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遇到如下问题不知该如何计算
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J6 I1 G( ^5 h: u# k' fhave some requests more about needle valves :' a0 x( X% {7 h/ j
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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
" F2 D& y+ \4 V; E8 V 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。
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2．压力为4.2BAR，孔径为6.8MM，CV值是多少
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0 b0 ~$ V$ n1 a2 }) w7 l 压力为4.2BAR，孔径为8MM，CV值是多少. u4 A- B, P" r; B3 ]) j8 L
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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