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遇到如下问题不知该如何计算
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x3 s7 B, C/ s8 X/ l+ hhave some requests more about needle valves :: m7 k" f! m0 m N# P( u; b
2 T& e8 W5 N1 @; _/ N! Y' T g8 W. g) W1 – What is the hole diameter the needle valves needs for a flow rate of 2500 litres/hour with a pressure of 4.2 bars.$ r8 p9 f$ i3 J8 s& l C0 x
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2 – what is the flow rate for a hole diameter of 6.8mm with a pressure of 4.2 bars5 t0 Q" p- r3 X: h
what is the flow rate for a hole diameter of 8mm with a pressure of 4.2 bars0 F1 k( [% R! S
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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: a, g- q: w7 r3 Z
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压力为4.2BAR,孔径为8MM,CV值是多少4 y4 `% ]. M/ W/ b" S% ~
. n" N' n; }$ A; T[ 本帖最后由 userkypdy 于 2007-3-20 19:52 编辑 ] |
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