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遇到如下问题不知该如何计算* V! w# I* f4 ~7 x2 F
请达人指教& U* \5 p- K- i- U8 L' _8 r
have some requests more about needle valves :& K) z& I0 m2 C% Y
/ u9 M! k; P" }4 T& d1 – 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. F" b5 n; W/ A
what is the flow rate for a hole diameter of 8mm with a pressure of 4.2 bars
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1.压力为4.2BAR，CV值是2500L/H的情况下，孔径是多少。1 p4 [+ u0 ~5 }; v% ~ B* h( J; i
$ T: E4 |% p, _, ]$ q# N2．压力为4.2BAR，孔径为6.8MM，CV值是多少& G! L% M% N8 I) E3 M
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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