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Total Dynamic Head Question?
I've got a centrifugal pump I'm looking at adding another discharge line to. I'm trying to determine if the pump has the ability to pump to both the original destination and this new discharge line. I am having a problem developing the system curve after the T in the discharge line. Do I add the TDH's together in the discharge lines to get my system requirement?
1 Answer
- oil field trashLv 71 decade agoFavorite Answer
I assume you are going to have some type of valve or other device to control the flow between the two different paths.
You should start at the final destination in each path and calculate the pressure drop back to the T for the required flow rate. You will probably end up with two different pressure drops. The higher one will set the required pressure at the T and the pump discharge. You will have to have some type of device to adjust the pressure drop in the other system if you wish to control the flow rate. Otherwise it will take more of the flow than you may want.
Ideally you would have a control device in each leg with a pump that can produce sufficient head to handle this arrangement.