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遇到如下问题不知该如何计算6 E. t y* X3 p( s! ]
请达人指教% G3 r0 b3 r8 }0 Z; z
have some requests more about needle valves :
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1 – What is the hole diameter the needle valves needs for a flow rate of 2500 litres/hour with a pressure of 4.2 bars.
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2 – what is the flow rate for a hole diameter of 6.8mm with a pressure of 4.2 bars/ |. x3 M4 E5 k& ~. W0 A! Q
what is the flow rate for a hole diameter of 8mm with a pressure of 4.2 bars
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+ e7 l, S D5 P) Z& \, A1.压力为4.2BAR，CV值是2500L/H的情况下，孔径是多少。
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" q" b) b4 y4 n2．压力为4.2BAR，孔径为6.8MM，CV值是多少* c+ b# T% ?5 a2 i1 e/ i+ J* F h9 i
) x& `5 g0 V9 l& U! v4 [$ c. z8 p 压力为4.2BAR，孔径为8MM，CV值是多少
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[ 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