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遇到如下问题不知该如何计算
" `) m7 }, h4 g) L请达人指教, f w7 J4 T4 u1 j% f! @
have some requests more about needle valves :8 ?4 _9 |- X5 J4 ?1 u
7 f7 \. O o) t2 C2 J' b. c1 – 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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/ q ~3 n1 t u0 v2 – what is the flow rate for a hole diameter of 6.8mm with a pressure of 4.2 bars7 J8 u8 X; D8 e% C
what is the flow rate for a hole diameter of 8mm with a pressure of 4.2 bars; D6 c; G9 A" e/ B$ v
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1.压力为4.2BAR，CV值是2500L/H的情况下，孔径是多少。% z5 g( @6 b# N( ~$ |: w
$ ~! ?( u+ R" T7 S2．压力为4.2BAR，孔径为6.8MM，CV值是多少/ x4 l1 |: e& u2 K7 a# D) N
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压力为4.2BAR，孔径为8MM，CV值是多少
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$ V5 K/ f" R. Y3 \+ _& {[ 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