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遇到如下问题不知该如何计算
- J5 N9 A1 I* u8 b% d: J请达人指教
& D# X& B3 C# }* p/ t5 ~0 C5 M Vhave 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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4 O, T3 a. c/ }3 U% f2 – what is the flow rate for a hole diameter of 6.8mm with a pressure of 4.2 bars; \9 L: {7 g1 Q. m- n; [' A: K) O# F+ n
what is the flow rate for a hole diameter of 8mm with a pressure of 4.2 bars9 q$ U( N9 T6 Y0 }) g/ \
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/ f7 j( q3 M0 Y8 W1.压力为4.2BAR，CV值是2500L/H的情况下，孔径是多少。1 \1 g- d! H) I4 P" c. b# q
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2．压力为4.2BAR，孔径为6.8MM，CV值是多少
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+ g: f4 {# g. B& y 压力为4.2BAR，孔径为8MM，CV值是多少
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4 i& K9 w7 K: }' h' `5 {) b8 _[ 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