閥門流量計算方法介紹(doc 18頁)

閥門流量計算方法介紹內容提要：
如何使用流量係數：
How to use Cv
閥門流量係數(Cv)是表示閥門通過流體能力的數值。Cv越大，在給定壓降下閥門能夠通過的流體就越多。Cv值1表示當通過壓降為1 PSI時，閥門每分鍾流過1加侖15oC的水。Cv值350表示當通過壓降為1 PSI時，閥門每分鍾流過350加侖15oC的水。
Valve coefficient (Cv) is a number which represents a valve's ability to pass flow. The bigger the Cv, the more flow a valve can pass with a given pressure drop. A Cv of 1 means a valve will pass 1 gallon per minute (gpm) of 60oF water with a pressure drop (dp) of 1 PSI across the valve. A Cv of 350 means a valve will pass 350 gpm of 60oF water with a dp of 1 PSI.

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