A question about self-priming flow
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A constant-pressure tank contains 98% sulfuric acid. The vertical distance from the liquid surface to the outlet pipe at the bottom is 10 m. The density of sulfuric acid is 1.84 g/cm3, and the diameter of the outlet pipe is DN250. What is the flow rate per hour? (The liquid level in the tank can be considered constant during calculation.) Thank you!
Where are the large shrimps? It will take up a little of your time, please help.
It’s complicated to calculate accurately, so I’ll use a simple formula here to give you an approximate estimate: Assume that the outlet pipe leads into a device at atmospheric pressure, with no valves in between or all valves open. The flow velocity can be approximated as 1 m/s (in reality this value isn’t achievable; it’s just used for rough calculations), and the friction losses along the pipe can be ignored. Using the formula for determining the pipe diameter, d=18.8×(Q/v)^(1/2), it’s possible to calculate the volumetric flow rate. Based on the values you’ve provided, the result is 181 cubic units. For reference, those who can calculate it accurately please share it as well, so we can learn from each other*.