I’m stuck while writing my equipment paper; please give me some advice
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Excuse me, expert: how can the mass flow rate of a pump be converted into a volume flow rate in the absence of density, given the head and the inlet and outlet pressures?
This post was last edited by Benpeng Guo Jibo45 on 2017-10-19 09:13. Hahaha, writing a thesis is really important; to get some advice from me, it seems you’ll have to treat me to a big meal. Given the pressure at the pump’s inlet and outlet, it is possible to calculate the working pressure of the pump, which is the outlet pressure minus the inlet pressure (also known as the head pressure). Using the equation P = density * g * h, where g is 9.8 and h represents the head height. The density can be calculated so easily. Once the density is known, and the mass flow rate is also known, then the volume flow rate can be determined as well
How naive – using Archimedes’ principle for calculations; that applies to stationary conditions. At the pump outlet, there is flow, so the Bernoulli equation should be used, but the necessary parameters are not available
Can mass flow rate and volume flow rate be converted without knowing the density?
I wonder if density, mass flow rate, and volume flow rate can be converted into one another
How is the mass flow rate determined? Density is easy to sample and test
Hahaha, it looks pretty sophisticated. The dynamic pressure in Bernoulli’s equation is essentially a complement to the static pressure given by ρgh. If you use this formula, there’s no flow rate either.