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遇到如下问题不知该如何计算8 {( \% X8 C* ^ ?
请达人指教
1 {3 |. p, y1 r: @# l) d) q8 C$ zhave some requests more about needle valves :
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8 U! O5 P( [. B; \1 N$ p& M1 – 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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# t; G! m1 Z' D9 N2 – what is the flow rate for a hole diameter of 6.8mm with a pressure of 4.2 bars
* Q: |$ d. ], k! Y, } 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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( n( H! B, K q* \2 p& V2.压力为4.2BAR,孔径为6.8MM,CV值是多少% c1 r2 M2 W' l, j. A) f8 \
; N" X0 p# c0 X! f 压力为4.2BAR,孔径为8MM,CV值是多少0 N: z2 i3 p8 @: H: v9 a& o
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[ 本帖最后由 userkypdy 于 2007-3-20 19:52 编辑 ] |
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