Regarding the backpressure issue
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I have a few questions for the seniors. 1. What pressure does the back pressure on the pump refer to? 2. Is the “pressure” by which we say a pump pressures a fluid the same as the fluid’s “static pressure energy”? :funk:
In simple terms, back pressure refers to the outlet pressure； Applied pressure and static pressure are two different things. Applied pressure involves converting mechanical work into kinetic energy, whereas static pressure is the energy that arises in a fluid due to a height difference, that is, it is generated by gravity
The definition of static pressure energy upstairs is incorrect. The driving force for fluid flow comes from static pressure energy (pressure difference); potential energy (height difference) can be converted into static pressure energy, but it is not static pressure energy itself. The original poster had better take a look at Bernoulli’s equation first.