How to understand static pressure energy?
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The last edit to this post was made by TH373637 on 2011-11-6 at 08:32. Before opening the outlet valve of the centrifugal pump, can the operation of the pump after it is started be considered as static pressure energy?''
Stagnation pressure: There is a certain stagnation pressure at any point within a stationary fluid. At any point within a flowing fluid, there is also a certain static pressure. If a hole is made in a pipe with liquid flowing inside it and connected to a vertical glass tube, the liquid will rise inside the glass tube; the height to which the liquid rises represents the static pressure of the flowing fluid at that cross-section. When a flowing fluid passes through a certain cross-section, since the fluid at that point has a certain pressure, work must be done on the fluid to overcome this pressure in order to push it into the system. Therefore, fluid passing through a certain cross-section can enter the system only if it carries energy equivalent to the required work. This form of energy possessed by a fluid is known as static pressure energy or flow work. Therefore, the static pressure energy of a pump after it has started operating remains the same, whether the pump is in operation or not. This refers to the energy and capacity that the pump has for transporting liquid, that is, the head
Static pressure energy refers to the energy possessed by a fluid due to a difference in liquid levels
It can be understood that way, but it cannot be implemented in that manner; static pressure has no power source, whereas the outlet of a centrifugal pump does have a power source