars* u7 z, O# Q: j2 c! G( }8 B
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1.压力为4.2BAR，CV值是2500L/H的情况下，孔径是多少。
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2．压力为4.2BAR，孔径为6.8MM，CV值是多少6 o. f5 b1 n8 m R. a
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压力为4.2BAR，孔径为8MM，CV值是多少' b" w6 ^; m. x' z3 e+ B3 O Q" V' I
2 G! n* K. Y2 A' }9 c! ]# [[ 本帖最后由 userkypdy 于 2007-3-20 19:52 编辑 ] |
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发表于 2006-4-25 17:47:12